1. How many cotyledons are present in a monocot embryo?
A.
One
B.
Two
C.
Three
D.
Four
Correct Answer:
One
Explanation:
A monocot embryo has a single cotyledon, which is commonly called the scutellum.
2. What is the single cotyledon of a monocot embryo called?
A.
Coleoptile
B.
Scutellum
C.
Coleorhiza
D.
Epiblast
Correct Answer:
Scutellum
Explanation:
The single cotyledon in a monocot embryo is known as the scutellum.
3. Which structure protects the plumule in a monocot embryo?
A.
Scutellum
B.
Coleorhiza
C.
Coleoptile
D.
Endosperm
Correct Answer:
Coleoptile
Explanation:
The coleoptile is a protective sheath surrounding the plumule of a monocot embryo.
4. Which structure protects the radicle in a monocot embryo?
A.
Coleorhiza
B.
Coleoptile
C.
Scutellum
D.
Plumule
Correct Answer:
Coleorhiza
Explanation:
The coleorhiza is the protective sheath surrounding the radicle in a monocot embryo.
5. The embryonal axis of a monocot embryo bears which two main parts?
A.
Root and cotyledon
B.
Plumule and radicle
C.
Scutellum and endosperm
D.
Coleoptile and coleorhiza
Correct Answer:
Plumule and radicle
Explanation:
The embryonal axis includes the plumule at one end and the radicle at the other end.
6. In a typical monocot embryo, the scutellum is positioned on which side of the embryonal axis?
A.
Lateral side
B.
Upper surface only
C.
Lower surface only
D.
Outside the seed coat
Correct Answer:
Lateral side
Explanation:
In a monocot embryo, the single cotyledon or scutellum is attached laterally to the embryonal axis.
7. Which part of a monocot embryo develops into the shoot?
A.
Radicle
B.
Scutellum
C.
Plumule
D.
Coleorhiza
Correct Answer:
Plumule
Explanation:
The plumule is the embryonic shoot of the monocot embryo and is enclosed by the coleoptile.
8. Which part of a monocot embryo develops into the primary root?
A.
Plumule
B.
Radicle
C.
Scutellum
D.
Coleoptile
Correct Answer:
Radicle
Explanation:
The radicle is the embryonic root of a monocot embryo and is protected by the coleorhiza.
9. What is the shape commonly associated with the scutellum of a monocot embryo?
A.
Shield-shaped
B.
Star-shaped
C.
Thread-shaped
D.
Spherical
Correct Answer:
Shield-shaped
Explanation:
The scutellum is typically a shield-shaped single cotyledon in a monocot embryo.
10. Which structure is directly associated with the plumule in a monocot embryo?
A.
Coleoptile
B.
Coleorhiza
C.
Scutellum
D.
Radicle
Correct Answer:
Coleoptile
Explanation:
The coleoptile is the sheath that surrounds and protects the plumule in the monocot embryo.
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