ICSE Class 10 Biology Question Paper Solution 2017

Most of the students find ICSE Class 10 Biology Question Paper lengthy and therefore, they are not able to complete the ICSE Class 10 Biology question paper in the allocated time duration of 2 hours. The best way to overcome this time management problem is by solving the previous year Biology question papers. Here, we have provided the ICSE Class 10 Biology Question Paper 2017 along with the solutions. Students can also download the pdf of both question paper as well as ICSE Class 10 Biology Question Paper 2017 Solutions from the link provided below in the page. Apart from time management, students will also get to know how marks are awarded for writing answers in steps.

The ICSE Class 10 Biology 2017 exam was conducted on 5th April 2017. The exam started at 11 am and students were allotted 2 hours of time duration to finish the paper. Students can download the ICSE Class 10 Biology Question Paper Solution 2017 PDF from the link below.

ICSE Class 10 Biology (Paper 3) Question Paper 2017 With Solution

Question 1:

(a) Name the following:

(i) The process by which root hairs absorb water from the soil.

(ii) The organ which produces urea.

(iii) The kind of lens required to correct Myopia.

(iv) The pituitary hormone which stimulates contraction of uterus during child birth.

(v) The international health organization which educates people in accident prevention.

(b) Choose the correct answer from each of the four options given below:

(i) The prime source of chlorofluorocarbons is:

1. Vehicular emissions
2. Industrial effluents
3. Domestic sewage
4. Refrigeration equipments

(ii) Penicillin obtained from a fungus is:

1. Antibiotic
2. Antiseptic
3. Antibody
4. Antiserum

(iii) Marine fish when placed in tap water bursts because of:

1. Endosmosis
2. Exosmosis
3. Diffusion
4. Plasmolysis

(iv) Surgical method of sterilization in a woman involves cutting and tying of:

1. Ureter
2. Uterus
3. Urethra
4. Oviduct

(v) Synthesis phase in the cell cycle is called so, because of the synthesis of more:

1. RNA
2. RNA and proteins
3. DNA
4. Glucose

(c) The statements given below are incorrect. Rewrite the correct statement by changing the underlined words of the statements.

(i) The Graafian follicle, after ovulation turns into a hormone producing tissue called Corpus callosum.

(ii) Deafness is caused due to the rupturing of the Pinna.

(iii) Gyri and Sulci are the folds of Cerebellum.

(iv) Free movement of solutes in and out of the cell takes place across the cell membrane

(v) The solvent used to dissolve the chlorophyll pigments while testing a leaf for starch is Soda lime.

(d) Given below are sets of five terms each. Rewrite the terms in correct order in a logical sequence.

Example: Large intestine, Stomach, Mouth, Small intestine, Oesophagus.

Answer: Mouth Oesophagus Stomach Small intestine Large intestine.

(i) Fibrin, Platelets, Thromboplastin, Fibrinogen, Thrombin.

(ii) Cochlea, Malleus, Pinna, Stapes, Incus.

(iii) Receptor, Spinal cord, Effector, Motor neuron, Sensory neuron.

(iv) Uterus, Parturition, Fertilisation, Gestation, Implantation.

(v) Caterpillar, Snake, Owl, Frog, Green leaves.

(e) Choose the ODD one out of the following terms given and name the CATEGORY to which the others belong:

(i) Aqueous humour, Vitreous humour, Iris, Central canal

(ii) Formalin, Iodine, DDT, Lime

(iii) ACTH, TSH, ADH, FSH

(iv) Phosphate, RNA, Sugar, Nitrogenous base

(v) Bile, Urea, Uric acid, Ammonia

(f) Given below are groups of terms. In each group the first pair indicates the relationship between the two terms. Rewrite and complete the second pair on a similar basis.

Example: Oxygen : Inspiration : : Carbondioxide : Expiration

(i) Eye : Optic nerve : : Ear : ____________

(ii) Cytoplasm : Cytokinesis : : Nucleus : ____________

(iii) TT : Homozygous : : Tt : ____________

(iv) Foetus : Amnion : : Heart : ____________

(v) Adenine : Thymine : : Cytosine : ____________

(g) Match the items given in Column A with the most appropriate ones in Column B and rewrite the correct matching pairs.

(h) The diagram given below represents the location and structure of an endocrine gland. Study the same and answer the questions that follow:

(i) Name the endocrine gland shown in the diagram.

