Given below are two statements:
Statement I: In plants, increased levels can lead to decreased fixation due to competition with RuBisCO.
Statement II: In plants, photorespiration is significantly reduced in mesophyll cells and nearly absent in bundle sheath cells.
In the light of the above statements, choose the correct answer from the options given below:
Both Statement I and Statement II are correct
Both Statement I and Statement II are incorrect
Statement I is correct but Statement II is incorrect
Statement I is incorrect but Statement II is correct
Related Questions
Carboxylation ( cycle) is the fixation of into
Amino acid
Cholesterol ring
Proteins
Organic intermediate
During the dark reaction, the acceptor of is
NADPH
RuBP
Stroma in the chloroplasts of higher plants contain
Light-independent reaction enzymes
Light-dependent reaction enzymes
Ribosomes
Chlorophyll
Which of the following statements regarding plants is false?
The primary acceptor is a 5-carbon molecule
The initial carboxylation reaction occurs in Mesophyll
The leaves that fix have two cell types
The Mesophyll cells lack Rubisco enzyme
The Calvin cycle utilizes ATP and NADPH to produce glucose. Which of the following correctly represents the ATP and NADPH requirement per glucose molecule synthesized?
18 ATP and 12 NADPH
12 ATP and 18 NADPH
36 ATP and 24 NADPH
3 ATP and 2 NADPH
In plants, the first stable product of photosynthesis during dark reaction is
PGAL
RuBP
PGA
OAA
Which of the following is NOT directly involved in the regeneration of RuBP during the dark phase of photosynthesis?
ATP
NADPH
ATP synthase
Several enzymes
PEP carboxylase
I. is involved in atleast some fixation in both and plants
II. Catalyses the reaction of fixing into pyruvic acid in bundle sheath cells
III. is capable of fixing more efficiently at lower atmospheric concentration than RuBP carboxylase
Select the correct option
I only
I and III
II and III
I, II and III
The plants are photosynthetically more efficient than plants because
The carbon dioxide compensation point is more b)
Carbon dioxide generated during photorespiration is trapped and recycled through PEP carboxylase
The carbon dioxide efflux is not prevented
They have more chloroplasts
Which of the following correctly describes the products of RuBisCo's oxygenation activity during photorespiration?
Two molecules of phosphoglycerate
Two molecules of phosphoglycolate
One molecule of phosphoglycerate and one molecule of phosphoglycolate
One molecule of phosphoglyceraldehyde and one molecule of phosphoglycolate