Which tissue provides mechanical support and flexibility to the growing parts of a plant? MCQ with Answer and Explanation

Which tissue provides mechanical support and flexibility to the growing parts of a plant?
A. Collenchyma
B. Sclerenchyma
C. Xylem
D. Parenchyma
Answer: Option A
Solution (By JKSSB Mock Tests)
Collenchyma is a simple permanent tissue characterized by cells with thickened corners due to the deposition of cellulose and pectin. It provides mechanical support, tensile strength, and flexibility to the growing parts of the plant (like stems and petioles), allowing them to bend without breaking. Parenchyma is for storage, and sclerenchyma provides rigid support.

Discuss this Question (0)

No comments yet. Be the first to start the discussion!

Practice More Biology Questions

Question #1
The scientist who discovered the bacterium that causes cholera was:
A. Robert Koch
B. Louis Pasteur
C. Filippo Pacini
D. John Snow

Correct Answer: Option C


Explanation:
Filippo Pacini first observed Vibrio cholerae in 1854, but Robert Koch later independently identified it and demonstrated its role. Koch is often credited, but Pacini's discovery was earlier. John Snow linked cholera to water.

This question belongs to: Science Biology
Question #2
Which of the following is a nitrogen-fixing bacterium in legume roots?
A. Lactobacillus
B. Rhizobium
C. Nitrosomonas
D. Azotobacter

Correct Answer: Option B


Explanation:
Rhizobium species form symbiotic root nodules in legumes and fix atmospheric nitrogen into ammonia. Azotobacter is free-living, Nitrosomonas nitrifies, Lactobacillus ferments.

This question belongs to: Science Biology
Question #3
In which phase of mitosis do chromosomes align at the equator?
A. Anaphase
B. Prophase
C. Metaphase
D. Telophase

Correct Answer: Option C


Explanation:
During metaphase, chromosomes are maximally condensed and attach to spindle fibers at the kinetochores, aligning at the metaphase plate.

This question belongs to: Science Biology