ICSE Class 10 Biology Question Paper Solution 2016

ICSE Class 10 Biology paper is considered to be a lengthy paper. Most students could not finish the paper on time. The only way to overcome this problem is by practising more number of sample papers and previous years question papers. So, here we have provided the ICSE Class 10 Biology Question Paper 2016 along with the solutions. By solving the previous year Biology question papers, students will learn the time management skill. They get to know how much time to devote to a particular question. Practising the 2016 Biology question paper will also give them ideas on the difficulty level of the questions asked in the exam. While solving the paper, if they get stuck somewhere, they can refer to the ICSE Class 10 Biology Question Paper 2016 Solution. The solution pdf contains the answers to all questions.

The ICSE Class 10 Biology 2016 exam was started at 11 am and students were allotted 2 hours of time duration to finish the paper. Click on the link below to download the ICSE Class 10 Biology Question Paper Solution 2016 PDF and refer to it any time while studying.

ICSE Class 10 Biology (Paper 3) Question Paper 2016 With Solution

Question 1:

(a) Name the following:

(i) The exchange of chromatid parts between the maternal and the paternal chromatids of a pair of homologous chromosomes during meiosis.

(ii) The number of individuals inhabiting per unit area.

(iii) The immunity acquired by providing readymade antibodies from outside for treating certain infectious diseases.

(iv)The pollutants that cannot be broken down to simple and harmless products.

(v) The part of the brain that carries impulses from one hemisphere of the cerebellum to

the other.

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

(i) A plant cell may burst when:

1. Turgor pressure equalises wall pressure.
2. Turgor pressure exceeds wall pressure.
3. Wall pressure exceeds turgor pressure.
4. None of the above

(ii) The individual flattened stacks of membranous structures inside the chloroplasts are

known as:

1. Grana
2. Stroma
3. Thylakoids
4. Cristae

(iii) The nephrons discharge their urine at the:

1. Urinary bladder
2. Urethra
3. Renal pelvis
4. Renal pyramid

(iv) Gigantism and Acromegaly are due to:

1. Hyposecretion of Thyroxine.
2. Hyposecretion of Growth hormone
3. Hypersecretion of Thyroxine
4. Hypersecretion of Growth hormone

(v) The mineral ion needed for the formation of blood clot is:

1. Potassium
2. Sodium
3. Calcium
4. Iron

(c) In each set of terms given below, there is an odd one and cannot be grouped in the same category to which the other three belong. Identify the odd term in each set and name the category to which the remaining three belong.

Example: Ovary, Fallopian tube, Ureter, Uterus

Odd term: Ureter

Category: Parts of female reproductive system

(i) Sewage, Newspaper, Styrofoam, Hay.

(ii) Thymine, Cytosine, Adenine, Pepsin.

(iii) Malleus, Iris, Stapes, Incus.

(iv) Cortisone, Somatotropin, Adrenocorticotropic hormone, Vasopressin.

(v) Typhoid, Haemophilia, Albinism, Colour blindness.

(d) Complete the following paragraph by filling in the blanks (i) to (v) with appropriate words:

The amount of urine output is under the regulation of a hormone called (i) __________secreted by the (ii) __________ lobe of the pituitary gland. If this hormone secretion is reduced, there is an increased production of urine. This disorder is called (iii) __________. Sometimes excess glucose is passed with urine due to hyposecretion of another hormone called (iv) __________ leading to the cause of a disease called (v)__________.

(e) State the exact location of the following structures:

(i) Centromere

(ii) Chordae tendinae

(iii) Thyroid gland

(iv) Ciliary body

(v) Proximal convoluted tubule.

(f) Given below is a diagram depicting a defect of the human eye,study the same and then answer the questions that follow:

Answer:

(i) Name the defect shown in the diagram.

(ii) What are the two possible reasons that cause this defect?

(iii) Name the type of lens used to correct this defect.

(iv) With the help of a diagram show how the defect shown above is rectified using a suitable lens.

(g) Given in the box below are a set of 14 biological terms. Of these, 12 can be paired into 6 matching pairs. Out of the six pairs, one has been done for you as an example.

Example: endosmosis – Turgid cell.

