Biology Practical objectives questions

1. What is reproduction? (a) The process of growing new tissues (b) The ability of organisms to produce new offspring (c)
The elimination of waste from the body (d) The process of obtaining food
2. Which of the following is a type of asexual reproduction? (a)Fertilization (b) Budding (c) Pollination (d) Meiosis
3. Binary fission occurs in which organism? (a) Amoeba (b) Hydra (c) Fungi (d) Tulip
4. In which type of asexual reproduction does a parent organism split into two or more equal parts? (a) Budding (b) Spore
formation (c) Binary fission (d) Fragmentation
5. Which of the following organisms reproduces by budding?(a) Amoeba (b) Yeast (c) Spirogyra (d) Paramecium
6. Spore formation is a common form of reproduction in which of the following? (a) Mammals (b) Fungi (c) Birds (d)
Reptiles
7. Which method of asexual reproduction involves breaking into pieces and each part growing into a new organism? (a)
Spore formation (b) Binary fission (c) Fragmentation (d) Vegetative propagation
8. Vegetative propagation occurs in which of the following organisms? (a) Humans (b) Plants (c) Fungi (d) Bacteria
9. Which part of the plant is involved in vegetative propagation in Bryophyllum? (a) Stem (b) Leaf (c) Root (d) Flower
10. Which of the following is an example of a natural vegetative propagation method? (a) Grafting (b) Budding (c) Layering
(d) Stem tuber
11. Rhizomes are modified stems used for vegetative propagation in which plant? (a) Banana (b) Canna lily (c) Yam (d)
Pineapple
12. Which method of vegetative propagation involves underground swollen stems storing food reserves? (a) Stem tuber (b)
Rhizome (c) Bulb (d) Sucker
13. Suckers are commonly produced by which of the following plants? (a) Pineapple (b) Tomato (c) Mango (d) Rice
14. Bulbs are compressed underground buds used in propagation. Which plant uses bulbs? (a) Onion (b) Maize (c) Wheat
(d) Carrot
15. Which artificial method involves cutting and planting part of the stem? (a) Grafting (b) Budding (c) Layering (d) Cutting
16. Grafting is used primarily for which type of plant? (a) Fruit crops (b) Vegetables (c) Grains d) Legumes
17. Which method involves bending a branch to the ground for root formation? (a) Grafting (b) Marcotting (c) Layering (d)
Budding
18. Which of the following is an advantage of asexual reproduction? (a) Greater genetic variation (b) No need for
pollination agents (c) Dispersal of offspring (d) Evolution of new species
19. Which of the following is a disadvantage of asexual reproduction? (a) Rapid growth of offspring (b) Overcrowding and
competition (c) High adaptability (d) Genetic diversity
20. What is sexual reproduction? (a) Reproduction without gametes (b) Reproduction involving gamete fusion (c)
Reproduction by budding (d) Reproduction through binary fission
21. Which process leads to the fusion of male and female gametes? (a) Conjugation (b) Fertilization (c) Budding (d) Spore
formation
22. In spirogyra, the fusion of cytoplasm during conjugation forms which structure? (a) Spore (b) Zygote (c) Zygospore (d)
Conjugation tube
23. Fertilization in higher animals occurs when which two gametes fuse? (a) Egg and pollen (b) Egg and sperm (c) Sperm
and pollen (d) Egg and ovary
24. The male gamete in animals is called the _____. (a) Ovum (b) Zygote (c) Sperm (d) Egg
25. In flowering plants, where are male gametes produced? (a) Ovary (b) Petal (c) Anther (d) Root
26. Meiosis occurs during the formation of which cells in plants and animals? (a) Body cells (b) Gametes (c) Skin cells (d)
Stem cells
27. Which phase in meiosis involves chromosome visibility as long threads? (a) Metaphase (b) Prophase (c) Anaphase (d)
Telophase
28. Which stage in meiosis is characterized by the separation of homologous chromosomes? (a) Prophase (b) Metaphase
(c) Anaphase (d) Telophase
29. In meiosis, which phase involves the chromosomes being arranged at the equator? (a) Telophase (b) Prophase (c)
Metaphase (d) Anaphase
30. The result of meiosis is the formation of how many daughter cells? (a) One (b) Two (c) Four (d) Eight
31. What is the significance of meiosis? (a) Maintains diploid chromosome number in zygote (b) Produces identical
offspring (c) Increases chromosome number (d) Eliminates variation
32. Meiosis can result in genetic variation due to _____. (a) Random assortment of genes (b) Lack of chromosomal
changes (c) Equal division of cytoplasm (d) Homologous chromosomes
33. Which of the following organisms reproduces by conjugation? (a) Paramecium (b) Amoeba (c) Hydra (d) Euglena
34. In sexual reproduction, the female gamete is called the _____. (a) Zygote (b) Sperm (c) Ovum (d) Pollen grain
35. Which of the following is produced after the fusion of gametes? (a) Zygote (b) Spore (c) Gametophyte (d) Haploid cells
36. Which of the following is an example of sexual reproduction in plants? (a) Budding (b) Spore formation (c) Seed
production (d) Binary fission
37. A major advantage of sexual reproduction is _____. (a) No variation (b) Less time to produce offspring (c) Increased
genetic diversity (d) Lack of pollination
38. Which division of meiosis results in a reduction of chromosome number by half? (a) First meiotic division (b) Second
meiotic division (c) Anaphase (d) Telophase
39. In which phase of meiosis do homologous chromosomes undergo genetic exchange? (a) Prophase (b) Telophase (c)
Anaphase (d) Interphase
40. Which of the following is a diploid cell? (a) Zygote (b) Sperm (c) Ovum (d) Pollen grain
TRUE OR FALSE QUESTIONS
41. Meiosis occurs only during the formation of body cells. True / False
42. Binary fission is the same as spore formation. True / False
43. Marcotting is a natural method of vegetative propagation. True / False
44. Suckers are found only in animal species. True / False
45. Conjugation is a form of sexual reproduction. True / False
46. In meiosis, four daughter cells are formed, each containing half the chromosome number of the parent. True / False
47. Vegetative propagation does not require seeds. True / False
48. Layering is an artificial method of vegetative propagation. True / False
49. Fertilization is the fusion of two male gametes. True / False
50. Bulbs are used in vegetative propagation in onions. True / False

