CBSE Class 10 Science Biology Transportation Assignment Set 02

Question. Osmosis is the movement of :
(a) solute particles from higher concentration to lower concentration
(b) solvent particles from higher water potential to lower water potential through a semi permeable membrane
(c) solute particles from higher concentration to lower concentration through a semipermeable membrane
(d) solvent particles from lower water potential to higher water potential.

Answer: B

Question. The phenomena non of uptake of water at the expense of energy by the cells and usually against the osmotic gradient is known as
(a) active absorption
(b) passive absorption
(c) osmosis
(d) diffusion

Question. Which of the following parts of a kidney contains the lowest concentration of urea ?
(A) Lop of Henle
(B) Branches of renal vein
(C) Bowman’s capsule
(D) Glomerulus

Answer: B

Question. The ultimate cause for the movement of water against the gravity in a tree is
(a) osmosis
(b) transpiration
(c) imbibitions
(d) photosynthesis

Answer: B

Question. Water will be absorbed by root hair when
(a) concentration of solutes in the cells sap in high
(b) plant in rapidly respiring
(c) they are separated from soil by a permeable membrane
(d) concentration of salts in the soil in high.

Answer: A

Question. Root cap has no role in water absorption because
(a) it has no direct connection with the vascular system
(b) it has no cells containing chloroplasts
(c) it has no root hairs
(d) it has loosely arranged cells.

Answer: C

Question. Which one of the following is connected with transport of water in plants ?
(a) Phloem
(b) Xylem
(c) Epidermis
(d) Cambium

Answer: B

Question. Which of the following contributes most to transport of water from the ground to the leaves of a tall tree ?
(a) Breakdown of ATP
(b) Capillary rise of water is xylem
(c) Cohesion of water and transpiration pull
(d) Root pressure.

Answer: C

Question. The carbohydrates synthesized in the leaves are transported through sieve tubes most commonly in the form of
(a) glucose
(b) starch
(c) sucrose
(d) cellulose

Answer: C

Question. In a closed circulatory system, blood is completely enclosed with in
(a) sinuses
(b) vessels
(c) heart
(d) skeleton

Answer: B

Question. An artery is a vessel that carries blood
(a) with high concentration of oxygen
(b) with high concentration of CO2
(c) away from the heart
(d) both A & C

Answer: B

Question. In the cardiac cycle, diastole is
(a) the number of heart beats per minute
(b) the relaxation period after contraction of the heart
(c) the forceful pumping action of the heart
(d) the contraction period after relaxation of the heart.

Answer: B

Question. Major function of contractive vacuole is
(A) excretion
(B) circulation
(C) osmoregulation
(D) all the above

Answer: C

Question. Which one is a accessory excretory organ
(A) Liver
(B) Stomach
(C) Intestine
(D) Heart

Answer: A

Question. One of the difference between blood and lymph is that
(a) blood has RBCs and WBCs while lymph has Lymphocytes.
(b) blood has RBCs while lymph has no WBCs
(c) blood has WBCs while lymph has RBCs
(d) blood has dissolved organic salts while lymph has no such inorganic salt.

Answer: A

Question. Values are found in veins to check the backflow of blood flowing under
(a) low pressure
(b) high pressure
(c) no pressure
(d) atmospheric pressure.

Answer: B

Question. The process of transpiration in plants helps in
(a) opening of stomata
(b) absorption of CO₂ from atmosphere
(c) upward conduction of water and minerals
(d) absorption of O₂ from atmosphere

Answer: C

Question. Opening and closing of stomata is due to
(a) pressure of gases inside the leaves
(b) changes of turgor pressure in guard cells
(c) effect of hormones
(d) their genetic constitution

Answer: B

Question. Which of the following is used in measuring transpiration ?
(a) Photometer
(b) Cobalt chloride paper
(c) Bell - jar
(d) None of the options

Answer: A

Question. Translocation of solutes primarily takes place through
(a) phloem
(b) xylem
(c) cortex
(d) pith.

Answer: A

Question. A mature human erythrocyte has the typical characteristic of
(a) a eukaryotic cell
(b) a prokaryotic cell
(c) both eukaryotic and prokaryotic cell
(d) neither eukaryotic nor prokaryotic cell

Answer: B

Question. Blood vessel carrying blood from lung to heart through
(a) Pulmonary artery
(b) Pulmonary vein
(c) Coronary artery
(d) None of the options

Answer: B

Question. Uriniferous tubules of a kidney are concerned with formation of
(A) glucose
(B) amino acids
(C) hormones
(D) urine

Answer: D

Question. Excretion is removal of
(A) CO₂
(B) harmful and useless ingredients
(C) extra water
(D) metabolic wastes

Answer: D

Question. Ammonia is converted into urea in
(A) kidney
(B) spleen
(C) liver
(D) nephron

Answer: C

Question. Removal of calcium from freshly collected blood will
(a) result in clotting
(b) prevent clotting
(c) prevent oxidation of hemoglobin
(d) cause hemolysis

Answer: B

Question. Function of loop of Henle is
(A) conservation of water
(B) formation of urine
(C) filtration of blood
(D) passage of urine

Answer: A

Question. Urea is transported through
(A) RBCs
(B) WBCs
(C) Plasma
(D) All of the above

Answer: C

Question. Main function of kidney is
(A) passive absorption
(B) ultrafiltration
(C) selective reabsorption
(D) Both B and C

Answer: D