Download App

MODEL PAPER 5 — BIOLOGY STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceBIOLOGYMODEL PAPER 51 Mark
MCQ
$C_4$ photosynthetic efficiency is more than $C_3$ pathway because:
  • A
    Photorespiration is present in $C_3$
  • ✓
    Photorespiration is present in both $C_3$ and $C_4$
  • C
    Photorespiration is fast in $C_4$ plants
  • D
    Photorespiration is suppressed in $C_4$ plants
✓

Answer

Correct option: B.
Photorespiration is present in both $C_3$ and $C_4$
$C_4$ plants are more efficient than $C_3$ plants because in $C_4$ 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→Gujarat Board STD 11 Science question papers→Gujarat Board question paper generator→

Similar questions

Which statement is wrong about photorespiration ?
→
In what respect, the pericycle of a root differs from that of the stem
→
Choose the correct statements about protonema
→
Which of the follwing statement(s) is/are correct?

$(i)$ Cockroaches are brown or black bodied animals that are included in class insecta of phylum arthropoda.

$(ii)$ Males bear a pair of short, thread like anal styles which are absent in females.

$(iii)$ Heart of cockroach consists of elongated muscular tube lying along mid dorsal line of thorax and abdomen.

$(iv)$ The nymph grows by moulting about $13$ times to reach the adult form.

→
Which one of the following is not hermaphrodite animal
→
Balbiani rings $($puffs$)$ are sites of:
→
Which of the following is obtained from algae
→
The energy-releasing metabolic process in which substrate is oxidized without an external electron acceptor; is called
→
Chemosynthetic bacteria obtain energy from:
→
Cytokinins are formed in
→