2001 AIPMT Photosynthesis in Higher PlantsC3 and C4 Pathways Easy Question 85 of 91 in Photosynthesis in Higher Plants

Which pair is wrong : -

A $C_3$ – Maize
B $C_4$ – Kranz anatomy
C Calvin cycle – PGA
D Hatch and Slack cycle – O.A.A.

The answer is A.

Solution

Maize is a $C_4$ plant (like sugarcane and sorghum), not a $C_3$ plant. So '$C_3$ – Maize' is wrong.
$C_4$ plants have Kranz anatomy (bundle sheath cells with chloroplasts around the vascular bundles); correct.
The first stable product of the Calvin cycle is PGA; correct.
The first stable product of the Hatch and Slack ($C_4$) pathway is oxaloacetic acid (OAA); correct.
So the wrong pair is $C_3$ – Maize.

Concept Maize is a C4 plant

Photosynthesis in Higher Plants in past papers

91 questions from this chapter have appeared across 26 exam years.