By looking at a plant externally can you...

By looking at a plant externally can you tell whether a plant is `C_(3) or C_(4)` ? Why and how?

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Plants which are adapted to dry tropical regions have the `C_4` pathways. Such plants are able to tolerate high temperature and exhibit marked responses towards light intensities. `C_4` plants also have a greater productivity of biomass. However `C_4` plants not show any special characteristics in external morphology.

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In C_(4) plants

Grana present in mesophyll cells and absent in bundle sheath cells.

Grana absent in mesophyll cells and present in bundle sheath cells.

Grana present in both mesophyll and bundle sheath cells.

Grand absent in both mesophyll and bundle sheath cells.

What is trne about compensation point in C_(3) and C_(4) plants?

Compensation point of `C_(3)` plants is higher

Compensation point of `C_(4)` plants is lower

Both A and B

None of these

Which of the following plants is a C_(4) plant ?

Pea

Potato

Maize

Papaya