51. What is the function of the testes in the male reproductive system? (a) Production of ova (b) Production of sperm and
testosterone (c) Production of seminal fluid (d) Storage of urine

52. Which structure houses the testes in males? (a) Scrotum (b) Penis (c) Epididymis (d) Seminal vesicle

53. What is the primary function of the scrotum? (a) To produce sperm (b) To regulate the temperature of the testes (c)
To store urine (d) To secrete hormones

54. Where are sperm temporarily stored and matured? (a) Vas deferens (b) Epididymis (c) Urethra (d) Seminal vesicle

55. Which part of the male reproductive system serves as a passage for both urine and sperm? (a) Urethra (b) Vas
deferens (c) Seminal vesicle q(d) Penis

56. Which gland in the male reproductive system produces seminal fluid that nourishes sperm? (a) Cowper's gland (b)
Seminal vesicle (c) Prostate gland (d) Epididymis

57. What is the role of the prostate gland? (a) To produce sperm (b) To store urine (c) To secrete fluid that activates
sperm (d) To produce testosterone

58. What is semen composed of? (a) Only sperm (b) Seminal fluid only (c) Sperm and seminal fluid (d) Urine and sperm

59. What hormone is produced by the interstitial cells in the testes? (a) Oestrogen (b) Progesterone (c) Testosterone (d)
Luteinizing hormone

60. What is the function of male gametes (sperm)? (a) To nourish the embryo (b) To fertilize the female egg (c) To
produce testosterone (d) To secrete seminal fluid

61. What structure releases mature eggs in the female reproductive system? (a) Ovaries (b) Fallopian tubes (c) Uterus (d)
Cervix
62. What is the primary function of the Fallopian tubes? (a) To produce hormones (b) To transport eggs from the ovaries
to the uterus (c) To store sperm (d) To facilitate the fusion of sperm and egg

63. Where does fertilization typically take place in the female reproductive system? (a) Vagina (b) Uterus (c) Cervix (d)
Fallopian tubes

64. What is ovulation? (a) The release of sperm into the vagina (b) The release of an egg from the ovary (c) The
development of the zygote (d) The shedding of the uterine lining

65. At what age do women typically experience menopause? (a) 15-25 years (b) 25-35 years (c) 45-55 years (d) 60-70
years

66. Which structure provides nutrients for the embryo in the early stages of development? (a) Vagina (b) Fallopian tube (c)
Uterus (d) Cervix

