Match vegetative propagules in COLUMN I with plants in COLUMN II and select the correct option from the codes given:

 

COLUMN I

 

COLUMN II

A.

Rhizome

a.

Bryophyllum

B.

Bulbil

b.

Eichhornia

C.

Leaf buds

c.

Ginger

D.

Offset

d.

Agave

 
Options: (A) (B) (C) (D)
1. a b c d
2. d c b a
3. c d a b
4. b a d c

Subtopic:  Asexual Reproduction |
 95%
From NCERT

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.

Hints

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.


Which of the given two statements regarding vegetative reproduction in plants is/are true?

I: It is also a type of asexual reproduction
II: The term clone is applicable to the offspring formed by vegetative reproduction in most cases.
 
1. Only I 2. Only II
3. Both I and II 4. Neither I nor II
Subtopic:  Asexual Reproduction |
 83%
From NCERT

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.

Hints

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.


The sobriquet ‘terror of Bengal’ has been given to:

1. Pistia 2. Lemna
3. Eichhornia 4. Zostera
Subtopic:  Asexual Reproduction |
 92%
From NCERT

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.

Hints

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.


advertisementadvertisement

Consider the two statements:

I: Organisms like algae and fungi shift to a sexual mode of reproduction just before the onset of adverse conditions.
II: In sexual reproduction large number of progeny can be produced in a short span of time.
 
1. Both I and II are correct and II explains I.
2. Both I and II are correct but II does not explain I.
3. I is correct and II is incorrect.
4. Both I and II are incorrect.
Subtopic:  Asexual Reproduction |
 68%
From NCERT

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.

Hints

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.


Which of the following is not always true for sexual mode of reproduction?
I. Separate sexes in the species
II. Gamete formation
III. Fertilization

1. Only I 2. Only III
3. Both I and III 4. Both II and III
Subtopic:  Sexual Reproduction |
 78%
From NCERT

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.

Hints

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.


The end of the juvenile/vegetative phase which marks the beginning of the reproductive phase can be seen easily in the higher plants when they:
1. come to the flower
2. start producing seeds
3. start producing lateral branches
4. undergo secondary growth

Subtopic:  Sexual Reproduction |
 80%
From NCERT

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.

Hints

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.


advertisementadvertisement

Identify the correct statements:

I. Clear-cut vegetative, juvenile, and senescent phases are seen only in perennial plants.
II. Neelakurinji flowers once in 12 years.
III. Bamboo flowers only once in their lifetime.
 
1. Only III
2. Only II and III
3. Only I and II
4. I, II, and III
Subtopic:  Sexual Reproduction |
 70%
From NCERT

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.

Hints

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.


Birds in captivity (as in poultry farms) :

1. lay eggs seasonally
2. can be made to lay eggs throughout the year
3. exhibit estrous cycles
4. exhibit menstrual cycles
Subtopic:  Sexual Reproduction |
 87%
From NCERT

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.

Hints

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.


Menstrual cycles occur in:
1. all animal females
2. all female mammals
3. female monkeys, apes, and humans
4. only in human females

Subtopic:  Sexual Reproduction |
 89%
From NCERT

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.

Hints

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.


advertisementadvertisement

Which of the following is the most critical event of sexual reproduction?

1. Gametogenesis 2. Gamete Transfer
3. Fertilization 4. Embryogenesis
Subtopic:  Events during Sexual reproduction |
 78%
From NCERT

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.

Hints

To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.