Question

Seed coat is derived from

• A. Nucellus
• B. Embryo
• C. Endosperm
• D. Testa

Hint:

Integuments \( \rightarrow \) Seed Coat.
Outer Integument \( \rightarrow \) Testa.
Inner Integument \( \rightarrow \) Tegmen.

Answer 1

The Correct Option is D

Step 1: Understanding the Question:
The question asks about the origin or identifying part of the seed coat in a botanical context. Usually, the seed coat develops from the integuments of the ovule.

Step 2: Detailed Explanation:

• Origin: After fertilization, the ovule matures into a seed. The integuments (outer and inner) of the ovule transform into the protective layers of the seed.

• Composition: The seed coat is typically composed of two layers:
- Testa: The outer, usually hard and protective layer, derived from the outer integument.
- Tegmen: The inner, thinner layer, derived from the inner integument.

• Evaluating Options:
- Nucellus (A): Usually disappears or becomes perisperm.
- Embryo (B): It is the "baby plant" inside the seed, not the coat.
- Endosperm (C): It is the food storage tissue inside the seed.
- Testa (D): Since "integuments" is not an option, and the Testa is the primary component of the seed coat, it is the most appropriate identifying term.
Final Answer:
The seed coat is essentially represented by the testa (and tegmen).