67. What is the function of the cervix? (a) To produce eggs (b) To control the opening of the uterus (c) To store sperm (d)
To nourish the embryo

68. What part of the female reproductive system serves as the birth canal? (a) Uterus (b) Vagina (c) Cervix (d) Ovaries

69. What is the hymen? (a) A sac that stores sperm (b) A membrane that partially covers the vaginal opening (c) A part of
the uterus (d) A gland that secretes fluid during intercourse

70. Which part of the female reproductive system is responsible for sexual stimulation and arousal? (a) Labia majora (b)
Clitoris (c) Fallopian tube (d) Ovaries

71. Which organ in the female reproductive system is responsible for implantation of the zygote? (a) Ovaries (b)
Fallopian tube (c) Uterus (d) Cervix

72. What is the function of the vulva? (a) To protect the opening of the vagina (b) To produce eggs (c) To store sperm (d)
To produce hormones

73. Where are gametes produced in mammals? (a) Kidneys (b) Gonads (c) Bladder (d) Pancreas

74. What is the primary function of the ovaries? (a) To produce sperm (b) To release mature eggs and produce female
hormones (c) To store urine (d) To secrete seminal fluid

75. Which structure in the male reproductive system transports sperm from the epididymis to the urethra? (a) Vas
deferens (b) Scrotum (c) Urethra (d) Seminal vesicle

76. What is the function of the cowper's gland? (a) To produce sperm (b) To neutralize acidity in the urethra (c) To
produce testosterone (d) To fertilize eggs

77. Where is sperm produced? (a) Vas deferens (b) Testes (c) Seminal vesicle (d) Epididymis

78. What hormone controls the development of male secondary sexual characteristics? (a) Oestrogen (b) Progesterone
(c) Testosterone (d) Luteinizing hormone

79. Where does sperm mature? (a) Scrotum (b) Seminal vesicle (c) Epididymis (d) Urethra
80. What is semen composed of? (a) Sperm and seminal fluid (b) Sperm only (c) Seminal fluid only (d) Sperm and urine

81. Which hormone is primarily responsible for regulating the menstrual cycle in females? (a) Testosterone (b) Insulin (c)
Oestrogen (d) Adrenaline

82. At what stage of life do the ovaries stop releasing eggs? (a) Ovulation (b) Fertilization (c) Menopause (d) Puberty

83. What structure allows sperm to enter the female reproductive tract? (a) Urethra (b) Vagina (c) Fallopian tube (d)
Cervix

84. Where does implantation of the fertilized egg take place? (a) Fallopian tube (b) Uterus (c) Vagina (d) Ovary

85. The release of an egg from the ovary is called what? (a) Menstruation (b) Ovulation (c) Fertilization (d) Implantation

86. Which gland contributes to the formation of semen? (a) Prostate gland
(b) Thyroid gland (c) Pituitary gland (d) Pineal gland

87. Which part of the male reproductive system surrounds the urethra? (a) Testes (b) Vas deferens (c) Prostate gland (d)
Epididymis

88. What is the primary role of the uterus during pregnancy? (a) To produce eggs (b) To provide nutrients for the embryo
and fetus (c) To produce hormones (d) To store sperm

89. Which reproductive process forms gametes? (a) Mitosis (b) Meiosis (c) Fertilization (d) Implantation

90. What is the function of the labia majora in females? (a) To store eggs (b) To protect the external genital organs (c) To
produce hormones (d) To store sperm

91. Which female reproductive organ releases eggs during ovulation? (a) Uterus (b) Fallopian tube (c) Ovary (d) Vagina

92. Which male structure carries genetic information to the female egg? (a) Urethra (b) Sperm (c) Epididymis (d) Prostate
gland

93. What is the primary function of the female gametes? (a) To fertilize the male sperm (b) To carry genetic information
and develop into a new organism (c) To produce seminal fluid (d) To secrete hormone

94. Which part of the female reproductive system is responsible for the expulsion of the fetus during childbirth? (a)
Fallopian tube (b) Cervix (c) Vagina (d) Uterus

95. What is the main function of testosterone in males? (a) To regulate the menstrual cycle (b) To stimulate sperm
production and develop male characteristics (c) To produce seminal fluid (d) To nourish the embryo

96. Which organ in the male reproductive system produces sperm? (a) Prostate gland (b) Seminal vesicle (c) Testes (d)
Urethra

97. Which process involves the fusion of male and female gametes? (a) Ovulation (b) Fertilization (c) Implantation (d)
Menstruation

