ICSE Biology 2021 Specimen Paper for Class-10 Solved

ICSE Biology 2021 Specimen Paper for Class-10 Solved based on Further reduced syllabus. Specimen Mathematics ICSE Class-10 Paper for 2021. Model Specimen Paper for ICSE Board Class-10 Biology. Hence by better practice and Model Sample Paper ICSE Biology 2021 Specimen is very helpful for ICSE student appearing in 2020 exam of council. Visit official website www.cise.org for detail information about ICSE Class-10 Mathematics.

ICSE Biology 2021 Specimen Paper for Class-10

based on Further reduced syllabus

General Instructions:

  • Answers to this Paper must be written on the paper provided separately.
  • You will not be allowed to write during the 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.
  • Attempt all questions from Section I and any four questions from Section II.
  • The intended marks for questions or parts of questions are given in brackets [ ]

Section -1 (40 Marks)
(Attempt All questions from this section)

Question 1.
(a) Name the following :  [5]
(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) Openings on the stem through which transpiration occurs

(b) Choose the correct answer from the four options given below : [5]
(i) A plant cell may burst when :
(A) Turgor pressure equalises wall pressure.
(B) Turgor pressure exceeds wall pressure.
(C) Wall pressure exceeds turgor pressure.
(D) None of the above
(ii) The individual flattened stacks of membranous structures inside the chloroplasts are known as :
(A) Grana (B) Stroma (C) Thylakoids (D) Cristae
(iii) The nephrons discharge their urine at the :
(A) Urinary bladder (B) Urethra (C) Renal pelvis (D) Renal pyramid
(iv) Gigantism and Acromegaly are due to :
(A) Hyposecretion of Thyroxine
(B) Hyposecretion of Growth hormone
(C) Hypersecretion of Thyroxine
(D) Hypersecretion of Growth hormone
(v) The mineral ion needed for the formation of blood clot is :
(A) Potassium (B) Sodium (C) Calcium (D) Iron

(c) Complete the following paragraph by filling in the blanks (i) to (v) with appropriate words: [5]
To test a leaf for starch, the leaf is boiled in water to (i)________. It is then boiled in Methylated spirit to (ii) ________.The leaf is dipped in warm water to soften it. It is placed in a petri dish, and (iii) ___________. solution is added. The region of the leaf which contains starch, turns (iv) _________. and the region which does not contain starch, turns (v) _________.

(d) Mention the exact location of the following structures :
(i) Thylakoids (ii) Organ of Corti (iii) Lenticels (iv) Bicuspid Value (v) Loop of Henle [5]

(e)

 Given below is a diagram depicting a defect of the human eye, study the same and then answer the questions that follow : [5]

Given below is a diagram depicting a defect of the human eye

(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.

(f)

 State the main function of the following: [5]

(i) Lymphocytes of blood
(ii) Leydig cells
(iii) Guard cells
(iv) Eustachian tube
(v) Corpus luteum

(g)

Match the items given in Column A with the most appropriate ones in Column B and REWRITE the correct matching pairs :
Column A   
                  Column B 

(i) Cranial nerves            Testosterone
(ii) Leydig cells                Natural reflex
(iii) Acetylcholine            12 pairs
(iv) Spinal nerves             Prolactin
(v) Sneezing                     Neurotransmitter
– 18 pairs

– 31 pairs
– Conditioned reflex

(h)

Choose the ODD one out from the following terms given and name the CATEGORY to which the others belong: [5]
Example: Nose, Tongue, Arm, Eye
Answer: Odd Term – Arm, Category – Sense organs.
(i) motor nerve, sensory nerve , effector, receptor , stimuli, uriniferous
(ii) Lumen, muscular tissue, connective tissue, pericardium
(iii) Dendrites, Medullary Sheath, Axon, Spinal cord
(iv) Centrosome, Cell wall, Cell membrane, Large vacuoles
(v) Prostate gland, Cowper’s gland, seminal vesicle, seminiferous tubules.


