FREE NEET Biology Practice MCQ Test: Sexual Reproduction In Flowering Plants Exercise 3 Questions Answers With Detailed Explanations [PDF]

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Sexual Reproduction In Flowering Plants Topic Based

Question : 1

Wind pollination is common in

Answer: (b)

Anemophily is pollination of a flower in which the pollen is carried by the wind. Examples of anemophilous flowers are those of grasses and conifers.

Question : 2

Which one of the following statements is correct ?

Answer: (d)

Question : 3

Perisperm is

Answer: (c)

Perisperm is persistent nucellus. Endosperm formation is accompanied by degeneration of nucellus.

Question : 4

Which of the following pair has haploid structures?

Answer: (c)

Question : 5

How many meiotic division are required for the formation of 100 functional megaspores?

Answer: (a)

Megaspore mother cell (MMC) undergoes meiosis to form four haploid cells (called megaspores) and the process of formation is known as megasporogenesis. The MMC undergoes meiotic division results in the production of four megaspores 100 functional megaspores are produced by 100 MMC, since three out of four megaspores degenerate in each case.

Question : 6

Pollen tablets are available in the market for

Answer: (b)

Pollen grains are believed to be rich in nutrients (protein 7-26 % carbohydrates 24-48%, fats 0.9-14.5%). They are taken as tablets or syrups to improve health. They also enhance performance of athletes and race horses.

Question : 7

Which one of the following may require pollinators, but is genetically similar to autogamy?

Answer: (b)

Geitonogamy involves transfer of the pollen from one flower of a plant to the stigma of another flower of the same plant, e.g., in maize. As the pollen has to move from one flower to another flower, it requires a pollinating agent. Yet it is genetically similar to autogamy, as both the flowers of the plant, share the same genotype of the plant.

Question : 8

Read the following statements.

  1. Generative cell is bigger and contains abundant food reserve.
  2. Vegetative cell is small and floats in the cytoplasm of the generative cell.
  3. In angiosperms various stages of reductional divisions can be studied in young anthers.
  4. Hilum represents the junctions between ovule and funicle.

Choose the option with correct set of statements.

Answer: (d)

Statements III and IV are correct. Statements I and II are incorrect and can be corrected as

  • n a mature pollen grain vegetative cell is bigger and has abundant food reserve and a large irregular shaped nucleus.
  • The generative cell is small and floats in the cytoplasm of vegetative cell.

It is spindle-shaped with dense cytoplasm and nucleus.

Question : 9

Proximal end of the filament of stamen is attached to the

Answer: (c)

Question : 10

A particular species of plant produces light, non-sticky pollen in large numbers and its stigmas are long and feathery. These modifications facilitate pollination by

Answer: (c)

Wind pollination requires light and non-sticky pollen grains so that, they can be transported with wind currents and its stigma are long and feathery to easily trap airborne pollen grains.

Question : 11

Amorphophallus provide floral rewards in the form of

Answer: (b)

Question : 12

Statement 1 :
The two cotyledons in seed are embryonic leaves.
Statement 2 :
The embryo contains radicle and plumule.

Answer: (c)

In angiosperms, cotyledons are embryonic leaves. Embryo also has radicle and plumule which gives rise to root and shoot respectively.

Question : 13

Match Column -I with Column - II.

Column I Column II
A. Ovary 1. Groundnut, mustard
B. Ovule2. Guava, orange, mango
C. Wall of ovary3. Pericarp
D. Fleshy fruits4. Seed
E. Dry fruits 5. Fruit

Answer: (a)

Question : 14

To achieve 3-celled stage in angiosperms, which cell of the pollen grain divides to form two male gametes ?

Answer: (a)

The generative cell of a pollen grain divides to form two male gametes in order to achieve the 3-celled stage in angiospermic plants.

Question : 15

Typical angiosperm anther is

Answer: (a)

Question : 16

As a pollen tube grows into the female organ, the nucleus that enters the synergid first is called the

Answer: (b)

Question : 17

Function of filiform apparatus is to :

Answer: (d)

Question : 18

Which one of the following may require pollinators, but is genetically similar to autogamy ?

Answer: (d)

Question : 19

What are the parts A, B, C, D and E in this figure? A B C D E

sexual-reproduction-in-flowering-plants-neet-mcq-8-24-134

Answer: (a)

Question : 20

From megasporocyte to egg cell, what processes are required?

Answer: (a)

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