Question

The "Kranz anatomy" is a distinctive feature of the leaves of which group of plants?

• A. C$_3$ plants
• B. C$_4$ plants
• C. CAM plants
• D. Bryophytes

Hint:

Kranz anatomy helps C$_4$ plants efficiently fix CO$_2$ and reduces photorespiration, especially in hot and dry conditions.

Answer 1

The Correct Option is B

Concept: Kranz anatomy refers to a special structural arrangement of cells in leaves that is associated with C$_4$ photosynthesis.
Step 1: Understanding Kranz anatomy.}
In Kranz anatomy, vascular bundles are surrounded by bundle sheath cells, which in turn are surrounded by mesophyll cells forming a wreath-like structure.
Step 2: Identifying the plant group.}
This anatomical adaptation is characteristic of C$_4$ plants, where photosynthesis is divided between mesophyll and bundle sheath cells to minimize photorespiration.
Step 3: Eliminating other options.}

• C$_3$ plants – Lack Kranz anatomy.
• CAM plants – Show temporal separation, not Kranz structure.
• Bryophytes – Do not have such advanced leaf anatomy.