Download App

MODEL PAPER 5 — BIOLOGY STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceBIOLOGYMODEL PAPER 51 Mark
MCQ
C4 photosynthetic efficiency is more than C3 pathway because:
  • A
    Photorespiration is present in C3
  • B
    Photorespiration is present in both C3 and C4
  • C
    Photorespiration is fast in C4 plants
  • D
    Photorespiration is suppressed in C4 plants
✓

Answer

(d) Photorespiration is suppressed in C4 plants
Explanation: C4 plants are more efficient than C3 plants because in C4  plants there is no photorespiration in which fixed carbon is oxidized in the presence of sunlight due to the presence of Kranz Anatomy. There is also a double fixation of $CO _2$.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "M.C.Q (1 Marks)" from MODEL PAPER 5→MODEL PAPER 5 — all question types→BIOLOGY STD 11 Science question papers→Rajasthan Board STD 11 Science question papers→Rajasthan Board question paper generator→

Similar questions

Example of leaf for climbing.
→
Arboretum is:
→
Vasopressin released from the neurohypophysis is mainly responsible for
→
Bananas can be prevented from overripening by:
→
The first event in photosynthesis is
→
Consider the following statements

$I.$ In red algae vegetative reproduction takes place by fragmentation 

$II.$ In red algae the food is stored as floridean starch, which is very similar to amylopectin and glycogen is structure 

$III.$ Cell wall of red algae consists of chitin

Which of the statements given above are correct?

→
Taxonomic studies depends on:
→
Which of the following shows no segregation of plant parts?
→
Which is not found in $TCA$ cycle
→
Net gain of ATP molecules during aerobic respiration is:
→