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.
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.
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