Class 10 Science Life Processes

Class 10 Science Life Processes

 

Class 10 Science Life Processes Fill in the blanks , Multiple Choice Question [mcq] and True false .

 

Fill in the Blanks

1. The process of breaking down food to release energy is called ________.
Answer: respiration

2. Green plants prepare their food through the process of ________.
Answer: photosynthesis

3. The tiny pores on leaves for gas exchange are called ________.
Answer: stomata

4. The energy currency of the cell is ________.
Answer: ATP

5. The pigment responsible for photosynthesis in plants is ________.
Answer: chlorophyll

6. The muscular organ that pumps blood in humans is the ________.
Answer: heart

7. The blood vessels that carry oxygen-rich blood away from the heart are called ________.
Answer: arteries

8. The process of removing waste from the body is called ________.
Answer: excretion

9. The functional unit of the kidney is the ________.
Answer: nephron

10. The transport of food in plants occurs through ________.
Answer: phloem

11. The breakdown of glucose in the absence of oxygen is called ________ respiration.
Answer: anaerobic

12. The enzyme in saliva that breaks down starch is ________.
Answer: salivary amylase

13. The part of the digestive system where most nutrient absorption occurs is the ________.
Answer: small intestine

14. The gas released during photosynthesis is ________.
Answer: oxygen

15. The process of water movement in plants is called ________.
Answer: transpiration

 

Multiple Choice Questions (MCQs)

 

1. What is the primary function of xylem in plants?
a) Transport of food
b) Transport of water
c) Transport of oxygen
d) Transport of hormones
Answer: b) Transport of water

 

2. Which organelle is known as the “powerhouse of the cell”?
a) Nucleus
b) Mitochondria
c) Chloroplast
d) Ribosome
Answer: b) Mitochondria

 

3. What is the main waste product excreted by human kidneys?
a) Oxygen
b) Urea
c) Glucose
d) Carbon dioxide
Answer: b) Urea

 

4. Which gas is taken in by plants during photosynthesis?
a) Oxygen
b) Nitrogen
c) Carbon dioxide
d) Hydrogen
Answer: c) Carbon dioxide

 

5. Where does digestion of proteins begin in humans?
a) Mouth
b) Stomach
c) Small intestine
d) Large intestine
Answer: b) Stomach

 

6. What is the role of haemoglobin in blood?
a) Digestion of food
b) Transport of oxygen
c) Production of hormones
d) Storage of fat
Answer: b) Transport of oxygen

 

7. Which process releases the most energy from glucose?
a) Anaerobic respiration
b) Aerobic respiration
c) Fermentation
d) Photosynthesis
Answer: b) Aerobic respiration