Some important short answer types question on biology for ICSE students

95. The transport system in plants consists of two kinds of tissues X and Y. The tissue X is made up of living cells and consists of two components A and B. The component A has tiny pores in its end walls and contains only cytoplasm but no nucleus. On the other hand, component B has cytoplasm as well as nucleus. The tissue Y is made up of dead cells and consists of two components C and D. The component C has open ends whereas component D does not have open ends. In flowering plants, either only C or both C and D transport water but D is the only water conducting tissue in non-flowering plants.

(a) What is (i) tissue X (ii) component A, and (iii) component B?

(b) What is (?) tissue Y (ii) component C, and (iii) component D?

96. Water and dissolved minerals get into the root hair of a plant by a process called A and enter the conducting} tissue B. The process C helps the water and dissolved minerals to move up through the tissue B in roots and stem, and reach the leaves of a plant. In the leaves food is made by a process D. This food is then transported to all the parts of a plant through tissue E. The process of distributing food made in the leaves to all the parts of the plant is called F.

(a) What are (i) A (ii) B (iii) C (iv) D (v) E, and (in) F ?

(b) Which tissue is made up of living cells: B or E?

(c) Which tissue, B or E, contains sieve tubes?

(d) Which tissue, B or E, contains tracheids?

97. The liquid connective tissue A circulates in our body continuously without stopping. This tissue contains a pigment B which imparts it a colour C. The tissue A consists of four components D, E, F and G. The component D fights infection and protects us from diseases. The component E helps in the clotting of tissue A if a person gets a cut. The component F is a liquid which consists mainly of water with many substances dissolved in it and component G carries oxygen from the lungs to all the parts of the body.

(a)What is (i) tissue A (ii) pigment B, and (iii) colour C?

(b) Name (i) D (ii) E (iii) F, and (iv) G.

(c) Name one substance (other than oxygen) which is transported by tissue A in the human body.

(d)Which two components of tissue A are the cells without nucleus ?

(e)Name any two organisms (animals) which do not have liquid like A in their body.

98. The human body has an organ A which acts as a double pump. The oxygenated blood coming from the lungs through a blood vessel B enters the upper left chamber C of the double pump. When chamber C contracts, then blood goes into lower left chamber D. The contraction of chamber D forces the blood to go into a blood vessel E which supplies oxygenated blood to all the organs of the body (except the lungs). The deoxygenated blood coming out of the body organs is taken by a blood vessel F to the right upper chamber G of pumping organ. Contraction of chamber G forces the deoxygenated blood into right lower chamber H. And finally the contraction of chamber H sends the deoxygenated blood into lungs through a blood vessel I.

(a)What is organ A?

(b) Name the blood vessel (i) B (ii) E (iii) F, and (iv) I.

(c) What are chambers (i) C, and (ii) D?

(d)What are chambers (i) G and (ii) H ?

99. A liquid X of colour Y circulates in the human body only in one direction : from body tissues to the heart. Among other things, liquid X contains germs from cells and dead cells. The liquid X is cleaned of germs and dead cells by a special type of white blood cells called Z. This cleaned liquid is then put into blood circulatory system in subclavian veins.

(a)What is (i) liquid X, and (ii) colour Y?

(b) What is Z?

(c) The liquid X is somewhat similar to a component of blood. Name this component.

(d)Why is liquid X not red?

100. There is a pair of bean-shaped organs P in the human body towards the back, just above the waist. A waste product Q formed by the decomposition of unused proteins in the liver is brought into organ P through blood by an artery R. The numerous tiny filters S present in organ P clean the dirty blood by removing the waste product Q. The clean blood goes into circulation through a vein T. The waste substance Q, other waste salts, and excess water form a yellowish liquid U which goes from organ P into a bag-like structure V through two tubes W. This liquid is then thrown out of the body through a tube X.

(a)What is (i) organ P, and (it) waste substance Q?

(b) Name (i) artery R, and (ii) vein T.

(c) What are tiny filters S known as?

(d)Name (i) liquid U (ii) structure V (iii) tubes W, and (iv) tube X.

101. The organs A of a person have been damaged completely due to which too much of a poisonous waste material B has started accumulating in his blood, making it dirty. In order to save this person’s life, the blood from an artery in the person’s arm is made to flow into long tubes made of substance E which are kept in coiled form in a tank containing solution F. This solution contains three materials G, H and I in similar proportions to those in normal blood. As the person’s blood passes through long tubes of substance E, most of the wastes present in it go into solution. The clean blood is then put back into a vein in the arm of the person for circulation.

(a)What are organs A?

(b) Name the waste substance B.

(c) What are (z) E, and (ii) F?

(d) Name G, H and I.

(e) What is the process described above known as?

Answers:

95. (a) (i) Phloem (if) Sieve tube (iii) Companion cell (b) (i) Xylem (ii) Xylem vessel (iii) Tracheids 96. (a) (i) Diffusion (ii) Xylem (iii) Transpiration (iv) Photosynthesis (v) Phloem (vi) Translocation (b) E (c) E (d) B 97. (a) (i) Blood (ii) Haemoglobin (iii) Red (b) (i) White blood cells (ii) Platelets (iii) Plasma (iv) Red blood cells (c) Digested food (d) E (Platelets) and G (Red blood cells) (e) Amoeba and Grasshopper 98. (a) Heart (b) (i) Pulmonary vein (ii) Aorta (iii) Vena cava (iv) Pulmonary artery (c) (i) Left atrium (ii) Left ventricle (d) (i) Right atrium (ii) Right ventricle 99. (a) (i) Lymph (ii) Light yellow (b) Lymphocytes (c) Plasma (d) It does not contain red blood cells having the red pigment haemoglobin 100. (a) (i) Kidneys (ii) Urea (b) (i) Renal artery (ii) Renal vein (c) Nephrons (d) (i) Urine (ii) Bladder (iii) Ureters (iv) Urethra 101. (a) Kidneys (b) Urea (c) (i) Cellulose (ii) Dialysing solution (d) Water, Glucose and Salts (e) Dialysis.