Sexual Reproduction in Flowering Plants Test

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Sexual Reproduction in Flowering Plants Test - 101

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Question 1
1 / -0

Wind pollinated flowers are

A
Small, scented and colourless

B
Small, non-scented and colourless

C
Big, scented and coloured

D
Big, non-scented and colourless

Solution

Wind-pollinated flower shows large production of pollen grains, and their anther is well exposed. The flowers are not attractive and scent emitting and they are a feathery and sticky stigma. The pollens of wind-pollinated flowers are light and non-sticky so that they can be transported in wind currents. These flowers do not possess nectar.

So the correct option is 'Small, non-scented and colorless'.
Question 2
1 / -0

Match biotic vectors in List I with the pollinating term in List II and select the correct answer using the codes given the lists.
List-I List-II
a. Insects $$1$$. Ornithophily
b. Birds $$2$$. Chiropterophily
c. Bats $$3$$. Entomophily
d. Humming birds $$4$$. Hydrophily

A
A-$$3$$, B-$$1$$, C-$$2$$, D-$$1$$

B
A-$$1$$, B-$$2$$, C-$$3$$, D-$$4$$

C
A-$$2$$, B-$$4$$, C-$$3$$, D-$$1$$

D
A-$$4$$, B-$$2$$, C-$$3$$, D-$$1$$
Solution
- Pollination in which the pollen is carried on an insect is called entomophily, and the flower is called entomophilous.
- Pollination of a flowering plant through the birds is called ornithophily.
- Chiropterophily is the pollination of plants by bats. Bat pollination is most common in tropical and desert areas that have many night-blooming plants. Just like bees and birds that pollinate, nectar-consuming bats have evolved ways to find and harvest sweet liquid.
- Humming birds help in the pollination of flowering plants, i.e., ornithophily.
So, the correct answer is option A.
Question 3
1 / -0

Cotyledons and testa respectively are edible parts in

A
Walnut and coconut

B
Coconut and mango

C
Cashewnut and litchi

D
Groundnut and pomegranate
Solution
1. Endosperm the white fleshy part commonly called as meat is the edible part of the coconut.
2. Cotyledons are the edible part in walnut and cashew nuts.
3. Mesocarp is the edible part of mango.
4. Aril is the edible part of litchi.
5. Cotyledon and testa are edible in groundnut and pomegranate.
So the correct option is 'Groundnut and pomegranate'.
Question 4
1 / -0

Emasculation is removal of _______.

A
Stigma from bisexual flower

B
Calyx from unisexual flower

C
Calyx from bisexual flower

D
Stamens from bisexual flower

E
Corolla from unisexual flower

Solution

The process of removing anther using forceps from a bisexual flower to release pollen grains during the hybridization process is called emasculation. Stamens are the male reproductive organs of flowering plants consist of anther and filament. This is done in the bisexual flower because after emasculation only the female reproductive parts of the flower remain in it.
So, the correct option is 'Stamens from bisexual flower'.
Question 5
1 / -0

The association between ants and some members of family rubiaceae is

A
Ornithophily

B
Entomophily

C
Myrmecophily

D
Anemorphily

Solution

Myrmecophily is the symbiotic relationship of ants and plants in which the ants get food and place to stay while plants get a pollinator or a method of seed diepersal. It is widely used by family Rubiaceae which is a family of coffee.
So the correct option is 'Myrmecophily'.
Question 6
1 / -0

Consider the following statements.
Apomixis is phenomenon in which.
a. Fertilization occurs regularly
b. Fertilization does not occur at all
c. Embryo is formed directly from an egg or male gamete
d. Formed embryo may be haploid or diploid
Which of the statements is/are correct?

A
$$1$$ alone

B
$$1$$ and $$3$$

C
$$1, 2$$ and $$3$$

D
$$2, 3$$ and $$4$$

Solution

The answer is option D.
Apomixis can be defined as the replacement of the normal sexual reproduction by asexual reproduction. Apomixis mimics sexual reproduction without fertilization. The seed of the plant is developed without fertilisation. It can be observed in blackberries, mat grass, hawk weeds and many other. It can be useful in forming hybrid seeds. There are several ways of development of apomitic seeds. In some species , the diploid egg cell is formed without reduction division and develops into the embryo without fertilisation.
Question 7
1 / -0

Match List I (Phenomenon) with List II (Scientist) and I select the correct answer using the code given below I the lists:
List I List II
A. Fertilization 1. Treub
B. Triple fusion 2. Camerarius
C. Pollination 3. Strasburger
D. Chalazogamy 4. Nawaschin

