CBSE Class 10 Biology Life Processes Nutrition In Animals Worksheet

Assertion and Reason Type MCQs :

Following questions consists of two statements – Assertion (A) and Reason (R). Answer these questions selecting the appropriate option given below:
A. Both assertion and reason are true, and reason is the correct explanation of assertion.
B. Both assertion and reason are true, but reason is not the correct explanation of assertion.
C. Assertion is true but reason is false.
D. Assertion is false and reason is true.

Question. Assertion: veins have valves.
Reason : the pressure for the flow is far lesser compared to arteries.

Answer: A

Question. Assertion: The Alveoli provide a surface where exchange of gases takes place.
Reason :The Alveolar blood vessels transport oxygenated blood to all the cells of the body.

Answer: A

Question. Assertion: Lypase helps in the digestion of proteins.
Reason : Digestion of proteins in small intestine needs basic medium

Answer: D

Question. Assertion: In plants gaseous exchange takes place by the opening and closing of guard cells.
Reason : The exchange of gases occurs across the surface of stem , roots and leaves.

Answer: B

Question. Assertion: Bread tastes sweet on mastication.
Reason : Salivary amylase converts starch into sugar.

Answer: A

Question. Assertion : kidneys purify blood.
Reason : renal vein has more Oxygen than renal artery.

Answer: C

Question. Assertion : During transpiration the evaporating water carries away heat energy.
Reason : Due to water loss the osmotic pressure inside leaves increases.

Answer: C

Question. Assertion: Herbivores have longer intestine to allow the cellulose to get digested.
Reason : Carnivores have shorter intestine to allow meat to get digested.

Answer: B

I. There is a range of strategies by which the food is taken in and used by the organisms in heterotrophic nutrition. Some organisms breakdown the food material outside the body and then absorb it. Others take in whole material and break it down inside their bodies. What can be taken in and broken down depends on the body design and functioning. Some others derive nutrition from plants and animals without killing them.

Question. Which of the following is an example of saprotroph.
A. Cuscuta
B. Sugarcane
C. Bread mould
D. Amoeba

Answer: A

Question. Taking in whole material and breaking it down inside the body is
A. Parasitic nutrition
B. Holozoic nutrition
C. Saprophytic nutrition
D. Symbiosis

Answer: B

Question. Heterotrophic nutrition involves
A. Production of simple sugar from inorganic compounds
B. Utilisation of chemical energy to prepare food
C. Utilisation of energy obtained by plants
D. All of these

Answer: C

Question. Organisms which derive nutrition from plants and animals without killing them.
A. Parasites
B. Saprophytes
C. Heterotrophs
D. Autotrophs

Answer: A

Question. In which part of amoeba complex food particles are broken down into simpler ones.
A. Cytoplasm
B. Pseudopodia
C. Nucleus
D. Food vacuole

Answer: D

II. 

Question. The enzyme that is released by label A
A. Tripsin
B. Amino acids
C. Amylase
D. Intestinal juices

Answer: C

Question. The movements that occur along part B to push the food forward.
A. Rotation
B. Peristalsis
C. Flexion
D. Protrusion

Answer: B

Question. In case of diarrhoea, which major process does not takes place normally in region G?
A. Absorption of food
B. Absorption of water
C. Secretion of hormones
D. Removal of waste material

Answer: B

Question. Which of these correctly represent the labels B C D and E
A. Pancreas , Oesophagus , Stomach , Liver
B. Oesophagus , Liver , Stomach , Pancreas
C. Stomach , Liver , Oesophagus , Pancreas
D. Oesophagus , Pancreas , Liver , Stomach

Answer: B

Question. Villi are present in
A. D
B. E
C. F
D. A

Answer: C

III. 

Question. Type of respiration seen during fermentation
A. Aerobic
B. Anaerobic
C. Reduction
D. Oxidation

Answer: B

Question. Amount of energy released is more during
A. Anaerobic respiration
B. Fermentation
C. Aerobic respiration
D. Reduction

Answer: C

Question. End product of Aerobic respiration
A. NADH
B, Oxygen
C. ATP
D. CO₂ +ATP+H₂O

Answer: D

Question. The pathway of respiration common in all living organisms is X ; it occurs in the Y and the products formed are two molecules of Z . Identify X Y Z and select the correct answer.
             X                          Y                  Z
A. Glycolysis            Mitochondria    Pyruvic acid
B. Glycolysis           Cytoplasm        Pyruvic acid
C. Citric acid cycle  Cytoplasm        Phosphate
D. Kreb’s cycle       Mitochondria     Acetyl CoA

Answer: B

Question. During vigorous physical exercise, lactic acid is formed from glucose inside the muscle cells because
A. there is lack of oxygen
B. there is lack of water
C. there is excess of carbon dioxide
D. none of the above

Answer: A