In Ricinus, the outer white papery convering of endosperm is

Options

A. Perisperm /tegmen
B. Tigellum
C. Strophiole
D. Exo-endosperm

Answer

**Step-by-Step Solution:**

1. **Understanding the Structure of Ricinus (Castor Seed):**
- Ricinus is commonly known as the castor seed plant. It is a flowering plant and its seeds are classified as endospermic.

2. **Identifying Seed Parts:**
- The castor seed consists of several parts:
- **Testa:** This is the outer layer of the seed coat.
- **Tegmen:** This is the inner layer of the seed coat.
- **Endosperm:** This is the tissue that provides nourishment to the developing embryo.
- **Embryo:** This is the young plant that will develop from the seed.

3. **Focusing on the Question:**
- The question specifically asks for the outer white papery covering of the endosperm in Ricinus.

4. **Identifying the Correct Term:**
- The outer white papery covering of the endosperm is referred to as the **Tegmen**. However, it is also noted that the term **Perisperm** can be used interchangeably in some contexts.

5. **Choosing the Correct Option:**
- Based on the options provided:
- Perisperm or Tegmen
- Tegulum
- Strophil
- Exo Endosperm
- The correct answer is **Perisperm** (option one) as it refers to the outer covering of the endosperm.

**Final Answer:**
The outer white papery covering of endosperm in Ricinus is **Perisperm**.

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