CBSE Class 10 Science Biology Transportation Assignment

Question : Active transport of minerals in a plant requires
(A) a carrier protein
(B) a supply of energy
(C) a molecule against its concentration gradient
(D) all of these
Answer : D

Question : The path of water and minerals in plants during ‘transpiration pull’ is.
(A) root hair → root xylem → endodermis → root cortex → stem xylem → leaf xylem
(B) root hair → root cortex → endodermis → root xylem → stem xylem → leaf xylem
(C) endodermis → root hair → root xylem → root cortex → stem xylem → leaf xylem.
(D) root hair → endodermis → root xylem → root cortex → stem xylem → leaf xylem.
Answer : D

Question : Bast fibre is a woody stem belongs to
(A) cork
(B) cortex
(C) xylem
(D) phloem
Answer : B

Question : Translocation means :
(A) Conduction of food by phloem
(B) Conduction of food by xylem
(C) Conduction of water by phloem
(D) Conduction of water by xylem
Answer : A

Question : Transpiration is helpful in -
(A) Sweating
(B) Loss of Water
(C) Transportation of water & minerals in plant body
(D) Loss of nutrients
Answer : C

Question : A girdled tree (upto) may survive for some time but it will eventually die, because
(A) water will not move upwards
(B) water will not move downwards
(C) sugars and other organic materials will not move upwards
(D) sugars and other other organic materials will not move downwards
Answer : D

Question : Valves are found in veins to check the backflow of blood flowing under
(A) high pressure
(B) low pressure
(C) no pressure
(D) atmospheric pressure.
Answer : B

Question : Companion cells are usually seen to be associated with
(A) fibres tissue
(B) parenchyma tissue
(C) xylem tissue
(D) sieve tissue
Answer : D

Question : The first heart sound is produced when :
(A) intraventricular pressure decreases
(B) semilunar valve snaps shut
(C) bicuspid and tricuspid valve close quickly
(D) diastole begins
Answer : C

Question : Which of the following is used in measuring blood pressure ?
(A) Potometer
(B) Sphygmomanometer
(C) Barometer
(D) Goneometer
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 : D

Question : One of the difference between blood and lymph is that
(A) blood has RBCs and platlets while lymph have WBCs and 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 : Blood vessel carrying blood from lung to heart through
(A) Pulmonary artery
(B) Pulmonary vein
(C) Coronary artery
(D) None of these
Answer : B

Question : Mammals are said to have double circulation ,it means
(A) Blood vessels are paired
(B) There are two types of blood vessels attached to every organ
(C) There are two systems,
(D) The blood circulates twice through the heart
Answer : D

Question : Pulmonary vein carries -
(A) impure blood always
(B) pure blood always
(C) impure blood sometimes
(D) mixed blood
Answer : B

Question : A transport system is needed to transport
(i) Nutrients, oxygen and hormones from the place, they are absorbed or received to the cells.
(ii) Waste products from the place they are formed to the place from where they are eliminated outside
(iii) Nitrogen transport from lungs to organs
(A) (i) and (ii) correct
(B) (i) and (iii) correct
(C) (ii) and (iii) correct
(D) (i) , (ii) & (iii) correct
Answer : A

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