98. What is the main role of the uterus in reproduction? (a) To store eggs (b) To facilitate fertilization (c) To nourish and
house the developing fetus (d) To produce hormones
99. Which part of the female reproductive system leads from the cervix to the external environment? (a) Uterus (b)
Fallopian tube (c) Vagina (d) Ovaries

100. What is the fertilized egg called? (a) Embryo (b) Zygote (c) Fetus (d) Gamete

101. Which part of the nervous system controls voluntary actions? (a) Central Nervous System (CNS)
(b) Peripheral Nervous System (PNS) (c) Somatic Nervous System (d) Autonomic Nervous System
Answer: (a) Central Nervous System (CNS)
102. What is the main function of the cerebellum? (a) To control body temperature (b) To regulate
blood pressure (c) To coordinate muscle movements (d) To facilitate memory storage
Answer: (c) To coordinate muscle movements
103. Which nerve carries visual information from the eye to the brain? (a) Optic nerve (b)
Olfactory nerve (c) Vagus nerve (d) Trigeminal nerve
Answer: (a) Optic nerve
104. What is the term for the "gap" between two neurons? (a) Synapse (b) Dendrite (c) Axon (d)
Myelin sheath
Answer: (a) Synapse
105. Which part of the brain plays a crucial role in regulating emotions? (a) Cerebrum (b)
Cerebellum (c) Brainstem (d) Limbic system
Answer: (d) Limbic system
106. What is the function of the myelin sheath? (a) To transmit nerve impulses (b) To insulate
and protect nerve fibers (c) To produce neurotransmitters (d) To regulate blood flow
Answer: (b) To insulate and protect nerve fibers
107. Which of the following is NOT a function of the autonomic nervous system? (a) Regulating
heart rate (b) Controlling body temperature (c) Facilitating voluntary movements (d) Regulating
digestion
Answer: (c) Facilitating voluntary movements
108. What is the term for the process by which nerve impulses are transmitted from one neuron
to another? (a) Synaptic transmission (b) Neurotransmission (c) Action potential (d) Reflex arc
Answer: (a) Synaptic transmission
109. Which part of the brain connects the cerebrum to the spinal cord? (a) Brainstem (b)
Cerebellum (c) Limbic system (d) Corpus callosum
Answer: (a) Brainstem
110. What is the function of the dorsal root ganglion? (a) To transmit sensory information from
the spinal cord to the brain (b) To transmit motor signals from the brain to the muscles (c) To regulate
blood pressure (d) To facilitate memory storage
Answer: (a) To transmit sensory information from the spinal cord to the brain

111. Which of the following is a type of glial cell? (a) Astrocyte (b) Oligodendrocyte (c) Microglia (d)
All of the above

