Botany XII Sexual Reproduction practise and sample papers for NEET

Sexual Reproduction in Flowering Plants Mock Test-7

Botany XII Sexual Reproduction

Question No:1

Assertion: Pollen tablets used as food supplement.
Reason: Pollen grains are rich in nutrient.

(A) If both the assertion and the reason are true and the reason is a correct explanation of the assertion
(B) If both the assertion and reason are true but the reason is not a correct explanation of the assertion
(C) If the assertion is true but the reason is false
(D) If both the assertion and reason are false



Question No:2

Assertion: Pollen tube enters the ovule through micropyle.
Reason: Pollen tube enters in one of synergids through filiform apparatus.

(A) If both the assertion and the reason are true and the reason is a correct explanation of the assertion
(B) If both the assertion and reason are true but the reason is not a correct explanation of the assertion
(C) If the assertion is true but the reason is false
(D) If both the assertion and reason are false



Question No:3

Assertion: Coconuts water is cellular endosperm.
Reason: White kernel of coconut is free nuclear endosperm.

(A) If both the assertion and the reason are true and the reason is a correct explanation of the assertion
(B) If both the assertion and reason are true but the reason is not a correct explanation of the assertion
(C) If the assertion is true but the reason is false
(D) If both the assertion and reason are false



Question No:4

Assertion: Most zygote divide only after certain amount of endosperm is formed.
Reason: This is an adaptation to provide assumed nutrition to the developing embryo.

(A) If both the assertion and the reason are true and the reason is a correct explanation of the assertion
(B) If both the assertion and reason are true but the reason is not a correct explanation of the assertion
(C) If the assertion is true but the reason is false
(D) If both the assertion and reason are false



Question No:5

Assertion: Embryos of monocotyledons posses only one cotyledon.
Reason: In the grass family the cotyledon is called scutellum.

(A) If both the assertion and the reason are true and the reason is a correct explanation of the assertion
(B) If both the assertion and reason are true but the reason is not a correct explanation of the assertion
(C) If the assertion is true but the reason is false
(D) If both the assertion and reason are false



Question No:6

Assertion: Parthenocarpic fruits are seedless
Reason: Parthenocarpic fruits develop without fertilization.

(A) If both the assertion and the reason are true and the reason is a correct explanation of the assertion
(B) If both the assertion and reason are true but the reason is not a correct explanation of the assertion
(C) If the assertion is true but the reason is false
(D) If both the assertion and reason are false



Question No:7

Assertion: Angiospermic can colonise is other areas easily.
Reason: Angiosperms have seeds, and seeds have better adoptive strategies for dispersal to new habitats.

(A) If both the assertion and the reason are true and the reason is a correct explanation of the assertion
(B) If both the assertion and reason are true but the reason is not a correct explanation of the assertion
(C) If the assertion is true but the reason is false
(D) If both the assertion and reason are false



Question No:8

Assertion: Seed is the basis to our agriculture.
Reason: Dehydration & dormancy of mature seed is not crucial for storage of seeds.

(A) If both the assertion and the reason are true and the reason is a correct explanation of the assertion
(B) If both the assertion and reason are true but the reason is not a correct explanation of the assertion
(C) If the assertion is true but the reason is false
(D) If both the assertion and reason are false



Question No:9

Assertion: Polyembryony is found in all angiosperm.
Reason: All angiosperm are produced by a apomixis.

(A) If both the assertion and the reason are true and the reason is a correct explanation of the assertion
(B) If both the assertion and reason are true but the reason is not a correct explanation of the assertion
(C) If the assertion is true but the reason is false
(D) If both the assertion and reason are false



Question No:10

Apomictic embryos in Citrus arise from

(A) Synergids
(B) Maternal sporophytic tissue in ovule
(C) Antipodal cells
(D) Diploid egg



Question No:11

Transfer of pollen grains from the anther to the stigma of another flower of the same plant is called

(A) Xenogamy
(B) Geitonogamy
(C) Karyogamy
(D) Autogamy



Question No:12

The scutellum observed in a grain of wheat or maize is comparable to which part of the seed in other monocotyledons?

(A) Cotyledon
(B) Endosperm
(C) Aleurone layer
(D) Plumule



Question No:13

Wind pollinated flowers are

(A) Small, brightly coloured, producing large number of pollen grains
(B) Small, producing large number of dry pollen grains
(C) Large, producing abundant nectar and pollen
(D) Small, producing nectar and dry pollen



Question No:14

Filliform apparatus is a characteristic feature of:

(A) Egg
(B) Synergid
(C) Zygote
(D) Suspensor



Question No:15

What would be the number of chromosomes of the aleurone cells of a plant with 42 chromosomes in its root tip cells?

(A) 63
(B) 84
(C) 21
(D) 42



Question No:16

Wind pollination is common in:

(A) Lilies
(B) Grasses
(C) Orchids
(D) Legumes



Question No:17

Nucellar polyembryony is reported in species of:

(A) Gossypium
(B) triticum
(C) Brassica
(D) Citrus



Question No:18

In which one of the following pollination is autogamous?

(A) Xenogamy
(B) Chasmogamy
(C) Cleistogamy
(D) Geitonogamy



Question No:19

In angiosperms, functional megaspore develops into:

(A) Embryo sac
(B) Ovule
(C) Endosperm
(D) Pollen sac



Question No:20

What is common between vegetative reproduction and apomixes?

(A) Both are applicable to only dicot plants
(B) Both bypass the flowering phase
(C) Both occur round the year
(D) Both produce progeny identical to the parent



Question No:21

Plants with ovaries having only one or a few ovules are generally pollinated by:

(A) Butterflies
(B) Birds
(C) Wind
(D) Bees



Question No:22

What is the function of germ pore?

(A) Absorption of water for seed germination
(B) Initiation of pollen tube
(C) Release of male gametes’
(D) Emergence of radical



Question No:23

Which one of the following statements is wrong?

(A) Vegetative cell is larger than generative cell
(B) Pollen grains in some plants remain viable for months
(C) Intine is made up of cellulose and pectin
(D) When pollen is shed at two-called stage, double fertilization does not take place



Question No:24

An organic substance that can withstand environmental extremes and cannot be degraded by any enzyme is:

(A) Cuticle
(B) Sporopollenin
(C) Lignin
(D) Cellulose



Question No:25

Even in absence of pollinating agents seed – setting is assure in:

(A) Commellina
(B) Zostera
(C) Salvia
(D) Fig