Class 10 Science MCQ Questions of Life processes with Answer

Life processes are the set of activities, like movement, respiration, sensitivity, growth, reproduction, excretion, and nutrition that are essential for a living professionally being to support.

Check MCQ Questions for Class 10 Science Life Processes to prepare for the objective type question that will appear in Board Exams. We have given Class 10 MCQ Questions of Life Processes with a detailed clarification of answer. MCQ Questions makes it simple to get a handle on the top to the bottom concept of the question. 

Students should practice all the MCQ Questions with answer gave underneath to reconsider the essential ideas and find out about the kind of questions that may appear on the board exam.

1. The filtration units of kidneys are called –

(a) Ureter
(b) Urethra
(c) Neurons
(d) nephrons.

Answer:

(d) nephrons

2. The mode of nutrition found in fungi is:

(a) Parasitic nutrition
(b) Holozoic nutrition
(c) Autotrophic nutrition
(d) Saprotrophic nutrition

Answer:

(d) Saprotrophic nutrition

3. The enzymes pepsin and trypsin are secreted respectively by

(a) Stomach and pancreas
(b) Salivary gland and stomach
(c) Liver and pancreas
(d) Liver and salivary gland

Answer:

(a) Stomach and pancreas

Explanation: Stomach secretes the enzyme pepsin and pancreas produces trypsin. Both of them breakdown protein.

4. Which of the following help in protecting the inner lining of the stomach from the harmful effect of hydrochloric acid?

(a) Mucus
(b) Pepsin
(c) Trypsin
(d) Bile

Answer:

(a) Mucus

Explanation: Mucus is a viscous secretion that protects the inner lining of the stomach from the action of HCl.

5. The site of photosynthesis in the cells of a leaf is

(a) chloroplast
(b) mitochondria
(c) cytoplasm
(d) protoplasm

Answer:

(a) chloroplast

6. Main site of photosynthesis

(a) Leaf
(b) Stem
(c) Chloroplast
(d) Guard cells

Answer:

(c) Chloroplast

7. One cell-thick vessels are called

(a) Arteries
(b) Veins
(c) Capillaries
(d) Pulmonary artery

Answer:

(c) Capillaries

8. Blood consist of what fluid medium?

(a) Lymph
(b) Platelets
(c) Plasma
(d) All of these

Answer:

(c) Plasma

9. Sometimes we get painful cramps in our leg muscles after running for a long time due to the accumulation of:

(a) Hydrochloric acid
(b) Fat
(c) Carbon dioxide
(d) Lactic acid

Answer:

(d) Lactic acid

Explanation: The build-up of lactic acid in our muscles while running (less oxygen conditions) causes cramps.

10. The vein which brings clean blood from the lungs into the heart is known as:

(a) Pulmonary vein
(b) Hepatic vein
(c) Superior vena cava
(d) Pulmonary artery

Answer:

(a) Pulmonary vein

Explanation: The pulmonary vein is responsible for bringing oxygenated and pure blood into the heart.

11. Select the correct statement –

(a) Hetrotrophs make their food
(b) Heterotrophs utilize solar energy to make food
(c) Heterotrophs do not make their own food
(d) Heterotrophs are capable of converting carbon dioxide and water into carbohydrates

Answer:

(c) Heterotrophs do not make their own food

12. Which out of them is raw material for photosynthesis ?

(a) carbon dioxide
(b) water
(c) oxygen
(d) all

Answer:

(d) all

13. Which of these is the simplest form of food ?

(a) rice
(b) wheat
(c) Butter
(d) Glucose

Answer:

(d) Glucose

14. The enzyme responsible for the digestion of proteins in the small intestine is:

(a) Pepsin
(b) Trypsin
(c) Amylase
(d) Lipase

Answer:

(b) Trypsin

15. The back flow of blood during the pumping of blood by heart is prevented by:

(a) Walls of ventncles
(b) Walls of atrium
(c) Valves in heart
(d) Walls between atria and ventricles

Answer:

(c) Valves in heart

16. The process of digestion is completed by:

(a) Intestinal juice
(b) trypsin
(c) bile juice
(d) pepsin

Answer:

(a) Intestinal juice

17. The process of diffusion of solvent particles from the region of less solute concentration to a region of high solute concentration through semi-permeable membrane is known as

(a) Diffusion
(b) Osmosis
(c) Translocation
(d) Transpiration

Answer:

(b) Osmosis

Explanation: The diffusion of solvent particles from a region of less concentration to high concentration (concentration gradient) through a semi permeable membrane is called osmosis.

18. Which of the following are energy foods?

(a) Carbohydrates and fats
(b) Proteins and mineral salts
(c) Vitamins and minerals
(d) Water and roughage

Answer:

(a) Carbohydrates and fats

19. The largest gland in human body is:

(a) liver
(b) gastric glands
(c) pancreas
(d) salivary glands.

Answer:

(a) liver

20. The excretory unit of the human excretory system is known as:

(a) Nephridia
(b) Neuron
(c) Nephron
(d) kidneys

Answer:

(c) Nephron

Explanation: Each kidney has large numbers of the filtration units called nephrons.