Question

In an angiospermic embryo, upper swollen suspensor cell towards the micropyle, functions as________.

• A. haustorium
• B. hypophysis
• C. epicotyl
• D. hypocotyl

Hint:

Keyword: Suspensor $\rightarrow$ Nutrition $\rightarrow$ Haustorium Always link suspensor with nutrient absorption.

Answer 1

The Correct Option is A

Concept: In angiosperms, the zygote divides to form an embryo and a suspensor. The suspensor plays an important role in early embryo development.
• The suspensor pushes the embryo into the endosperm for nutrition.
• The uppermost suspensor cell, located near the micropyle, becomes enlarged and specialized.
• This cell functions as a haustorium, helping in absorption of nutrients from surrounding tissues.

Step 1: Understand suspensor structure.
The suspensor consists of several cells arranged in a filamentous manner, connecting the embryo to maternal tissue.

Step 2: Identify the special cell.
The cell near the micropyle becomes swollen and functions in nutrient absorption.

Step 3: Match with function.
• Haustorium: Absorbs nutrients (correct)
• Hypophysis: Gives rise to root apex
• Epicotyl: Embryonic shoot region
• Hypocotyl: Region between root and shoot

Step 4: Conclusion.
Thus, the upper swollen suspensor cell acts as a haustorium. Final Answer: Option (A)