Sexual Reproduction in Flowering Plants Test

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Sexual Reproduction in Flowering Plants Test - 84

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Weekly Quiz Competition

Question 1
1 / -0

The pollen-pistil rejection reaction in a plant showing ametophytic selfincompatibilty usually occurs _______________.

A
On the stigma

B
In the style

C
In the ovary before entering the embryo sac

D
During game tic fusion

Solution

Correct option is A.
Question 2
1 / -0

Which one of the following is the correct sequence of procedures for site specific somatic hybridization in plants?

A
Procuring haploid cells from the parental species-isolation of protoplasts by removing the cellulose wall-protoplast fusion-regeneration of the fused cell

B
Isolation of somatic cells-extraction of protoplasts-protoplast fusion - culturing of the fused cell

C
Isolation of haploid and somatic cells extraction of their protoplasts regeneration-fusion of cells

D
Enzymatic isolation of haploid cells- isolation of protoplasts fusion of extracted protoplasts-regeneration of the fused cell

Solution

Several steps are involved in the somatic hybridization process such as-
(1) the source of protoplasts
(2) the isolation of protoplasts
(3) plating of protoplasts
(4) regeneration of plants
(5) fusion of protoplasts
(6) selection procedures
(7) identification and characterization of the somatic hybrid plants.
So, the correct option is B.
Question 3
1 / -0

When the pollen of one flower pollinates another flower on the same plant, it is called ____________.

A
Autogamy

B
Geitonogamy

C
Allogamy

D
Xenogamy

Solution

The transfer of pollen grains from the anther of one flower to the stigma of another flower of the same plant is called geitonogamy.
Thus the correct answer is option B.
Question 4
1 / -0

In citrus, adventive embryos are derived from _____________.

A
Integuments

B
Nucellus

C
Synergids

D
Zygotic embryo

Solution

B. Nucellus
The adventive embryos in Citrus are initiated in the nucellar tissue adjacent to the embryo sac in the micropylar half and incidentally from the chalaza end.
Question 5
1 / -0

Consider the following statements:
1. The seed of pea is albuminous.
2. The fruit of peach is drupe.
Which of the statements given above is/are correct?

A
1 only

B
2 only

C
Both 1 and 2

D
Neither 1 nor 2
Question 6
1 / -0

The class of seeds which must maintain a relatively high moisture content in order to remain viable are known as ______________.

A
Orthodox seeds

B
Recalcitrant seeds

C
Labyrinth seeds

D
Ex-albumirious seeds
Question 7
1 / -0

The objective of bud pollination, in which mature pollen is applied to immature non-receptive stigma generally 1 to 3 days prior to anthesis, is to ___________________.

A
Hasten the maturity of pollinated stigma

B
Increase the viability period of pollen applied

C
Promote cross-pollination between related species

D
Overcome self-incompatibility
Question 8
1 / -0

The envelope of the embryonic shoot in maize seed is called _____________.

A
Testa

B
Tegmen

C
Scutellum

D
Coleoptile

Solution

A seed develops from an ovule after fertilisation. It consists of a tough coat called testa enclosing an embryo which is made up of plumule, radicle or cotyledons. It is produced from an outer integument of the ovule.
Thus the correct answer is option A.
Question 9
1 / -0

Monocot seeds have

A
Embryo with single cotyledon.

B
Plumule also called shoot tip is present on the upper side and is protected by leaf-like covering called coleoptile.

C
Radicle is found on the lower side of the embryo.

D
All of the above

Solution

Monocot seeds have only one cotyledon or embryonic leaf in their seeds, when the seeds germinate or grow, the cotyledon becomes the first leaves of the seedling that is why monocots have only one cotyledon while dicot has two cotyledons.
In an embryo, the radicle is always present at the lower side of the embryo while the plumule is on the upper side.
The radicle is protected by coleorhiza while the plumule by coleoptile. These two are absent in dicot seeds.
So, the correct option is D.
Question 10
1 / -0

Mohologically, the spice-yielding part of turmeric is?

A
Seed

B
Root

C
Dried fruit

D
Rhizome

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Sexual Reproduction in Flowering Plants Test - 84

Result

Sexual Reproduction in Flowering Plants Test - 84

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SHARING IS CARING

Question 1

On the stigma

In the style

In the ovary before entering the embryo sac

During game tic fusion

Solution

Question 2

Procuring haploid cells from the parental species-isolation of protoplasts by removing the cellulose wall-protoplast fusion-regeneration of the fused cell

Isolation of somatic cells-extraction of protoplasts-protoplast fusion - culturing of the fused cell

Isolation of haploid and somatic cells extraction of their protoplasts regeneration-fusion of cells

Enzymatic isolation of haploid cells- isolation of protoplasts fusion of extracted protoplasts-regeneration of the fused cell

Solution

Question 3

Autogamy

Geitonogamy

Allogamy

Xenogamy

Solution

Question 4

Integuments

Nucellus

Synergids

Zygotic embryo

Solution

Question 5

1 only

2 only

Both 1 and 2

Neither 1 nor 2

Question 6

Orthodox seeds

Recalcitrant seeds

Labyrinth seeds

Ex-albumirious seeds

Question 7

Hasten the maturity of pollinated stigma

Increase the viability period of pollen applied

Promote cross-pollination between related species

Overcome self-incompatibility

Question 8

Testa

Tegmen

Scutellum

Coleoptile

Solution

Question 9

Embryo with single cotyledon.

Plumule also called shoot tip is present on the upper side and is protected by leaf-like covering called coleoptile.

Radicle is found on the lower side of the embryo.

All of the above

Solution

Question 10

Seed

Root

Dried fruit

Rhizome

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