Question 1

Which one of the following plants does not help in vegetative propagation by leaves?

Accepted Answer

Correct answer is C

Question 2

Among the following which one is not a method of vegetative propagation:

Accepted Answer

Sowing is related with sexual reproduction.

Question 3

After culturing the anther of a plant, a few diploid plants were found along with haploid plants. The diploid plants could have arisen from:

Accepted Answer

Correct answer is B

Question 4

Ronroducing now plants bu cells instead of seeds is known as:

Accepted Answer

Correct answer is C

Question 5

The development of a sporophyte without fertlization from the yegetative cells of the gametophyte is called:

Accepted Answer

Correct answer is D

Question 6

Genetically identical progeny is produced when an individual:

Accepted Answer

Correct answer is B

Question 7

Which one of the following is not a natural method of veqetative propagation?

Accepted Answer

Correct answer is D

Question 8

Formation of a sporophyte from gametophyte and vice tersa is termed as:

Accepted Answer

Correct answer is C

Question 9

The plant material which is widely used in the preparation of culture medium is:

Accepted Answer

Culture medium contains minerals, vitamin, 2-4% sucrose, amino acid glycine and growth regulators (or banana pulp' coconut millulyeast extract).

Question 10

Development of embry from the cells of the nucellus is called:

Accepted Answer

In adventive embryony embryo arises from diploid sporophytic cells such as nucellus or integuments (other egg) e.g., citrus.

Question 11

The development of gametophyte from the vegetative parts of the sporophyte without the intervention of spores is called:

Accepted Answer

Correct answer is D

Question 12

To got haploid callus, one can culture:

Accepted Answer

Correct answer is D

Question 13

The reason of formation of embryold from pollen grain in a tissue culture medium is:

Accepted Answer

Correct answer is D

Question 14

Which of the following propagates through leaf-tip?

Accepted Answer

Walking fern (Adiantum caudatum) because its leaf tips when come in contact with soll, form new plants as adventitious buds develop at leaf tips.

Question 15

Grafting of tissue or organ between individuals of different species is called:

Accepted Answer

Correct answer is C

Question 16

One of the plants using Foliar adventitious buds' as method for vegetative propagation is:

Accepted Answer

Foliar (on the leaf) adventitious buds are formed at place other than nodes. e.g. Bryophyllum.

Question 17

In which one pair both the plants can be vegetatively propagated by leaf pieces?

Accepted Answer

Correct answer is A

Question 18

In a type of apomixis knoun as adventive embryony, embryos develop directhy from the:

Accepted Answer

Correct answer is A

Question 19

Stem cuttings are commonly used for the propagation of:

Accepted Answer

Stem culting of at least one year old stem are ernployed in case of rose for propagation.

Question 20

Carrot is micropropagated through:

Accepted Answer

Correct answer is D

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Solutions for Class 12 Biology Important Questions

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