Answer: (d) All of the above

112. What is the term for the movement of ions across the neuronal membrane? (a) Action
potential (b) Synaptic transmission (c) Ion flux (d) Neurotransmission
Answer: (c) Ion flux
113. Which part of the brain regulates body temperature? (a) Hypothalamus (b) Thalamus (c)
Cerebellum (d) Brainstem
Answer: (a) Hypothalamus
114. What is the function of the ventricles in the brain? (a) To produce cerebrospinal fluid (b) To
regulate blood pressure (c) To facilitate memory storage (d) To transmit nerve impulses
Answer: (a) To produce cerebrospinal fluid
115. Which of the following is NOT a type of sensory receptor? (a) Mechanoreceptor (b)
Thermoreceptor (c) Chemoreceptor (d) Muscle spindle
Answer: (d) Muscle spindle
116. What is the term for the process by which the brain interprets sensory information? (a)
Perception (b) Sensation (c) Transmission (d) Integration
Answer: (a) Perception
117. Which part of the brain regulates appetite and hunger? (a) Hypothalamus (b) Thalamus (c)
Cerebellum (d) Brainstem
Answer: (a) Hypothalamus
118. What is the function of the meninges? (a) To protect the brain and spinal cord (b) To
regulate blood pressure (c) To facilitate memory storage (d) To transmit nerve impulses
Answer: (a) To protect the brain and spinal cord
119. Which of the following is a type of neurotransmitter? (a) Acetylcholine (b) Dopamine (c)
Serotonin (d) All of the above
120. Who is considered the father of genetics? (a) Gregor Mendel (b) Charles Darwin (c) James
Watson (d) Francis Crick
Answer: (a) Gregor Mendel
121. What is the term for the physical appearance of a trait? (a) Genotype (b) Phenotype (c)
Dominant (d) Recessive
Answer: (b) Phenotype
122. Which of the following is an example of a dominant trait? (a) Blue eyes (b) Brown eyes (c)
Freckles (d) Red hair
Answer: (b) Brown eyes
123. What is the term for the genetic makeup of an individual? (a) Genotype (b) Phenotype (c)
Chromosome (d) Gene
Answer: (a) Genotype
124. Which of the following is an example of a recessive trait? (a) Tall stature (b) Blue eyes (c)
Freckles (d) Red hair
Answer: (b) Blue eyes
125. What is the term for the process by which genetic information is passed from one
generation to the next? (a) Heredity (b) Genetics (c) Inheritance (d) Evolution
Answer: (c) Inheritance
126. Which of the following is an example of a genetic disorder? (a) Sickle cell anemia (b) Cystic
fibrosis (c) Huntington's disease (d) All of the above
Answer: (d) All of the above
127. What is the term for a gene that has different forms or variations? (a) Allele (b)
Chromosome (c) Gene (d) Trait
Answer: (a) Allele
128. Which of the following is an example of a polygenic trait? (a) Eye color (b) Hair color (c)
Height (d) All of the above
Answer: (d) All of the above
129. What is the term for the study of the structure, behavior, and evolution of chromosomes? (a)
Cytogenetics (b) Molecular biology (c) Genetic engineering (d) Genomics
Answer: (a) Cytogenetics
130. Which of the following types of genetic variation occurs when there is a change in the
number of chromosomes? (a) Mutation (b) Genetic drift (c) Gene flow (d) Chromosomal abnormality
 Answer: (d) Chromosomal abnormality
131. What is the term for the process by which genetic information is copied from one
generation of cells to the next? (a) Replication (b) Transcription (c) Translation (d) Mitosis
Answer: (a) Replication
132. Which of the following is an example of a genetic test used to diagnose genetic disorders?
(a) Karyotype (b) PCR (Polymerase Chain Reaction) (c) DNA sequencing (d) All of the above
Answer: (d) All of the above
133. What is the term for the process by which genetic information is used to create proteins? (a)
Transcription (b) Translation (c) Replication (d) Mutation
Answer: (b) Translation
134. Which of the following types of genetic variation occurs when there is a change in the DNA
sequence of a gene? (a) Mutation (b) Genetic drift (c) Gene flow (d) Chromosomal abnormality
Answer: (a) Mutation
135. What is the term for the study of the relationship between genes and behavior? (a)
Behavioral genetics (b) Molecular biology (c) Genetic engineering (d) Genomics
Answer: (a) Behavioral genetics\
136. Which of the following is an example of a genetic disorder caused by a chromosomal
abnormality? (a) Down syndrome (b) Cystic fibrosis (c) Sickle cell anemia (d) Huntington's disease
Answer: (a) Down syndrome
137. What is the term for the process by which genetic information is passed from one
generation to the next through the use of reproductive cells? (a) Heredity (b) Genetics (c) Inheritance
(d) Sexual reproduction
Answer: (d) Sexual reproduction
138. Which of the following types of genetic variation occurs when there is a change in the
frequency of a gene or genes in a population? (a) Mutation (b) Genetic drift (c) Gene flow (d) Natural
selection
Answer: (b) Genetic drift
139. What is the term for the study of the structure and function of genes and genomes? (a)
Genomics (b) Molecular biology (c) Genetic engineering (d) Cytogenetics
Answer: (a) Genomics
140. Which of the following is an example of a genetic disorder caused by a mutation in a single
gene? (a) Cystic fibrosis (b) Sickle cell anemia (c) Huntington's disease (d) All of the above
Answer: (d) All of the above
141. What is the term for the process by which genetic information is used to create proteins? (a)
Transcription (b) Translation (c) Replication (d) Mutation
Answer: (b) Translation
142. Which of the following types of genetic variation occurs when there is a change in the number of
chromosomes? (a) Mutation (b) Genetic drift (c) Gene flow (d) Chromosomal abnormality
Answer: (d) Chromosomal abnormality
143. What is the term for the study of the relationship between genes and the environment? (a)
Epigenetics(b) Behavioral genetics (c) Molecular biology (d) Genomics
Answer: (a) Epigenetics
144. Which of the following is an example of a genetic disorder caused by a chromosomal
abnormality? (a) Down syndrome (b) Cystic fibrosis (c) Sickle cell anemia (d) Huntington's disease
Answer: (a) Down syndrome
145. What is the term for the process by which genetic information is passed from one
generation to the next through the use of reproductive cells? (a) Heredity (b) Genetics (c) Inheritance
(d) Sexual reproduction
 Answer: (d) Sexual reproduction
146. Which of the following types of genetic variation occurs when there is a change in the frequency
of a gene or genes in a population (a) Mutation (b) Genetic drift (c) Gene flow (d) Natural selection
Answer: (b) Genetic drift
147. What is the term for the study of the structure and function of genes and genomes? (a)
Genomics (b) Molecular biology (c) Genetic engineering (d) Cytogenetics
Answer: (a) Genomics
148. Which of the following is an example of a genetic disorder caused by a mutation in a single gene?
(a) Cystic fibrosis (b) Sickle cell anemia (c) Huntington's disease (d) All of the above
Answer: (d) All of the above
149. What is the term for the process by which genetic information is used to create proteins? (a)
Transcription (b) Translation (c) Replication (d) Mutation
Answer: (b) Translation
150. Which sense organ is responsible for detecting light and color? (a) Eye (b) Ear (c) Nose (d)
Tongue
Answer: (a) Eye
151. What is the function of the retina in the eye? (a) To detect sound waves (b) To detect light and
color (c) To detect smell (d) To detect taste
Answer: (b) To detect light and color
152. Which part of the ear is responsible for maintaining balance? (a) Cochlea (b) Vestibule (c)
Semircular canals (d) Eardrum
Answer: (c) Semircular canals
153. What is the function of the olfactory receptors in the nose? (a) To detect light and color (b) To
detect sound waves (c) To detect smell (d) To detect taste
Answer: (c) To detect smell
154. Which sense organ is responsible for detecting taste? (a) Eye (b) Ear (c) Nose (d) Tongue
Answer: (d) Tongue

