The process by which plants lose water in the form of liquid from hydathodes is: MCQ with Answer and Explanation

The process by which plants lose water in the form of liquid from hydathodes is:
A. Evaporation
B. Bleeding
C. Guttation
D. Transpiration
Answer: Option C
Solution (By JKExamLibrary)
Guttation is the exudation of water droplets containing dissolved minerals from hydathodes at leaf margins, driven by root pressure when transpiration is low. Transpiration is vapor loss, bleeding is sap from cut tissue.

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Practice More Biology Questions

Question #1
Consider statements about human anatomy: 1. The humerus is the bone of the upper arm. 2. The radius and ulna are bones of the lower arm. 3. The patella is a bone in the skull. Which are correct?
A. 1 and 3 only
B. 1 and 2 only
C. 1, 2 and 3
D. 2 and 3 only

Correct Answer: Option B


Explanation:
The humerus is the single, long bone of the upper arm, connecting the shoulder to the elbow. The radius and ulna are the two parallel bones of the forearm (lower arm), connecting the elbow to the wrist. The patella, commonly known as the kneecap, is a small, flat, triangular bone located at the front of the knee joint, not in the skull. Thus, statements 1 and 2 are correct.

This question belongs to: Science Biology
Question #2
A network of interconnected food chains is called a:
A. Trophic level
B. Ecological niche
C. Food web
D. Food pyramid

Correct Answer: Option C


Explanation:
A food web represents complex feeding relationships in an ecosystem, showing how multiple food chains are linked. Food chain is linear.

This question belongs to: Science Biology
Question #3
The process by which pollen grains are transferred to the stigma is called:
A. Dispersal
B. Fertilization
C. Pollination
D. Germination

Correct Answer: Option C


Explanation:
Pollination is the transfer of pollen from the anther to the stigma of a flower, a prerequisite for fertilization. Fertilization is the fusion of male and female gametes. Germination is seed growth, dispersal is seed spreading.

This question belongs to: Science Biology