Some stages of development of dicot embryo are given below :-

a. Proembryo

b. Globular stage

c. Heart shape

d. Mature embryo

Arrange the given stages in correct sequence?

1. a, b, c, d

2. c, d, b, a

3. a, c, d, b

4. b, d, c, a

Subtopic:  Embryo |
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In a cereal grain, the single cotyledon of the embryo is represented by:

1. coleorhiza

2. scutellum

3. prophyll

4. coleoptiles

Subtopic:  Embryo |
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Go through the given diagram of a typical dicot embryo. In which of the following all the 3 parts labelled as A, B, C with their respective functions are correctly identified?

A B C
1. Plumule,
shoot system
formation
Radicle,
root system
formation
Hypophysis,
formation of
radicle
2. Plumule,
shoot system
formation
Radicle,
root system
formation
Cotyledon,
food storage
3. Radicle,
root system
formation
Plumule,
shoot system
formation
Cotyledon,
food storage
4. Radicle,
root system
formation
Plumule,
shoot system
formation
Endosperm,
food storage
Subtopic:  Embryo |
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The lower end of the embryonal axis in maize has the radicle and root cap enclosed in

1. An extension of scutellum

2. A structure called coleoptile

3. A differentiated sheath

4. A structure called coleorrhiza

Subtopic:  Embryo |
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Identify the parts labelled A, B, C and D in the given figure and select the correct option.

A B C D
1. Scutellum Epiblast Coleoptile Coleorhiza
2. Scutellum Coleorhiza Coleoptile Epiblast
3. Scutellum Coleoptile Coleorhiza Epiblast
4. Epiblast Coleoptile Coleorhiza Scutellum
Subtopic:  Embryo |
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The embryo of a grass seed is enclosed by two protective sheaths, a(n) _________, which covers the young shoot, and a(n) __________, which covers the young root.

1. plumule; radical

2. hypocotyl; picotyls

3. coleoptile; coleorrhiza

4. scutellum; replum

Subtopic:  Embryo |
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Epicotyl has a shoot apex and a few leaf primordial enclosed in a hollow foliar structure called as the:

(1) Coleoptile

(2) Coleorhiza

(3) Scutellum

(4) Perisperm

Subtopic:  Embryo |
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In a typical dicotyledonous embryo, the cylindrical portion below the level of cotyledons is _________ that terminates at its lower and in the ____________

1. Epicotyl, plumule

2. Epicotyl, radicle

3. Hypocotyl, radicle

4. Hypocotyl, plumule

Subtopic:  Embryo |
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During the development of typical embryo sac from the functional megaspore

1. The free nuclear division takes places

2. Cytokinesis is present after each karyokinesis

3. Nuclear divisions are followed immediately by cell wall formation

4. Cell walls are laid down after the 4-nucleated stage

Subtopic:  Embryo |
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Diagram given below shows stages in embryogenesis in a typical dicot (Capsella). Identify structures A to D respectively:



1. Suspensor, Radicle, Plumule, Cotyledons
2. Hypophysis, Radicle, Plumule, Cotyledons
3. Suspensor, Plumule, Radicle, Cotyledons
4. Suspensor, Radicule, Plumule, Hypocotyls

Subtopic:  Embryo |
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