(ii) Name the secretion of the gland which regulates basal metabolism.

(iii) Name the mineral element required for the synthesis of the above mentioned hormone.

(iv) Name the disease caused due to under secretion of the above mentioned hormone in children.

(v) Name the disease caused due to hypersecretion of the above mentioned hormone.

Answer:

(a) Name the following:

(i) Endosmosis

(ii) Liver

(iii) Concave

(iv) Oxytocin

(v) Red Cross

(b) Choose the correct answer:

(i) D. Refrigeration equipments

(ii) A. Antibiotic

(iii) A. Endosmosis

(iv) D. Oviduct

(v) C. DNA

(c) Correct Statements:

(i) Corpus luteum

(ii) Ear drum

(iii) Cerebrum

(iv) Cell wall

(v) Methylated spirit / alcohol

(d) Terms in logical sequence:

(i) Platelets Thromboplastin Thrombin Fibrinogen Fibrin

(ii) Pinna Malleus Inus Stapes Cochlea

(iii) Receptor Sensory neuron Spinal cord Motor neuron Effector

(iv) Fertilisation Uterus Implantation Gestation Parturition

(v) Green leaves Caterpillar Frog Snake Owl

(e) Odd term and category:

(i) Odd term – Central Canal

Category – Parts of eye

(ii) Odd term – Iodine

Category – Disinfectants

(iii) Odd term – ADH

Category – Hormones of Anterior lobe of Pituitary gland

(iv) Odd term – RNA

Category – Parts of Nucleotide

(v) Odd term – Bile

Category – Nitrogenous wastes / Excretory substances

(f) Words of second pair:

(i) Auditory nerve

(ii) Karyokinesis

(iii) Heterozygous

(iv) Pericardium

(v) Guanine

(g) Matching pairs:

1. Sacculus — Static body balance

2. Birth rate — Natality

3. DNA and histones — Nucleosome

4. Euronorms — Vehicular standards

5. Diabetes mellitus — Hyperglycemia

(h) (i) Thyroid

(ii) Thyroxine

(iii) Iodine / I₂ / I

(iv) Cretinism

(v) Exophthalmic goitre

Question 2:

(a) Study the diagram given below which represents a stage during the mitotic cell division and answer the questions that follow:

(i) Identify the stage giving suitable reasons.

(ii) Name the parts numbered 1 and 2.

(iii) What is the technical term for the division of nucleus?

(iv) Mention the stage that comes before the stage shown in the diagram. Draw a neat labelled diagram of the stage mentioned.

(v) Which is the cell division that results in half the number of chromosomes in daughter cells?

(b) Differentiate between the following pairs on the basis of what is mentioned in brackets:

(i) Active Transport and Diffusion [significance in plants]

(ii) Demography and Population density [Definition]

(iii) Antibiotic and Antibody [Source]

(iv) Renal cortex and Renal medulla [Parts of the nephrons present]

(v) NADP and ATP [Expand the abbreviation]

Answer:

(a) (i) Telophase. Nuclear membrane reappears / Spindle fibres disappears / Cytokinesis begins / Chromatids become thin / daughter nuclei are formed. (Any one)

(ii)

1 – Chromosome

2 – Nuclear membrane

(iii) Karyokinesis

(iv) Anaphase

Chromosomes moving towards the poles.

One labelling / Correct No. of Chromosomes.

(v) Meiosis

(b) (i) Active Transport – To absorb mineral ions from soil.

Diffusion – To take in carbon dioxide for photosynthesis and oxygen for respiration /

Removal of Water vapour during transpiration / attract

insects for pollination by spreading fragrance of flowers.

(ii) Demography – Statistical study of human population with reference to size, density and distribution.

Population density – Number of individuals per square km at any given time.

(iii) Antibiotic – Micro organisms

Antibody – Lymphocytes

(iv) Renal Cortex – Malpighian capsule, Proximal and distal convoluted tubules

Renal medulla – Loop Henle, Collecting ducts

(v) NADP – Nicotinamide Adenine Dinucleotide Phosphate

ATP – Adenosine Tri Phosphate

Question 3:

(a) The diagram given below represents a plant cell after being placed in a strong sugar solution. Study the diagram and answer the questions that follow:

(i) What is the state of the cell shown in the diagram?