Section – II (40 Marks)

ICSE Biology 2021 Specimen

(Attempt any four questions from this section

Question 2.
(a) The diagram given below represents a stage during cell division. Study the same and answer the questions that follow :
ICSE Biology Question Paper 2018 Solved for Class 10 - 4
(i) Identify whether it is a plant cell or an animal cell. Give a reasop in support of your answer.
(ii) Name the stage depicted in the diagram.
What is the unique feature observed in this stage?
(iii) Name the type of cell division that occurs during :

  1. Replacement of old leaves by new ones.
  2. Formation of gametes.

(iv) What is the stage that comes before the stage shown in the diagram ?
(v) Draw a neat, labelled diagram of the stage mentioned in (iv) above keeping the chromosome number constant.

(b) The diagram below represents the simplified pathway of the circulation of blood. Study the same and answer the questions that follow  :
ICSE Biology Question Paper 2014 Solved for Class 10 - 2
(i) Name the blood vessels labelled 1 and 2.
(ii) State the function of blood vessels labelled 5 and 8.
(iii) What is the importance of the blood vessel labelled 6 ?
(iv) Which blood vessel will contain a high amount of glucose and amino acids after a meal ?
(v) Draw a diagram of the different blood cells as seen in a smear of human blood.  [5]

Question-3

(a) Differentiate between the following pairs on the basis of what is mentioned in brackets :
(i) Photolysis and Photophosphorylation. (Definition)
(ii) Bicuspid valve and Tricuspid valve. (Function).
(iii)
(iv) Cerebrum and Spinal cord. (Arrangement of nerve cells)
(v) Bowman’s capsule and Malpighian capsule. (Parts included)

(b) Briefly explain the following terms :
(
i) Genes.
(ii) Cytokinesis in plant cells.
(iii) Guttation.
(iv) Diabetes insipidus.

(v) Osmosis

Question-4 (ICSE Biology 2021 Specimen)

(a) An apparatus as shown alongside was set up to investigate a physiolo¬gical process in plants. The setup was w kept in sunlight for two hours. Droplets of water were then seen inside the bell jar. Answer the questions that follow :
ICSE Biology Question Paper 2015 Solved for Class 10 - 4(i) Name the process being studied.
(ii) Explain the process named above m Q. 3. (a) (i).
(iii) Why was the pot covered with a plastic sheet ?
(iv) Suggest a suitable control for this experiment.
(v) Mention two ways by, which this process is beneficial to plants.
(vi) List three adaptations in plants to reduce the above mentioned process. [5]

(b) Given below is the outline of the human body showing the important glands : [5] ICSE Biology Question Paper 2016 Solved for Class 10 - 5(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 numbered 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’.

Question-5

(a) The diagram given below represents an organ system in the human body. Study the same and answer the questions that follow : [5] ICSE 2019 Biology Question Paper Solved for Class 10 - 9
(i) Identify the system.
(ii) Label the parts marked 2 and 4. Mention the function of part 5.
(iii) Name the structural and functional units of the part marked 1.
(iv) What is the fluid that accumulates in part 3? Which is the main nitrogenous waste present in it?
(v) Draw a neat, labelled diagram showing the longitudinal section of part 1.

(b)

State whether the following statements are true (T) or false (F).

(a) The main component of the white matter of the brain is perikaryon. (T/F)

(b) The arachnoid layer fits closely inside the pia mater. (T/F)

(c) A double chain of ganglia, one on each side of the nerve cord belongs to the spinal cord. (T/F)

(d) Dura mater is the outermost layer of the meninges. (T/F)

Question-6 (ICSE Biology 2021 Specimen)

(a)

The diagram below represents a layer of epidermal cells showing a fully grown root hair. Study the diagram and answer the questions that follow:

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

(ii) The root hair cell is in a turgid state. Name and explain the process that caused this state.

(iii) Mention one distinct difference between the parts labelled A and B.

(iv) Draw a diagram of the above root hair cell as it would appear when a concentrated solution of fertilizers is added near it.

