Question

Plants which perform photosynthesis by these parts:
a) Ribbon like roots
b) Fleshy cylindrical stem
c) Needle like stem
d) Flattened stem
 

• A. Taeniophyllum, Opuntia, Oxalis, Dioscorea
• B. Taeniophyllum, Casuarina, Opuntia, Dioscorea
• C. Taeniophyllum, Euphorbia, Casuarina, Opuntia
• D. Casuarina, Euphorbia, Taeniophyllum, Opuntia

Hint:

Study specialized plant adaptations to understand how they exploit different parts for photosynthesis, particularly in diverse environments.

Answer 1

The Correct Option is C

Step 1: Analyzing each plant's photosynthetic adaptations.
Taeniophyllum has adapted its roots for photosynthesis, often found in orchids with minimal or no leaves. Euphorbia uses its thick, fleshy stems to perform photosynthesis, adapting to arid conditions. Casuarina, though typically known for its needle-like foliage, is often mistaken here; it’s included for its overall efficiency in photosynthesis under harsh conditions. Opuntia, with its flat stems called cladodes, efficiently performs photosynthesis. 
Step 2: Confirming the correct option.
Considering the specialized parts used in photosynthesis by each plant listed, the third option aligns perfectly with their known biological adaptations.