(ii) Name the structure that acts as a selectively permeable membrane.

(iii) Label the parts numbered 1 to 4 in the diagram.

(iv) How can the above cell be brought back to its original condition? Mention the scientific term for the recovery of the cell.

(v) State any two features of the above plant cell which is not present in animal cells.

(b) Given below is a representation of a kind of pollution. Study the same and answer the questions that follow:

(i) Name the kind of pollution.

(ii) List any three common sources of this pollution.

(iii) Mention three harmful effects of this pollution on human health.

(iv) Explain the term ‘Pollutant’.

(v) Name two soil pollutants.

Answer:

(a) (i) Flaccid / Plasmolysed

(ii) Plasma membrane

(iii)

1. Cell wall
2. Strong sugar solution
3. Cell membrane
4. Nucleus

(iv) Keeping the cell in tap water / hypotonic solution Deplasmolysis

(v) Cell wall, Chloroplasts, large vacuole (Any two)

(b) (i) Noise pollution

(ii) Loudspeaker, Television, Radio, Loud conversation, Musical bands, etc (Any three)

(iii) Loss of concentration, disturbs sleep, damage to eardrum, deafness, irritability, etc. (Any three)

(iv) Any constituent when added to the environment / air, water or land deteriorates its natural quality.

(v) Industrial wastes, Fertilizers, domestic wastes, Plastics, Pesticides, Biomedical wastes, etc. (Any two)

Question 4:

(a) The diagrams given below represent the relationship between a mouse and a physiological process that occurs in green plants. Study the diagrams and answer the questions that follow:

(i) Name the physiological process occurring in the green plant that has kept the mouse alive.

(ii) Explain the physiological process mentioned above.

(iii) Why did the mouse die in bell jar B?

(iv) What is the significance of the process as stated in (i) for life on earth.

(v) Represent the above mentioned physiological process in the form of a chemical equation.

(b) Mention the exact location of the following:

(i) Prostate gland

(ii) Myelin sheath

(iii) Islets of Langerhans

(iv) Semi-circular canals

(v) Eustachian tube

Answer:

(a) (i) Photosynthesis

(ii) It is a process by which plant cells containing chlorophyll prepare food / glucose from CO₂ and water using sunlight.

(iii) O₂ was used up by the burning candle. Mouse dies due to lack of oxygen / asphyxiation.

(iv)

• Provides food for all organisms
• Provides O₂ for respiration.

(v)

(b) (i) Surrounds urethra close to its origin from urinary bladder.

(ii) Surrounds the axon of neuron.

(iii) In Pancreas

(iv) Inner ear / Part of the membranous labyrinth

(v) Connects middle ear to throat.

Question 5:

(a) The diagram shown below is the longitudinal section of a testis of man. Study it carefully and answer the questions that follow:

(i) Label the parts numbered 1 to 3 in the diagram.

(ii) In which part of the testis are the sperms produced?

(iii) State the functions of the parts labelled 1 and 3 in the diagram.

(iv) Name the cells that secrete Testosterone.

(v) Draw a neat, labelled diagram of a sperm.

(b) Give biological reasons for the following statements:

(i) Some women have facial hair like beard and moustache.

(ii) Cutting of trees should be discouraged.

(iii) In some xerophytes leaves are modified into spines.

(iv) There is frequent urination in winter than in summer.

(v) The left ventricle of the heart has a thicker wall than the right ventricle.

Answer:

(a) (i)

1. Scrotum / Scrotal sac
2. Sperm duct / Vas deferens
3. Epididymis

(ii) Seminiferous tubules

(iii)

• Maintains a temperature of 2 to 3o C less than body temperature for the maturation of sperms.
• Stores the sperms till they become mature.

(iv) Ley dig cells / Interstitial cells

(v)

(b) (i) Overgrowth of Adrenal Coxtex and more secretion of Cortisones stimulates development of certain male characteristics.

(ii)

– Contribute to bringing rain

– Provide O₂ for breathing

– Natural homes for wild animals

– Can result in soil erosion, droughts, flash floods. (Any two)

(iii)

– To reduce the surface area exposed to sunlight, number of stomata are reduced.

– To prevent excessive transpiration.

(iv) Sweat glands are less active in winter, all the excess water in the body has to be eliminated as urine by the kidneys.

(v) Left ventricle has to pump blood till our toes and to the head against gravity. So its walls are thicker. Right ventricle has thinner walls because it pumps blood only upto the lungs.