(b)

Write down the functional activity of the following parts:

(a) Glomerulus

(b) Henle’s loop

(c) Ureter

(d) Renal artery

(e) Urethra

Question-7

(a)

Differentiate between members of each of the following pairs with reference to phrases in brackets:

(i) Antibodies and Antibiotics (Source)

(ii) RBC and WBC (Structure)

(iii) Serum and Vaccine (Composition)

(b)

Draw a labelled diagram of a Myelinated Neuron


Solutions of ICSE Biology 2021 Specimen

Answer-1

(a)

(i) Osmosis
(ii) Liver
(iii) Concave lens
(iv) Oxytocin
(v) Lenticels

(b)

(i) (B) Turgor pressure exceeds wall pressure.
(ii) (C) Thylakoids
(iii) (C) Renal pelvis
(iv) (D) Hypersecretion of Growth hormone
(v) (C) Calcium

(c)

(i) to kill the cells / destroy the enzymes
(ii) Remove chlorophyll / to decolorized it
(iii) Iodine
(iv) Blue black
(v) Brown/yellow

(d)

(i) Thylakoids (ii) Organ of Corti (iii) Lenticels (iv) Bicuspid Value (v) Loop of Henle [5]

(e)

(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.

(f)

(i) Lymphocytes of blood: Produce antibodies.
(ii) Leydig cells: Secrete male sex hormone testosterone.
(iii) Guard cells: Regulate the opening and closing of stomata in leaf to facilitate transpiration and exchange of gases.
(iv) Eustachian tube: Balance air pressure on either sides of the ear drum. So that ear drum can vibrate freely.
(v) Corpus luteum: Secretes hormones oesterogen, progesterone and relaxin.

(g)

Column A                   Column B
(i) Cranial nerves –        12 pairs

(ii) Leydig cells –           Testosterone
(iii) Acetylcholine –        Neurotransmitter
(iv) Spinal nerves –        31 pairs

(v) Sneezing –                Natural reflex

(h)

(i) Odd term – Urineferous– Category Nervous System

(ii) Odd term – Pericardium, Category – Parts of blood vessels

(iii) Odd term – Spinal cord, Category – Parts of Neuron

(iv) Odd term – Centrosome, Category – Parts of plant cell

(v) Odd term – Seminiferous tubule, Category – Accessory glands of male reproductive system


Answer-2

(a)

(i) Animal cell. Centriole is present. [It can be a plant cell also as it is double layered (cell wall present) and astral rays are absent].

(ii) Metaphase. Unique feature is chromosomes are arranged at the equatorial plate (metaphasic) plate.

(iii)

  1. Mitosis
  2. Meiosis

(iv) Prophase

(v)
ICSE Biology Question Paper 2018 Solved for Class 10 - 5

(b)

 (i) (1) Anterior/Superior venacava (2) Dorsal aorta
(ii) Function of 5: Supply oxygenated blood to liver.
Function of 8: Cajry deoxygenated blood from posterior parts of the body to the right auricle of heart.
(iii) Importance of the blood vessel labelled 6: Blood vessel 6 is called Hepatic portal vein. It carries deoxygenated blood from intestine to liver. This blood contains excess glucose, some toxic substances etc. which are sent to liver where they are detoxified and the excess glucose is converted to glycogen and stored. This prevents these substances from directly entering the heart and damaging the heart.
(iv) Blood Vessel-6
(v)
ICSE Biology Question Paper 2014 Solved for Class 10 - 3

(a)
ICSE Biology Question Paper 2013 Solved for Class 10 - 4

(b) 

(i) Genes: Genes are units of heredity that determine particular traits (e.g., colour of hair, blood group, colour of eye etc.)
(ii) Cytokinesis in plant cells: Cells in multicellular plants do not have centrioles. The division of cytoplasm occurs by the formation of a new cell wall in the equatorial regien at the end of anaphase. In telophase, new cellulose particles are gradually deposited in the equatorial zone. The particles extend on either side, from the centre towards the periphery (centrifugal) until it completely divides the cell. These particles fuse together to form a delicate plate membrane.
(iii) Guttation: The loss of water in the form of water droplets along the margins of leaves through hydathodes.
It takes place due to increased hydrostatic pressure that builds up within the cells. The wall pressure that develops in fully turgid parenchymatous cells force the water out.
(iv) Diapedes insipidus: The condition occurs due to lesser secretion of vasopressin (Anti-diuretic hormone) from the posterior lobe of pituitary gland. The disease is characterized by excretion of large amounts of urine and subsequent dehydration and thirst. No sugar or albumin is present in the urine. A person with severe diabetes insipidus may die due to dehydration if deprived of water for few days.