155. What is the function of the cornea in the eye? (a) To detect light and color (b) To focus light on
the retina (c) To protect the eye from injury (d) To produce tears

Answer: (b) To focus light on the retina

156. Which part of the ear is responsible for detecting sound waves? (a) Cochlea (b) Vestibule (c)
Semircular canals (d) Eardrum

Answer: (a) Cochlea

157. What is the function of the lens in the eye? (a) To detect light and color (b) To focus light on the
retina (c) To protect the eye from injury (d) To produce tears
Answer: (b) To focus light on the retina

158. Which sense organ is responsible for detecting touch and pressure? (a) Eye (b) Ear (c) Nose (d)
Skin

Answer: (d) Skin

159. What is the function of the auditory nerve in the ear? (a) To detect sound waves (b) To transmit
sound signals to the brain (c) To maintain balance (d) To detect smell
Answer: (b) To transmit sound signals to the brain

Questions 11-15
11. Which part of the eye is responsible for controlling the amount of light that enters the eye?
(a) Iris
(b) Pupil
(c) Lens
(d) Retina

Answer: (b) Pupil

12. What is the function of the eardrum in the ear?

(a) To detect sound waves
(b) To transmit sound signals to the brain
(c) To maintain balance
(d) To amplify sound waves

Answer: (d) To amplify sound waves

13. Which sense organ is responsible for detecting smell?

(a) Eye
(b) Ear
(c) Nose
(d) Tongue

Answer: (c) Nose

14. What is the function of the taste buds on the tongue?

(a) To detect light and color
(b) To detect sound waves
(c) To detect smell
(d) To detect taste

Answer: (d) To detect taste

15. Which part of the skin is responsible for detecting touch and pressure?
(a) Epidermis
(b) Dermis
(c) Hypodermis
(d) Meissner's corpuscles

Answer: (d) Meissner's corpuscles

Questions 16-20
16. What is the function of the optic nerve in the eye?
 (a) To detect light and color
(b) To transmit visual signals to the brain
(c) To maintain balance
(d) To detect smell

Answer: (b) To transmit visual signals to the brain

17. Which part of the ear is responsible for transmitting sound signals to the brain?
(a) Cochlea
(b) Vestibule
(c) Semircular canals
(d) Auditory nerve

Answer: (d) Auditory nerve

18. What is the function of the olfactory bulb in the nose?

(a) To detect light and color
(b) To detect sound waves
(c) To detect smell
(d) To transmit olfactory signals to the brain

