M.C.KEJRIWAL F.M.
80
V I D Y A P E E T H
MOCK TEST 5 2023-24 TIME 2 hours
SUBJECT: BIOLOGY
(Science Paper-3)
CLASS: X
Answers to this Paper must be written on the paper provided separately.
You will not be allowed to write during first 15 minutes.
This time is to be spent in reading the question paper.
The time given at the head of this paper is the time allowed for writing the answers.
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Section A is compulsory. Attempt any four questions from Section B.
The intended marks for questions or parts of questions are given in brackets [ ].
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SECTION A (40 Marks)
(Attempt all questions from this Section)
Question 1
Select the correct answers to the questions from the given options. (Do not copy the question. Write the
correct answer only): [15]
(i) The chromatin material is made up of:
(a) DNA only (b) DNA and histones (c) Histones only (d) Nucleotides
(ii) Which one of the following is the phenotypic monohybrid ratio in F2 generation?
(a) 3:1 (b) 1:2:1 (c) 2:2 (d) 1:3
(iii) Absorption of water by the plant cells by surface attraction is called:
(a) Diffusion (b) Osmosis (c) Imbibition (d) Endosmosis
(iv) Guttation takes place through:
(a) Stomata (b) Lenticels (c) Lower epidermis of leaves (d) Hydathodes
(v) Which of the following hormones regulate stomatal closure?
(a) Auxins (b) GA (c) Cytokinins (d) ABA
(vi) Assertion (A): The sex of a child is determined by the mother.
Reason (R): The chromosome number of humans is 46.
(a) Both A and R are True (b) Both A and R are False (c) A is True and R is False (d) A is False and R is True
(vii) In humans urea is formed in:
(a) Ureter (b) Liver (c) Spleen (d) Kidney
(viii) Which of the following is absent in a neuron?
(a) Ribosome (b) Centrosome (c) Chromosome (d) Lysososme
(ix) The region in the eye where the rods and cones are located:
(a) Retina (b) Cornea (c) Choroid (d) Sclera
(x) The middle piece of sperm provides:
(a) Energy (b) Food (c) Gene (d) Chromosome
(xi) Exophthalmic goitre is caused due to the over activity of:
(a) Thymus (b) Thyroid (c) Pancreas (d) Adrenal
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This question paper consists of four printed pages Turn over.
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(xii) Which part of our ear is shaped like a snail shell?
(a) Semi-circular canal (b) Cochlea (c) Stapes (d) Eustachian tube
(xiii) Which of the following you might find in the middle ear?
P. Pinna and Auditory canal
Q. Ear ossicles
R. Cochlea
(a) Only P (b) Only Q (c) Only P and Q (d) Only P and R
(xiv) Which one of the following is non- biodegradable?
(a) DDT (b) Vegetable peel (c) Cardboard (d) Bark of trees
(xv) While watching a scary movie, sympathetic nervous system got stimulated and had shown the effect
on the following organs. Which of the effect is correct?
1. Heart: Accelerated heart beat
2. Lungs: Bronchi constricted
3. Pupil of the eye: constriction
4. Lacrimal gland: Stimulates secretion
(a) Only 1 (b) Only 3 (c) Both 1 and 4 (d) Only 4
Question 2
(i) Name the following: [5]
(a) Type of cell division that occurs during growth of shoots.
(b) Bone of ear ossicles that is attached to the tympanum.
(c) The fluid that fills up the median canal of the cochlea.
(d) Duct that leads to urethra from epididymis.
(e) The ground substance present in the chloroplast.
(ii) Arrange and rewrite the items in each group in the correct order so as to be in a logical sequence
beginning with the term that is underlined: [5]
(a) Receptor, CNS, stimulus, effector, response
(b) Tympanum, stapes, incus, malleus, oval window
(c) Interphase, prophase, telophase, cytokinesis, metaphase
(d) Ovulation, implantation, parturition, gestation, fertilization
(e) Thromboplastin, clot, thrombin, fibrinogen, prothrombin, fibrin
(iii) Fill in the blanks with suitable words: [5]
Heart beat occurs at two main phases (a) ___________ and (b) ____________. There are four valves in the
heart to regulate the (c) __________ flow of blood. Sharp closing of these valves produces the (d)
________________and (e) ______________ sounds.
(iv) Choose the odd one out from the following terms and name the category to which the others belong:
[5]
(a) Auxin, Insulin, ABA, Cytokinin
(b) Dura mater, Pia mater, Pons, Arachnoid
(c) Bowman’s capsule, Proximal convoluted tubule, Loop of Henle, Ureter
(d) Sneezing, Coughing, Yawning, Typing
(e) Renal artery, pulmonary artery, pulmonary vein, coronary artery
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(v) Match the items given in Column I with the most appropriate ones in Column II and rewrite the
correct matching pairs: [5]
Column A Column B
(a) Diapedesis (i) Neurotransmitter
(b) Loop of Henle (ii) Concave lens
(c) Acetylcholine (iii) White Blood Corpuscles
(d) Hypermetropia (iv) Nephron
(e) Euro Norm (v) Convex lens
(vi) Hormone
(vii) Control of automobile exhaust
SECTION B
(Attempt any four questions from this Section.)
Question 3
(i) Define semen. [1]
(ii) Give one difference between diabetes mellitus and diabetes insipidus. [2]
(iii) What is phototropism? Name the hormone responsible for it. [2]
(iv) State the law of dominance. [2]
(v) Study the diagram given below and answer the questions that follow: [3]
A B
(a) Identify the blood vessels A and B respectively.
(b) State the reason for the identification.
(c) Name the kind of blood that flows through them.
Question 4
(i) Expand the abbreviation- ABA. [1]
(ii) State two reasons for the increase of population in world. [2]
(iii) Ventricles have thicker walls than auricles. Why? [2]
(iv) We move our eyes from word to word as we read a line through a printed page. Why? [2]
(v) Study the diagram and answer the following questions: [3]
(a) Name the gland.
(b) Name the hormone secreted from it.
(c) State the major function of the hormone.
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Question 5
(i) Define: Diffusion. [1]
(ii) Why xerophytic plants have thick cuticle? [2]
(iii) State two functions of cerebrum. [2]
(iv) Which gland is known as master gland and why? [2]
(v) Draw a neat diagram of the neuron and label any four parts. [3]
Question 6
(i) Define: Photosynthesis. [1]
(ii) State difference between rods and cones. [2]
(iii) State two functions of amniotic fluid. [2]
(iv) An alcoholic person walks clumsily. Give reason. [2]
(v) Study the picture and answer the questions that follow: [3]
(a) What does the figure depict?
(b) Write two harmful effects of it.
(c) Write two ways to reduce the effect of it.
Question 7
(i) Define transpiration. [1]
(ii) State one function each of retina and choroid layer. [2]
(iii) What is the difference between neuron and nephron? [2]
(iv) Name the part of the ear concerned with: [2]
(a) Captures the sound waves (b) Amplifies the sound vibration
(v) Draw a labelled diagram of a malpighian capsule. [3]
Question 8
(i) State the function of ethylene. [1]
(ii) Some plants show wilting of their leaves at noon even when the soil is well watered. Give reason for the
same. [2]
(iii) Who is the Father of Genetics? What is the scientific name of pea plant? [2]
(iv) Give one example each of natural and conditioned reflex. [2]
(v) Study the diagram given below and answer the questions that follow: [3]
(a) Identify the reproductive cells A and B.
(b) Name the specific part of the reproductive system where the above cells A
are produced.
(c) Where in the female reproductive system do these cells unite?
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