Sexual Reproduction in Flowering Plants Test

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Sexual Reproduction in Flowering Plants Test - 81

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Weekly Quiz Competition

Question 1
1 / -0

Match the columns.
Colum I Column II
(a) Zoophily $$1$$. Pollination by birds
(b) Ornithophily $$2$$. Pollination by insects
(c) Entomophily $$3$$. Pollination by bats
(d) Chiropterophily $$4$$. Pollination by animals

A
a-$$3$$, b-$$2$$, c-$$1$$, d-$$4$$

B
a-$$1$$, b-$$2$$, c-$$3$$, d-$$4$$

C
a-$$4$$, b-$$1$$, c-$$2$$, d-$$3$$

D
a-$$4$$, b-$$2$$, c-$$1$$, d-$$3$$

E
a-$$4$$, b-$$2$$, c-$$3$$, d-$$1$$

Solution

•Zoophily is the pollination by animals.
•Ornithophily is the pollination by means of birds.
•Entomophily is the pollination by means of insects.
•Cheiropterophily is pollination by means of bats.
Hence, the correct match is:
a-4 , b-1 , c-2 , d-3
So, the correct answer is C.
Question 2
1 / -0

Wind pollinated flowers are

A
Small, brightly coloured, producing large number of pollen grains

B
Small, producing large number of dry pollens

C
Large producing abundant nectar and pollen

D
Small producing nectar and dry pollen

Solution

In wind pollinated flowers, non essential whorls such as calyx, corolla and bracts are not showy. The perianth lobes are reduced and flowers are small and generally devoid of scent and nectar. Inflorescence is generally pendant for swinging purpose. Plants produce a very large quantity of dusty pollen grains. Pollen grains are dry, very small in size, non sticky and unwettable so that they can be easily carried away by the wind.
So, the correct answer is B.
Question 3
1 / -0

Plants with one/ a few ovules are generally pollinated by

A
Wind

B
Bees

C
Birds

D
Butterflies

Solution

Plants which have one or few ovules are generally pollinated by wind and this pollination by wind is called anemophily. Such plants have very less ovaries so wind pollination can effectively bring the pollen in contact with the stigma. Other agents like birds, insects etc. might damage the flowers and since there are only one or few ovules, such plants prefer to get pollinated by wind.
So, the correct answer is A.
Question 4
1 / -0

Perisperm differs from endosperm in.

A
Its formation by fusion of secondary nucleus with several sperms

B
Being a haploid tissue

C
Having no reserve food

D
Being a diploid tissue

Solution

Perisperm is remnants of nucellus which is diploid (2n) but endosperm is formed by triple fusion hence is triploid (3n). Endosperm has reserve food whereas perisperm lacks it. Hence answer will be D .
Question 5
1 / -0

Which of the following is an example of a seed in which the endosperm is not completely consumed by the developing embryo?

A
Gram

B
Bean

C
Castor

D
Pea

Solution

Seeds in which endosperm is completely consumed by the growing embryo, are called exalbuminous or non endospermous seeds. Examples are Pea, Bean, Gram.
Seeds in which endosperm is not completely consumed by the growing embryo and is persistent, are called albuminous or endospermous seeds. Example is Castor.
So, the correct answer is C.
Question 6
1 / -0

Which of the following finds application in hybrid seed industry?

A
Apomixis

B
Parthenocarpy

C
Parthenogenesis

D
Polyembryony
Question 7
1 / -0

Apomictic embryos in citrus arise from

A
Maternal sporophytic tissue in ovule

B
Antipodal cells

C
Diploid cells

D
Synergids
Solution
Correct Option: A

Explanation:
- Apomixis is the formation of new individuals of seeds with embryo growing directly from diploid cells of nucellus or integument (as in Mango and Orange), diploid egg or some other gametophytic cell (as in Apple, Rubus, etc.).
- In citrus, apomictic embryos develop from maternal sporophytic tissue like nucellus and integuments in ovule.
- This type of embryony is called adventive embryony.
Hence, apomictic embryos in citrus arise from maternal sporophytic tissue in ovule.
Question 8
1 / -0

Entomophilous flowers are related to

A
Honey bees

B
Wind

C
Water

D
Hairy Mammals

Solution

Entomophilous flowers are the flowers that are pollinated by insects. From all the options given in the question, honey bees are the insects. So, entomophilous flowers are related to honey bees as honey bees pollinate them.
So, the correct answer is A.
Question 9
1 / -0

Choose the correct options for statements P, Q, R in relevance to grass.

Statement P: Flowers possess attractive color and fragrance.
Statement Q: Pollen grains are small, dry and light in weight.
Statement R: Grass is air pollinated plant.

A
Both P and Q are true, R is correct explanation of Q

B
P is true and Q is false, R is correct explanation of P

C
P is false and Q is true, R is correct explanation of Q

D
Both P and Q are false, R has no relation with P and Q

Solution

Grass belongs to family poaceae that do not possess attractive fragrant flowers but has small light pollen grains and are pollinated by air. They are anemophilous.
So, the correct option is C.
Question 10
1 / -0

Animal vectors are required for pollination in

A
Mulberry

B
Cucumber

C
Maize

D
Vallisneria

Solution

• Mulberry is pollinated by wind.
• Cucumber is pollinated by bees.
• Maize is pollinated by wind.
• Vallisneria is pollinated by water.
Hence, animal vector is required for the pollination of Cucumber. So, the correct answer is B.

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Re-Attempt Weekly Quiz Competition

	Colum I		Column II
(a)	Zoophily	$$1$$.	Pollination by birds
(b)	Ornithophily	$$2$$.	Pollination by insects
(c)	Entomophily	$$3$$.	Pollination by bats
(d)	Chiropterophily	$$4$$.	Pollination by animals

Sexual Reproduction in Flowering Plants Test - 81

Result

Sexual Reproduction in Flowering Plants Test - 81

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SHARING IS CARING

Question 1

a-$$3$$, b-$$2$$, c-$$1$$, d-$$4$$

a-$$1$$, b-$$2$$, c-$$3$$, d-$$4$$

a-$$4$$, b-$$1$$, c-$$2$$, d-$$3$$

a-$$4$$, b-$$2$$, c-$$1$$, d-$$3$$

a-$$4$$, b-$$2$$, c-$$3$$, d-$$1$$

Solution

Question 2

Small, brightly coloured, producing large number of pollen grains

Small, producing large number of dry pollens

Large producing abundant nectar and pollen

Small producing nectar and dry pollen

Solution

Question 3

Wind

Bees

Birds

Butterflies

Solution

Question 4

Its formation by fusion of secondary nucleus with several sperms

Being a haploid tissue

Having no reserve food

Being a diploid tissue

Solution

Question 5

Gram

Bean

Castor

Pea

Solution

Question 6

Apomixis

Parthenocarpy

Parthenogenesis

Polyembryony

Question 7

Maternal sporophytic tissue in ovule

Antipodal cells

Diploid cells

Synergids

Solution

Question 8

Honey bees

Wind

Water

Hairy Mammals

Solution

Question 9

Both P and Q are true, R is correct explanation of Q

P is true and Q is false, R is correct explanation of P

P is false and Q is true, R is correct explanation of Q

Both P and Q are false, R has no relation with P and Q

Solution

Question 10

Mulberry

Cucumber

Maize

Vallisneria

Solution

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