Answer: (d) To transmit olfactory signals to the brain

19. Which sense organ is responsible for detecting changes in temperature?

(a) Eye
(b) Ear
(c) Nose
(d) Skin

Answer: (d) Skin

20. What is the function of the trigeminal nerve in the face?

(a) To detect light and color
(b) To detect sound waves
(c) To detect smell
(d) To transmit sensory signals from the face to the brain

Answer: (d) To transmit sensory signals from the face to the brain

1. Which part of the eye changes shape to focus on near or far objects?
(a) Cornea
(b) Iris
(c) Lens
(d) Retina

Answer: (c) Lens

2. What is the function of the eustachian tube in the ear?

 (a) To detect sound waves
(b) To maintain balance
(c) To regulate air pressure in the ear
(d) To transmit sound signals to the brain

Answer: (c) To regulate air pressure in the ear

3. Which type of sensory receptor is responsible for detecting stretch and tension in muscles?
(a) Mechanoreceptor
(b) Thermoreceptor
(c) Chemoreceptor
(d) Proprioceptor

Answer: (d) Proprioceptor

4. What is the function of the conjunctiva in the eye?

(a) To detect light and color
(b) To focus light on the retina
(c) To protect the eye from infection
(d) To produce tears

Answer: (c) To protect the eye from infection

5. Which part of the ear is responsible for detecting changes in acceleration and deceleration?
(a) Cochlea
(b) Vestibule
(c) Semircular canals
(d) Otolith organs

Answer: (d) Otolith organs

Questions 6-10
6. What is the function of the lacrimal gland in the eye?
(a) To detect light and color
(b) To focus light on the retina
(c) To produce tears
(d) To protect the eye from infection

Answer: (c) To produce tears

7. Which type of sensory receptor is responsible for detecting changes in temperature?

(a) Mechanoreceptor
(b) Thermoreceptor
(c) Chemoreceptor
(d) Proprioceptor

Answer: (b) Thermoreceptor

 8. What is the function of the stapes bone in the ear?
(a) To detect sound waves
(b) To transmit sound signals to the brain
(c) To regulate air pressure in the ear
(d) To amplify sound waves

Answer: (d) To amplify sound waves

9. Which part of the eye is responsible for controlling the amount of light that enters the eye?
(a) Iris
(b) Pupil
(c) Lens
(d) Retina

Answer: (b) Pupil

10. What is the function of the olfactory epithelium in the nose?

(a) To detect light and color
(b) To detect sound waves
(c) To detect smell
(d) To transmit olfactory signals to the brain

Answer: (c) To detect smell

Questions 11-15
11. Which type of sensory receptor is responsible for detecting changes in pressure and
vibration?
(a) Mechanoreceptor
(b) Thermoreceptor
(c) Chemoreceptor
(d) Proprioceptor

Answer: (a) Mechanoreceptor

12. What is the function of the ciliary muscles in the eye?

(a) To detect light and color
(b) To focus light on the retina
(c) To change the shape of the lens
(d) To regulate air pressure in the ear

Answer: (c) To change the shape of the lens

13. Which part of the ear is responsible for detecting sound waves?
(a) Cochlea
(b) Vestibule
(c) Semircular canals
(d) Tympanic membrane
Answer: (d) Tympanic membrane

14. What is the function of the retina in the eye?

(a) To detect light and color
(b) To focus light on the retina
(c) To transmit visual signals to the brain
(d) To regulate air pressure in the ear

Answer: (c) To transmit visual signals to the brain

15. Which type of sensory receptor is responsible for detecting changes in chemicals in the air?
(a) Mechanoreceptor
(b) Thermoreceptor
(c) Chemoreceptor
(d) Proprioceptor

Answer: (c) Chemoreceptor

16. What is the function of the optic chiasm in the eye?

(a) To detect light and color
(b) To focus light on the retina
(c) To transmit visual signals to the brain
(d) To cross visual signals from one side of the brain to the other

Answer: (d) To cross visual signals from one side of the brain to the other

17. Which part of the ear is responsible for maintaining balance?

(a) Cochlea
(b) Vestibule
(c) Semircular canals
(d) Otolith organs

Answer: (b) Vestibule

18. What is the function of the conjunctival sac in the eye?

(a) To detect light and color
(b) To focus light on the retina
(c) To protect the eye from infection
(d) To produce tears

Answer: (c) To protect the eye from infection