Biology
The single cotyledon of a maize grain is called:
- Hypocotyl
- Scutellum
- Coleorhiza
- Embryo
Seeds
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Answer
Scutellum
Reason — The single cotyledon of a maize grain is called Scutellum.
The hypocotyl is the part of the embryo axis between the cotyledons (or cotyledon and radicle). It is not a cotyledon itself. The coleorhiza is a protective sheath covering the radicle in monocot seeds like maize. The embryo is the whole young plant inside the seed, which includes cotyledon, radicle, plumule, etc., not just the cotyledon.
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The distinct whitish oval scar on the concave side of the seed is termed as :
- Scutellum
- Micropyle
- Hilum
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The outermost hard brownish layer of the seed coat is:
- Testa
- Tegmen
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The part of an embryo which develops into root is
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- Plumule
- Coleoptile
- Radicle