The process by which plants prepare their own food using light energy is known as: MCQ with Answer and Explanation

The process by which plants prepare their own food using light energy is known as:
A. Photosynthesis
B. Respiration
C. Transpiration
D. Chemosynthesis
Answer: Option A
Solution (By JKExamLibrary)
Photosynthesis converts CO₂ and H₂O into glucose and oxygen using light energy, catalyzed by chlorophyll in chloroplasts. This process sustains nearly all life, providing food and oxygen. Respiration releases energy from glucose, chemosynthesis uses chemical energy, transpiration is water loss.

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Practice More Biology Questions

Question #1
The enzyme that hydrolyzes triglycerides into fatty acids and glycerol is:
A. Amylase
B. Lipase
C. Protease
D. Nuclease

Correct Answer: Option B


Explanation:
Lipase, produced by the pancreas, breaks down dietary fats (triglycerides) into monoglycerides and free fatty acids, aided by bile salts.

This question belongs to: Science Biology
Question #2
The process by which plants shed their leaves is called:
A. Abscission
B. Senescence
C. Germination
D. Transpiration

Correct Answer: Option A


Explanation:
Abscission is the controlled shedding of leaves, flowers, or fruits, facilitated by the hormone ethylene and enzymes that degrade cell walls at the abscission zone. Senescence is the aging process leading to cell death. Transpiration is water loss, germination is seed sprouting.

This question belongs to: Science Biology
Question #3
Consider statements about biotechnology: 1. Genetic engineering can create transgenic organisms. 2. Cloning produces genetically identical copies. 3. Tissue culture is used for animal cloning only. Which are correct?
A. 1 and 2 only
B. 1 and 3 only
C. 2 and 3 only
D. 1, 2 and 3

Correct Answer: Option A


Explanation:
Genetic engineering involves the direct manipulation of an organism's genome, often used to create transgenic organisms that contain foreign DNA (transgenes) for desired traits. Cloning is the process of producing genetically identical copies of a biological entity, ranging from genes to entire organisms. Tissue culture (micropropagation) is widely used for the rapid, large-scale propagation of plants from small explants in a sterile medium; it is not exclusively or primarily used for animal cloning. Thus, statements 1 and 2 are correct.

This question belongs to: Science Biology