1. What is the shoot apex in a dicot embryo called?
A.
Radicle
B.
Plumule
C.
Hypocotyl
D.
Suspensor
Correct Answer:
Plumule
Explanation:
The plumule is the shoot apex of the embryo and develops into the shoot system of the plant.
2. Which part of the embryo develops into the future stem and leaves?
A.
Plumule
B.
Radicle
C.
Root cap
D.
Suspensor
Correct Answer:
Plumule
Explanation:
The plumule contains the embryonic shoot apex and gives rise to the stem and leaves.
3. In a monocot embryo, the shoot apex is protected by which structure?
A.
Coleorhiza
B.
Scutellum
C.
Coleoptile
D.
Endosperm
Correct Answer:
Coleoptile
Explanation:
The coleoptile is a protective sheath that covers the plumule or shoot apex in a monocot embryo.
4. What is the main function of the coleoptile in a monocot embryo?
A.
To protect the shoot apex
B.
To store food in the root
C.
To form the seed coat
D.
To absorb water from the soil
Correct Answer:
To protect the shoot apex
Explanation:
The coleoptile surrounds and protects the developing plumule as it emerges from the seed.
5. The plumule is located at which end of the embryonic axis?
A.
Root end
B.
Shoot end
C.
Seed coat end
D.
Suspensor end
Correct Answer:
Shoot end
Explanation:
The plumule is the shoot apex and is positioned at the shoot end of the embryonic axis.
6. Which structure is directly associated with the shoot apex in a monocot embryo?
A.
Coleoptile
B.
Coleorhiza
C.
Radicle
D.
Root cap
Correct Answer:
Coleoptile
Explanation:
The coleoptile is the sheath surrounding and protecting the monocot shoot apex.
7. The embryonic shoot apex gives rise primarily to which plant parts?
A.
Roots and root hairs
B.
Stem and leaves
C.
Seed coat and fruit wall
D.
Endosperm and testa
Correct Answer:
Stem and leaves
Explanation:
The shoot apex, represented by the plumule, develops into the stem and leaves of the young plant.
8. Which embryonic structure represents the young shoot?
A.
Plumule
B.
Radicle
C.
Hypocotyl
D.
Coleorhiza
Correct Answer:
Plumule
Explanation:
The plumule is the young shoot of the embryo and includes the embryonic shoot apex.
9. In a monocot embryo, the plumule is enclosed by the:
A.
Scutellum
B.
Coleoptile
C.
Coleorhiza
D.
Endosperm
Correct Answer:
Coleoptile
Explanation:
The coleoptile forms a protective covering around the plumule in monocot embryos.
10. Which statement about the shoot apex of an embryo is correct?
A.
It develops into the primary root
B.
It is represented by the plumule
C.
It forms the seed coat
D.
It becomes the suspensor
Correct Answer:
It is represented by the plumule
Explanation:
The plumule is the embryonic shoot apex and later develops into the aerial shoot system.
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