Loading subject questions

A focused practice platform for competitive-exam MCQs, subject wise, topic wise practice, and current affairs revision.

Exams

SSC CGL
UPSC CSE PRELIMS
IBPS PO
RRB NTPC
CDS

Subjects

Mathematics
Physics
General Knowledge
English
Reasoning

Resources

Current Affairs
Search MCQs
Practice Sets

Company

About Us
Contact
Privacy Policy
Terms of Use
Disclaimer
Copyright

Practice library for exams, subjects, and daily revision. For learning purposes only.

© 2026 ObjectiveMcq.ComAll rights reserved

plants - Biology Previous Year Asked Questions with Answers (Urdu) - ObjectiveMCQ

Biology

Topics

Diseases
- Vitamins
Human Body
- Circulatory System
- Nervous System
Plants
- Respiration

SubjectsBiologyplants

plants in Biology : PYQs with Answers

1 questions · Page 1 of 1

SSC CGL 2021Plants

1.

Which gas is absorbed and which is released by plants during respiration?

A

O₂ absorbed, CO₂ released

B

CO₂ absorbed, O₂ released

C

N₂ absorbed, O₂ released

D

O₂ absorbed, N₂ released

Correct Answer:

(A) O₂ absorbed, CO₂ released

Explanation:

During respiration, plants (like animals) absorb O₂ and release CO₂. This is the reverse of photosynthesis.