Identify the remaining five matching pairs :

(h) State the main function of the following:

(i) Lymphocytes of blood

(ii) Leydig cells

(iii) Guard cells

(iv) Eustachian tube

(v) Corpus luteum

Answer:

(a)

(i) Crossing over / genetic recombination/ cross joining

(ii) Population density

(iii) Passive immunity/artficially acquired Passive immunity

(iv) Non biodegradable

(v) pons

(b) (i) B. Turgor pressure exceeds wallpressure

(ii) C. Thylakoids/ A.Grana

(iii) C. Renal pelvis

(iv) D. Hypersecretion of growth hormones

(v) B. Calcium

(c) (i) Odd tem: Styrofoam

Category of others: Biodegradable waste

(ii) Odd term: Pepsin

Category of others : Nitrogenous bases

(iii) Odd term : Iris

Category of others : Earossicles

(iv) Odd term : Cortisone ( hormone from adrenal gland )

Category of others : hormones from pituitary gland)

(v) Odd term: Typhoid

Category: Genetic diseases

(d) (i) Antidiuretic hormone / ADH / Vasopressin

(ii) Posterior

(iii)Diabetes insipidus/ water diabetes

(iv)Insulin

(v) Diabetes mellitus/ sugar diabetes

(e) (i) The region of the chromosome to which the spindle is attached during cell division / Region joining the sister chromatids.

(ii) The cords that arise from the ventricular muscles hold the flaps of the bicuspid and tricuspid valves in position.

(iii) In front of the neck just below the larynx.

(iv) Extension of the choroid of the eye.

(v) In the cortex region of the kidney between the Malpighian capsule and loop of Henle.

(f) (i) Myopia / short sightedness.

(ii)

1. Eye ball is lengthened from front to back.
2. lens is too curved/ rounded

(iii) concave (lens)/ diverging lens

(iv)

Use of concave lens and focussing of image on the retina.

(g) Cushing’s syndrome — hyperglycemia

Acrosome —- spermatozoa

Iris —- colour of eyes

Free of rod and cone cells — blind spot

Addison’s disease —- hypoglycaemia

(h) (i) Produce Antibodies

(ii) Secrete Testosterone/ male sex harmones

(iii) Regulates the opening and closing of stomata

(iv) Equalises air pressure on either side of ear drum for it to vibrate freely.

(v) Secretes progesterone to prepare the uterus for implantation of zygote.

Question 2:

(a) The figure given below is a diagrammatic representation of a part of the cross section of the root in the root hair zone. Study the same and then answer the questions that follow:

(i) Name the parts indicated by the guidelines 1 to 4.

(ii) Which is the process that enables the passage of water from the soil into the root hair?

(iii) Name the pressure that is responsible for the movement of water in the direction indicated by the arrows. Define it.

(iv) Due to an excess of this pressure sometimes drops of water are found along the leaf

margins of some plants especially in the early mornings. What is the phenomenon called?

(v) Draw a well labelled diagram of the root hair cell as it would appear if an excess of fertiliser is added to the soil close to it.

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

(i) Human skin cell and Human ovum (number of chromosomes)

(ii) Sperm duct and fallopian tube (function)

(iii) Red Cross and WHO (one activity)

(iv) Rod cells and cone cells (pigment)

(v) LUBB and DUP (names of the valves whose closure produce the sound)

Answer:

(a)

(i)

1. Root hair cell
2. Soil particles / soil water
3. Xylem vessel
4. Cortex cells

(ii) Endosmosis

(iii) Osmotic pressure / Root Pressure

• It is the minimum pressure to be exerted to prevent the passage of pure solvent into the solution when the two are separated by a semipermeable membrane
• It is the pressure caused due to cell to cell osmosis.

(iv) guttation/ exudation

(v)

(b) (i) Human skin cell : 46/ 23 pairs

Human ovum : 23

(ii) Sperm duct: Transports sperms from testis to urethra

Fallopian tube: Its funnel shaped opening receives the mature eggs from the ovary which are carried by it to the uterus/It is the site of fertilisation.

(iii) Red Cross:

– Extends relief to victims of any calamity like famine, fine, earthquakes, tsunamic

– Supplies blood

– Extends first aid

– Educates people in accident prevention

– Looks after maternal and child welfare centres

– Trains midwives, nurses

– Organises blood donation camps

– Arranges ambulance in emergencies

WHO:

– Supplies information about epidemic diseases

– Promotes projects for research on diseases

– Gives information about cancer research, vaccines, nutritional discoveries, nuclear hazards, drug addiction

– Suggests quarantine measures to prevent spread of diseases

– Lays pharmaceutical standards

– Organise campaigns for control of endemic and epidemic diseases.

– Funds health projects

– Makes health policies

(iv) Rod cells : Rhodopsin/ visual purple

Cone cells : Iodopsin/ visual violet

(v) Bicuspid and tricuspid valve.

Semilunar valves.

Question 3:

(a) Given below is the outline of the human body showing the important glands:

(i) Name the glands marked 1 to 4.

(ii) Name the hormone secreted by part 2. Give one important function of this hormone.

