Question
Download Solution PDFChalazosperm is a remnant of
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFThe correct answer is nucellus
Concept:
- The nucellus is a tissue found in the ovule of seed plants, and it serves as the central part of the ovule, providing nutrients to the developing embryo and endosperm.
- During seed development, portions of the nucellus may persist as a structure known as the chalazosperm.
- The chalazosperm is essentially a remnant of the nucellus tissue that remains in the mature seed.
Explanation:
- Endosperm: This is a tissue produced inside the seeds of most flowering plants following fertilization. It surrounds the embryo and provides nutrition in the form of starch, though it can also contain oils and protein. It is not related to chalazosperm.
- Seed coat: Also known as the testa, the seed coat is the outer protective layer of a seed. It develops from the integuments of the ovule. The seed coat's primary function is to protect the seed from physical, temperature-related, and water damage, but it is not a remnant of the nucellus.
- Nucellus: The nucellus is the central part of the ovule, providing nutrients to the developing embryo and endosperm. Chalazosperm is a remnant of this tissue.
- Integument: These are the outer layers of cells that surround the ovule. They develop into the seed coat after fertilization. The integuments are not the source of chalazosperm.
Last updated on May 30, 2025
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