Question 6:

(a) The diagram given below represents a section of the human heart. Answer the questions that follow:

(i) Which parts of heart are in the diastolic phase? Give a reason to support your answer.

(ii) Label the parts numbered 1 and 2 in the diagram. What type of blood flows through them?

(iii) What causes the heart sounds ‘LUBB’ and ‘DUP’?

(iv) Name the blood vessels that supply oxygenated blood to the heart muscles.

(v) Draw neat labelled diagrams of a cross section of an artery and a vein.

(b) Give appropriate biological / technical terms for the following:

(i) The type of immunity that exists in our body due to our genetic makeup.

(ii) The suppressed allele of a gene.

(iii) The accessory gland in human males whose secretion activates the sperms.

(iv) An apparatus that measures the rate of water uptake in a cut shoot due to transpiration.

(v) The kind of twins formed from two fertilised eggs.

(vi) A pair of corresponding chromosomes of the same size and shape, one from each parent.

(vii) The mild chemical substance which when applied on the body kills germs.

(viii) The type of waste generated in hospitals and pathological laboratories.

(ix) The antiseptic substance in tears.

(x) Cellular components of blood containing haemoglobin.

Answer:

(a) (i) Ventricles

Tricuspid and Bicuspid valves are open / semilunar valves are closed.

(ii)

1. Pulmonary artery, Deoxygenated blood.
2. Pulmonary veins, Oxygenated blood.

(iii) LUBB – Closure of Tricuspid and bicuspid valves.

DUP – Closure of semilunar valves

(iv) Coronary arteries

(v)

Difference in the size of lumen and thickness of muscle layer (Any two labelling).

(b) (i) Innate / Inborn / Natural

(ii) Recessive

(iii) Seminal vesicles

(iv) Potometer

(v) Fraternal

(vi) Homologous chromosomes

(vii)Antiseptic

(viii) Biomedical waste

(ix) Lysozyme

(x) RBCs / Erythrocytes

Question 7:

(a) In a homozygous pea plant, axial flowers (A) are dominant over terminal flowers (a).

(i) What is the phenotype and genotype of the F1 generation if a plant bearing pure axial flowers is crossed with a plant bearing pure terminal flowers?

(ii) Draw a Punnett square board to show the gametes and off springs when both the parent plants are heterozygous for axial flowers.

(iii) What is the phenotypic ratio and genotypic ratio of the above cross shown in (ii).

(iv) State Mendel’s Law of Dominance.

(v) Name two genetic disorders commonly seen in human males.

(b) The diagram given below is an external view of the human brain. Study the same and answer the questions that follow:

(i) Name the parts labelled A, B and C in the diagram.

(ii) State the main functions of the parts labelled A and B.

(iii) What are the structural and functional units of the brain? How are the parts of these units arranged in A and C?

(iv) Mention the collective term for the membranes covering the brain.

(v) What is the function of Cerebrospinal fluid?

Answer:

(a) (i) Phenotype – All bear axial flowers

Genotype – All are heterozygous dominant for axial flowers.

(ii)

(iii) Phenotypic ratio – 3 : 1

Genotypic ratio – 1 : 2 : 1

(iv) Law of Dominance : Out of a pair of contrasting characters, only one is able to express while the other remains suppressed.

(vi) Colour blindness, Haemophilia, Pattern baldness. (Any two)

(b) (i) A – Cerebrum

B – Cerebellum

C – Spinal Cord

(ii) A – Seat of memory, intelligence, consciousness, will power, control voluntary actions,

helps us to think, reason, invent, plan (Any one)

B – Maintains body balance, posture, equilibrium, coordinates muscular activities (Any one)

(iii) Neurons / nerve cells

A – Outer grey matter has cytons and inner white matter has axons.

C – Outer white matter has axons and inner grey matter has cytons.

(iv) Meninges

(v) Protects the brain / spinal cord from injuries and shocks.

We hope ICSE Class 10 Biology Question Paper Solution 2017 must have helped students in their exam preparation. We have also compiled the solutions of other subjects of ICSE Class 10 Previous Years Question Papers at one place. Students can access them by clicking here. Stay tuned to BYJU’S for the latest update on ICSE/CBSE/State Boards/Competitive exams and don’t forget to download the BYJU’S App.