(v) Osmosis: It is the movement of water molecules from the region of its lower concentration to the region of higher concentration through semipermeable membrane.

Answer-4

(a)

(i) Transpiration.
(ii) The process in which plants lose water in the form of vapour from its aerial parts.
(iii) To prevent escape of the soil water as vapour.
(iv) A similar set up without a living plant.
(v)

1. Due to transpiration there is an upward movement of water so roots can absorb more water and thus minerals from soil.
2. The transpired water forms a cool blanket around the plant thus protecting it from the heat of sun.
(vi) 1. The stomata are sunken into pits.
2. The stomata are covered by hair.
3. The leaf is narrow to reduce the number of stomata.

(b)

(i)

1. Pituitary gland.
2. Thyroid gland
3. Pancreas
4. Adrenal gland
(ii) Thyroxine. It regulates basal metabolism of the body.
(iii) Islets of Langerhans.
(iv) Because it controls the secretions of all the other endocrine gland. Hypothalamus controls it.
(v) Adrenal medulla (part of Adrenal gland.)

Answer-5

(a)

(i) Urinary / Excretory system

(ii)

2 – Left Ureters
4 – Sphincter muscle
5 – Urine is expelled from urinary bladder through urethra.

(iii) Nephron

(iv) Urine; main nitrogenous water present in it is urea.

(v)
ICSE 2019 Biology Question Paper Solved for Class 10 - 10

(b)

(a) False

(b) False

(c) True

(d) True

Answer-6

(a)

(i)

A – Cell wall

B – Cell membrane

C – Cytoplasm

D – Nucleus

(ii)

A root hair gets turgid because of the absorption of water from the surrounding. Absorption of water by root hair is achieved by the process of osmosis. The concentration of water in the surrounding is more than that of the interior of the cell; this causes the water from the surrounding to move in because of endosmosis.

(iii)

Cell wall Cell membrane
The cell wall of a root hair is freely permeable and allows both salt and water to pass through. The cell membrane of a root hair is semi-permeable and does not allow large dissolved salt molecules to pass through.

(iv)

(b)

(a) Glomerulus is involved in the process of ultrafiltration. The liquid part of the blood which is plasma including urea, salts, glucose filters out from the glomerulus into the renal tubule.

(b) Henle’s loop is involved in reabsorption of water and sodium ions.

(c) Ureter carries urine to the urinary bladder by ureteral peristalsis.

(d) Renal artery supplied blood to the kidney.

(e) Urethra is involved in the process of micturition i.e. expelling urine out of the body.

Answer-7

(a)

(i)

Differences between antibodies and antibiotics based on their source:

Antibodies Antibiotics
They are produced by lymphocytes in response to the entry of pathogens in the bloodstream. They are the medicines extracted from some bacteria and fungi. Antibiotics destroy or inhibit the growth of pathogens.

(ii)

Differences between RBC and WBC based on their structure:

RBC WBC
It is enucleated, biconcave, disc-like structure, flat in the centre while thick and rounded at the periphery. It is nucleated and amoeboid in shape.

(iii)

Differences between serum and vaccine based on their composition:

Serum Vaccine
The plasma from which the protein fibrinogen has been removed is called serum. Vaccine is killed or living weakened germs which are introduced in the body to stimulate the production of antibodies against pathogens for a particular disease.

(b)

Myelinated Neuron

myelinated neuron

–: End of ICSE Biology 2021 Specimen paper : —

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