Biology
Which of the following statements holds true for a maize grain?
- The maize grain is a ripened ovary containing a single seed.
- The fruit wall and seed coat are fused together.
- The outermost layer of the endosperm is rich in protein.
- All of the above.
Seeds
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Answer
All of the above
Reason — Maize is monocot with fruit wall and seed coat fused together.
Maize grain is a caryopsis, a type of dry fruit in which the ovary wall develops into the fruit wall and encloses a single seed. In maize, the pericarp (fruit wall) and seed coat (testa) are completely fused, forming a single protective covering. The outermost layer of the endosperm, called the aleurone layer, is rich in protein and helps during germination.
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Related Questions
The outermost hard brownish layer of the seed coat is:
- Testa
- Tegmen
- Epicotyl
- Aleurone layer
The part of an embryo which develops into root is
- Coleorhiza
- Plumule
- Coleoptile
- Radicle
Seema observed different kinds of seeds which can be categorised on the basis of certain features like cotyledons, endosperm, etc. She recorded her observations as follows :
P- Seeds are dicotyledonous and exalbuminous.
Q- Seeds are monocotyledonous and albuminous.
R- Cotyledons are rich in protein.
S- Stored food material is rich in starch.
Which of her above observations match with bean seeds?
- R and Q
- Q and S
- S and P
- P and R
Seeds germinate in two ways. The type in which the cotyledons remain underground is called (P) …………… germination. During this type of germination, the (Q) …………… elongates faster.
- P — Epigeal, Q — Hypocotyl
- P — Epigeal, Q — Epicotyl
- P — Hypogeal, Q — Epicotyl
- P — Hypogeal, Q — Hypocotyl