(iii) Name the endocrine part of the part number 3.

(iv) Why is the part labelled 1 called the master gland? Which part of the forebrain controls the gland labelled 1?

(v) Name the gland that secretes the emergency hormone’.

(b) The diagram of an apparatus given below demonstrates a particular process in plants. Study the same and answer the questions that follow:

(i) Name the apparatus.

(ii) Which phenomenon is demonstrated by this apparatus?

(iii) Explain the phenomenon mentioned in (ii) above.

(iv) State two limitations of using this apparatus.

(v) What is the importance of the air bubble in the experiment?

(vi) Name the structures in a plant through which the above process takes place.

Answer:

(a) (i)

1. Pituitary gland
2. Thyroid gland
3. Pancreas
4. Adrenal gland

(ii) Thyroxine;

It controls basal metabolism // Influences general growth of the body / ossification of bone / body temperature / mental development.

(iii) Islet of Langerhans / alpha , beta and delta cells.

(iv) As it controls the secretion of other glands;

Hypothalamus.

(v) Adrenal gland/ supra renal gland

(b) (i) Ganong’s Potometer

(ii) Transpiration/ measures rate of uptake of water due to transpiration

(iii) It is the loss of water as water vapour from the aerial parts of the plant.

(iv)

– Introducing the air bubble is difficult

– Twig may not be alive for a long period

– Changes in the outside temperature / light/ humidity affects the postion of air bubble. (Any two)

(v) Helps to calculate the rate of transpiration in a given time.

(vi) Stomata, Lenticels, Cuticle

Question 4:

(a) (i) Draw a well labelled diagram of the membranous labyrinth found in the inner ear.

(ii) Based on the diagram drawn above in (i) give a suitable term for each of the following descriptions:

1. The sensory cells that help in hearing.
2. The part that is responsible for static balance of the body.
3. The membrane covered opening that connects the middle ear to the inner ear.
4. The fluid present in the middle chamber of cochlea.
5. The structure that maintains dynamic equilibrium of the body.

(b) Give the Biological / technical term for the following:

(i) Complete stoppage of menstrual cycle in females.

(ii) Pigment providing colour to urine.

(iii) The vein which drains the blood from the intestine to the liver.

(iv) The canal through which the testes descend into the scrotum just before the birth of a male baby.

(v) The process causing an undesirable change in the environment.

(vi) The removal of nitrogenous wastes from the body.

(vii) The repeating components of each DNA strand lengthwise.

(viii) An alteration in the genetic material that can be inherited.

(ix) The process of uptake of mineral ions against the concentration gradient using energy from the cell.

(x) Blood vessels carrying blood to the left atrium.

Answer:

(a) (i)

diag. :- 3 semicircular canals shown, coils of cochlea

Labelling :- semicircular canals, utriculus,ampulla, oval window, round window Sacculus, cochlea

(ii)

1. Organ of corti/ spiral organ
2. Utriculus and sacculus.
3. Oval window / round window
4. Endolymph
5. Semicircular canal

(b)

(i) Menopause

(ii) urochrome

(iii) Hepatic portal vein

(iv) Inguinal canal

(v) Pollution

(vi) Excretion

(vii) Nucleotides

(viii) Mutation

(ix) Active transport

(x) Pulmonary vein

Question 5:

(a) The given diagram shows a stage during mitotic division in an animal cell:

(i) Identify the stage. Give a reason to support your answer.

(ii) Draw a neat labelled diagram of the cell as it would appear in the next stage. Name the stage.

(iii) In what two ways is mitotic division in an animal cell different from the mitotic division in a plant cell?

(iv) Name the type of cell division that occurs during:

1. Growth of a shoot
2. Formation of pollen grains.

(b) Give scientific reasons for the following statements:

(i) Colour blindness is more common in men than in women.

(ii) Injury to medulla oblongata leads to death.

(iii) When an ovum gets fertilized, the menstrual cycle stops temporarily in a woman.

(iv) Mature erythrocytes in humans lack nucleus and mitochondria.

(v) Blood flows in arteries in spurts and is under pressure.

Answer:

(a) (i) Prophase. Chromosomes have duplicated, nuclear membrane is disappearing, nucleolus has disappeared.

(ii) Stage Metaphase

No. of chromosomes

Position of chromosomes

Any one labelling

(iii)

(iv)

1. Mitosis
2. Meiosis

(b) Give scientific reasons for the following statements:

(i) Colour blindness is caused by a recessive gene located in the X chromosome. Y chromosome does not carry this gene. In males the single X chromosome carrying the gene expresses itself.

