Biology
1. The natural place of an organism or community is known as
A. Niche
B. Biome
C. Habitat
D. Ecosystem
2. Which is the renewable exhaustible natural energy resource?
A.Coal
B. Petroleum
C.Kerosene
D. Biomass
3. According to Shelford’s Law of Tolerance, the organisms wide environmental
factor tolerance limit show
A.Narrow distribution with low population size
B. Wide distribution with high population size
C. Narrow distribution with high population size
D. Wide distribution with low population size
4. Plants growing under direct sunlight are known as
A.Heliophytes
B. Sciophytes
C. Psamophytes
D. Dicots
5. Plants growing under shade are known as
A.Psamophytes
B.Sciophytes
C. Heliophytes
D. Monocots
6. An orchid living on a tree exhibits
A. Predator
B. Mutualism
C. Commensalism
D. Parasitism
7. Which statement is correct with respect to the food chain?
A.Every component of the food chain forms a trophic level
B. Inter-relation between different food chains is known as a food web
C. All the chains formed by nutritional relations is used to understand energy flow.
D. All of the above
8. The process of vernalization is practised in
A. Cold countries
B. Hot countries
C. Only in sub-tropical countries
D. Only in tropical countries.
9. Which of the following requires maximum energy?
A. Secondary consumer
B. Decomposer
C. Primary consumer
D. Primary producer.
10. The bottom area where production is less than respiration in a pond ecosystem is
termed as
A.Profundal zone
B. Tidal zone
C. Benthic zone
D. Limnetic zone
11. Which is not the characteristic of ‘pisces’ selected species?
A.Reproduce quickly
B. Parental care
C. A low survival rate of progenies
D. Produce a large number of progenies
12. Which is not the characteristic of a population?
A.Natality
B.Mortality
C Stratification
D.Sex ratio
13. Lincoln index measures
A.Population mortality rate
B. Population natality rate
C. Population size
D Population density
14. Allelopathy refers to
A.Inhibition of growth of one species by another by the production of toxins
B.Inhibition of sporulation of pathogen by the host
C. Altering the reproductive cycle of one organism by another
D. Inhibition of growth of one species by another by preventing reproduction
15. The ratio between energy flow at different points in a food chain is known as
A. Ecological capacity
B. Ecological efficiency
C. Ecological assimilation
D. Ecological potential
16. The ability of a population to increase under ideal environmental conditions is
called
A.Natality
B. Carrying capacity
C. Biotic potential
D. Absolute natality
17. In an ecosystem, the energy flow is always
A. Always unidirectional
B. Always bidirectional
C. In any direction
D. Always down directional
18 A person who has had a renal transplant should regulate the intake of ______
A carbohydrates
B proteins
C fats
D vitamins
19. In cases of muscle fatigue, which of the Vitamin should be taken?
AA
BD
CE
DK
20 Which Vitamin in large amounts harms the bones?
A. A
B. B
C. C
D. D
(21) A child has presented with growth retardation, inability to walk and bruises all
over the body. Which of the following nutrients should be recommended as a
supplement to the diet?
A Milk
B Egg yolk
C Citrus fruits
D Pulses
22) The hairs on the skin erect when temperature falls. Give reason: A. The thickened
fur coat act as an insulator. B. It is a behavioral change. C It is due to subcutaneous
fat. D. Cold makes the hair stiff
23. The general molecular formula of carbohydrate is. A) CH 3O b. CHO c. (CH2O)2
d. CH4O
24. The part of skeleton functioning in the upper arm is a. Humerus b. Uterus c.
Pelvic d. Metamorphoic
25. The stage the first symptom of malaria is see A) triphozoite B) Mesozite c)
sporozoites d. Kaposite
26. The vector of riverblindness A Tse Tse fly B. Blackfly c. Housefly d. Butterfly
27. The breakdown of food into small particle is called A assimilation b digestion c
egestion d ingestion
28. The part of teeth in children is A premolar b molar c canine d incissor
29. The study of fossil record is A palaleontology B. Geology c. Morphology d
commensalism
30. The protoplams is the living structure consisting A nucleus b cytoplasm c.
Cytoplasm nucleus and cell membrane d. Nucleus and cytoplasm
31. The basic unit of life is A) cell b) tissue c) organ d) system
32. The onion bulb is found in the A. Tissue b) organ c) system d) cell
33. Which of the following insects are social insects
A.Butterflie B.Wasps C. Ant d all of the above
34. The type of muscle found in heart is a) cardiac b. Smooth c. Involuntary d. Muscle
35. The functional unit of the excretory system is a. Nephron b. Urinary tubules c.
Bowman capsule d. Loop
36 Parthenogenesis is for the member of a) queen b) king c) drone d) worker
37. Nuptial flight is found in all insect except A. Mosquito b butterfly c Ant d.Warsp
38. Aerchametious tissue is use for A hydrophyte b. Halophyte c xerophyte d.
Helophyte
39. Pectin and lignin are found in the.……. Part A) cell wall b. Cell membrane c
chloroplast d. Mitochondrion
40. The functional unity of hereditary is a allele b. Gene c phenotype d. Genotype.
