Coleoptile & coleorhiza are _______ structures because they are developed from _______

Options

A. Triploid, endosperm
B. Diploid, Scutellum
C. Triploid, Aleurone layer
D. Diploid, Integument

Answer

**Step-by-Step Solution:**

1. **Understanding Coleoptile and Coleorhiza:**
- Coleoptile is a protective structure that covers the young shoot tip of a plant. It helps in the upward growth of the plant by protecting the delicate shoot as it emerges from the soil.
- Coleorhiza, on the other hand, is a protective sheath that surrounds the developing radicle (the embryonic root) of the plant. It ensures the protection of the radicle as it grows downward into the soil.

2. **Identifying the Ploidy Level:**
- Both coleoptile and coleorhiza are diploid structures, meaning they have two sets of chromosomes (2n). This is important as it indicates that these structures are part of the plant's embryonic development.

3. **Determining the Origin of Coleoptile and Coleorhiza:**
- Both coleoptile and coleorhiza develop from a specific part of the seed known as the scutellum. The scutellum is a tissue that provides nourishment to the developing embryo and is crucial for the formation of these protective structures.

4. **Final Answer Construction:**
- Based on the information gathered, we can fill in the blanks in the question. Coleoptile and coleorhiza are **diploid** structures because they are developed from **scutellum**.

**Final Answer:**
Coleoptile and coleorhiza are **diploid** structures because they are developed from **scutellum**.

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