Food material in exalbuminous seed is mainaly stored in

Options

A. Nucellus
B. Testa
C. Endosperm
D. cotyledons

Answer

To solve the question "Food material in exalbuminous seed is mainly stored in," we will follow these steps:

### Step-by-Step Solution:

1. **Understand the Types of Seeds**:
- Seeds can be classified into two main types: albuminous and exalbuminous (or non-albuminous).
- In albuminous seeds, the endosperm (the tissue that provides nutrition to the developing embryo) persists and remains present at maturity.
- In exalbuminous seeds, the endosperm is completely consumed during the development of the seed.

2. **Identify the Role of Endosperm**:
- Endosperm serves as a food reserve for the developing embryo.
- It provides essential nutrients during the seed's dormant period and during germination.

3. **Determine Where Food is Stored in Exalbuminous Seeds**:
- Since the endosperm is consumed in exalbuminous seeds, it does not serve as a food reserve.
- The food material in exalbuminous seeds is primarily stored in the cotyledons.

4. **Define Cotyledons**:
- Cotyledons are the first leaves that develop from the embryo of the seed.
- They are significant for the nutrition of the embryo, especially during germination.

5. **Eliminate Incorrect Options**:
- Testa: This is the outer protective coat of the seed and does not store food.
- Endosperm: This is not applicable in exalbuminous seeds as it is consumed during development.
- Muculus: This is part of the ovule and does not play a role in food storage in exalbuminous seeds.

6. **Conclude the Answer**:
- Therefore, the food material in exalbuminous seeds is mainly stored in the cotyledons.

### Final Answer:
The food material in exalbuminous seeds is mainly stored in the **cotyledons**.

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