(ii) It controls the involuntary actions like breathing movements and beating of heart.

(iii) When ovum gets fertilized, implantation in the uterus takes place. progesterone level increases to prepare the uterine wall. Progesterone stops menstruation temporarily.

(iv) Absence of nucleus increases surface area for absorption and transport of O₂ to tissues. No cellular respiration as mitochondria is absent and hence does not use O₂ for itself. (Any Two)

(v) because of the rhythmic ventricular contractions and the narrow lumen of arteries.

Question 6:

(a) The diagram given below is that of a developing human foetus. Study the diagram and then answer the questions that follow:

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

(ii) Mention any two functions of the part labelled 2 in the diagram.

(iii) Explain the significance of the part numbered 3 in the diagram.

(iv) Define the term ‘Gestation’. What is the normal gestational period of the developing human embryo?

(v) Mention the sex chromosomes in a male and female embryo.

(b) The following diagram demonstrates a physiological process taking place in green plants. The whole setup was placed in bright sunlight for several hours. Study the diagram and answer the questions that follow:

(i) What aspect of the physiological process is being examined?

(ii) Explain the physiological process mentioned in (i) above.

(iii) Label the parts numbered 1 and 2 in the diagram.

(iv) Write a well-balanced chemical equation for the physiological process explained in (ii) above.

(v) What would happen to the rate of bubbling of the gas if a pinch of sodium bicarbonate is added to the water in the beaker? Explain your answer.

Answer:

(a) (i)

1. Umbilical cord
2. Placenta
3. Amniotic fluid

(ii)

– Diffusion of O2 antibodies and nutrients from maternal blood to foetal blood.

– Diffusion of carbon dioxide, urea, uric acid from foetal blood to maternal blood

– Acts as a barrier and prevents germs from entering foetal blood

– Secretes Oestrogen and progesterone (Any two)

(iii)

– Absorbs mechanical shocks and prevents injury to foetus

– Keeps foetus moist

– Maintains even temperature around foetus

– Allows movement of foetus. (Any one)

(iv) Gestation: It is the full term development of embryo in the uterus

280 days / 40 weeks

(v) Male – XY

Female – XX

(b) (i) Oxygen is released during Photosynthesis

(ii) It is the process by which living plant cells containing chlorophyll prepare food / glucose

using CO₂ and water in the present of sunlight.

(iii)

1. Oxygen
2. Hydrilla / Elodea / Aquatic plant

(iv)

(v) Bubbling of gas / O2 increases. Plant gets more CO2, hence rate of photosynthesis increases

Question 7:

(a) A homozygous tall plant (T) bearing red coloured (R) flowers is crossed with a homozygous dwarf (t) plant bearing white (r) flowers :-

(i) Give the genotype and phenotype of the plants of F1 generation.

(ii) Mention the possible combinations of the gametes that can be obtained from the F₁ hybrid plant.

(iii) State the Mendel’s law of Independent Assortment.

(iv) Mention the phenotypes of the offspring’s obtained in F₂ generation.

(v) What is the phenotypic ratio obtained in F2 generation?

(b) Briefly explain the following terms:

(i) Reflex action

(ii) Power of accommodation

(iii) Photophosphorylation

(iv) Hormone

(v) Synapse

Answer:

(a) (i) Genotype of F₁ generation:-Heterozygous Tall with Red flowers

TtRr

Phenotype: – tall red flowers

(ii) TR, tR, Tr, tr

(iii) Law of Independent assortment

When there are two pairs of contrasting characters, the distribution of the members of one pair into the gametes is independent of the distribution of the other pair.

(iv) Tall red , Dwarf red , tall white; dwarf white.

(v) 9:3:3:1

(b) (i) Reflex action: It is an automatic, quick and involuntary action

(ii) Power of accommodation:The ability of the lens to focus the eye at near and far distances.

(iii) Photophosphorylation: The formation of energy rich compound adenosine triphosphate

(ATP) fromadenosinediphosphate (ADP) and inorganic phosphate in the presence of light.

(iv) Hormone: Secretions of endocrine glands which are poured into the blood to act on target

organs or cells of the body.

(v) Synapse: It is the point of contact between the texminal branches of axon with the dendrites

of the next neuron.

We hope ICSE Class 10 Biology Question Paper Solution 2016 must have provided an insight into the 2016 Question paper and their solutions. Going through this paper solution will surely help students in their exam preparation. Students can also find the answers of other papers of ICSE Class 10 Previous Years Questions by clicking here. Happy Learning and stay tuned to BYJU’S for the latest update on ICSE/CBSE/State Boards/Competitive exams. Also, don’t forget to download the BYJU’S App.