The scutellum observed in a grain of wheat or Maize is comparable to which part of the seed in other monocotyledons ?a)Plumuleb)Cotyledonc)Endospermsd)Aleurone layerCorrect answer is option 'B'. Can you explain this answer?

Question

Answer

Scutellum is the modified cotyledon observed in a grain of wheat or maize. It lies between embryo and the endosperm

Answer

Answer

See NCERT biology page 35 last paragraph.

Answer

Explanation:
The scutellum is a specialized structure found in the seeds of grasses, such as wheat and maize. It is a single cotyledon, which is the primary embryonic leaf of a seed plant. In other monocotyledons, the scutellum is comparable to the cotyledon.

Monocotyledons:
Monocotyledons, also known as monocots, are a group of flowering plants that have one cotyledon (seed leaf) in their embryo. They belong to the class Liliopsida and include plants like grasses, lilies, orchids, and palms.

Comparison to Other Monocotyledons:
In other monocotyledons, the scutellum is comparable to the cotyledon. Let's understand the different parts of a seed in monocots and their counterparts in other monocotyledons:

1. Plumule:
- The plumule is the embryonic shoot that develops into the stem and leaves.
- In other monocotyledons, the plumule is also present, but it is not equivalent to the scutellum. The scutellum is specifically related to the cotyledon.

2. Cotyledon:
- The cotyledon is the primary embryonic leaf of a seed plant.
- In other monocotyledons, the scutellum is comparable to the cotyledon. It is a specialized structure that absorbs nutrients from the endosperm and transfers them to the developing embryo.

3. Endosperm:
- The endosperm is a tissue that surrounds the embryo and provides nutrients for its growth.
- In other monocotyledons, the endosperm is present and serves a similar function. The scutellum absorbs nutrients from the endosperm and transfers them to the developing embryo.

4. Aleurone Layer:
- The aleurone layer is a specialized tissue found in the outermost layer of the endosperm. It is rich in proteins and lipids.
- In other monocotyledons, the aleurone layer is also present and plays a role in nutrient storage and seed germination. However, it is not directly comparable to the scutellum.

Conclusion:
The scutellum observed in a grain of wheat or maize is comparable to the cotyledon in other monocotyledons. It is a specialized structure that absorbs nutrients from the endosperm and transfers them to the developing embryo.

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