A
A-1, B-2, C-4, D-3

B
A-3, B-4, C-2, D-1

C
A-3, B-2, C-4, D-1

D
A-1, B-4, C-2, D-3

Solution

Correct option is B.
Strasburger in 1884 showed how the fertilization takes place in the plants.
Treub in 1981 first observed the chalazogamy fertilization in Casuarina plant.
The triple fusion or formation of endosperm was first discovered by Nawaschin and Grignard.
Camerarius first discovered that plants can reproduce sexually
Question 8
1 / -0

Myrmecophily is characterised by

A
Plants harbouring ants

B
Plants storing food underground

C
Plants imitating the habit of animals

D
Plants with small leaves

Solution

Myrmecophily is the symbiotic relationship between plant and ants in which plants provide food to plant or place to hide eggs and ants help them in pollination.
So the correct option is 'Plants harbouring ants'
Question 9
1 / -0

Genes related to module formation are present in

A
Legume plant and rhizobium

B
Legume plant only

C
Rhizobium only

D
None of these

Solution

Root nodules are found on the roots of plants, primarily legumes, that form a symbiosis with nitrogen-fixing bacteria. Under nitrogen-limiting conditions, capable plants form a symbiotic relationship with a host-specific strain of bacteria known as rhizobia. Nitrogen fixation in the nodule is very oxygen sensitive. Legume nodules harbour an iron-containing protein called leghaemoglobin, closely related to animal myoglobin, to facilitate the diffusion of oxygen gas used in respiration. They contain symbiotic bacteria called rhizobia within the nodules, producing nitrogen compounds that help the plant to grow and compete with other plants.
So the correct answer is 'Legume plant and rhizobium'.

Question 10

1 / -0

Match the parts in Column A with the flowers or parts of flower in Column B.

Column A	Column B
(a) Polyadelphous	(i) Polypetalous
(b) Pollen grains	(ii) Calyx, corolla
(c) Free petals	(iii) Nectar
(d) Non-essential	(iv) Bombax
(e) Sweet fragrant fluid	(v) Pollen sac

a-v, b-iv, c-iii, d-ii, e-i

a-i, b-ii, c-iii, d-iv, e-v

a-iv, b-v, c-i, d-ii, e - iii

a-ii, b-v, c-i, d-iv, e-iii

Solution

Free petals - Polypetalous

Polyadelphous - Bombax

Pollen grains - Pollen sac

Non-essential - Calyx, corolla

Sweet fragrant fluid - Nectar

So, the correct answer is 'a-iv, b-v, c-i, d-ii, e - iii'

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Re-Attempt Weekly Quiz Competition

List-I	List-II
a. Insects	$$1$$. Ornithophily
b. Birds	$$2$$. Chiropterophily
c. Bats	$$3$$. Entomophily
d. Humming birds	$$4$$. Hydrophily

	List I		List II
A.	Fertilization	1.	Treub
B.	Triple fusion	2.	Camerarius
C.	Pollination	3.	Strasburger
D.	Chalazogamy	4.	Nawaschin

Sexual Reproduction in Flowering Plants Test - 101

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Sexual Reproduction in Flowering Plants Test - 101

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Question 1

Small, scented and colourless

Small, non-scented and colourless

Big, scented and coloured

Big, non-scented and colourless

Solution

Question 2

A-$$3$$, B-$$1$$, C-$$2$$, D-$$1$$

A-$$1$$, B-$$2$$, C-$$3$$, D-$$4$$

A-$$2$$, B-$$4$$, C-$$3$$, D-$$1$$

A-$$4$$, B-$$2$$, C-$$3$$, D-$$1$$

Solution

Question 3

Walnut and coconut

Coconut and mango

Cashewnut and litchi

Groundnut and pomegranate

Solution

Question 4

Stigma from bisexual flower

Calyx from unisexual flower

Calyx from bisexual flower

Stamens from bisexual flower

Corolla from unisexual flower

Solution

Question 5

Ornithophily

Entomophily

Myrmecophily

Anemorphily

Solution

Question 6

$$1$$ alone

$$1$$ and $$3$$

$$1, 2$$ and $$3$$

$$2, 3$$ and $$4$$

Solution

Question 7

A-1, B-2, C-4, D-3

A-3, B-4, C-2, D-1

A-3, B-2, C-4, D-1

A-1, B-4, C-2, D-3

Solution

Question 8

Plants harbouring ants

Plants storing food underground

Plants imitating the habit of animals

Plants with small leaves

Solution

Question 9

Legume plant and rhizobium

Legume plant only

Rhizobium only

None of these

Solution

Question 10

a-v, b-iv, c-iii, d-ii, e-i

a-i, b-ii, c-iii, d-iv, e-v

a-iv, b-v, c-i, d-ii, e - iii

a-ii, b-v, c-i, d-iv, e-iii

Solution

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