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1
Some plants like _______________________ can be grown by the method of tissue culture.
Orchids
Chrysanthemum
Asparagus
All of these
2
Some plants like _________________, chrysanthemum and asparagus can be grown by the method of tissue culture.
Cactus
Aloe Vera
None of these .
3
In _________________ reproduction, the offspring is produced by a single parent with or without the involvement of gamete formation.
Sexual
Asexual
Both (a) and (b) are correct.
None of these.
4
In ____________________ reproduction, the offspring is produced by two parents involving fusion of male and female gametes.
5
Asexual reproduction takes place through fragmentation in ___________________________ .
Spirogyra
Ferns
Yeast
6
Tissue culture is used for rapid vegetative propagation as well as for the production of disease-free and pest-resistant plants. It is also known as ___________________.
Vegetative propagation
Micro propagation
Macro -propagation
7
Tuberous roots of __________,_____________ potato can be set for multiplication. These roots have food stored in them.
Carrot,chili
Radish,potato
Dahlia ,sweet potato
8
Spores are protected by ___________________ when conditions are unfavorable .
Thick walled
Thin walled
Smooth walled
9
Which of the following are the function of reproduction ?
Maintains life on the Earth.
Enables continuity of the species.
Creates variations among populations.
All of these.
10
Which of the following are correct ?
(a) Spores are single celled or several celled reproductive bodies that are cylindrical in shape.
(b) They are protected by thick wall when conditions are unfavorable.
Only (a) is correct .
Only (b) is correct .
Both (a) and (b) is correct .
11
Which of the following are correct :
(a) Reproduction maintains life on the Earth.
(b) Reproduction enables continuity of the species.
Only (a) is correct.
Only (b) is correct.
12
Which of the following are correct about vegetative propagation in plants?
(a) Plants such as grass have horizontal stems growing parallel to the ground, almost touching it.
(b) Vegetative parts such as root, stem and leaf can be used to produce new plants. It is known as vegetative reproduction.
13
(a) Reproduction is a biological process in which an organism gives rise to young ones or offsprings similar to itself.
(b) In asexual reproduction, the offspring is produced by a single parent with or without the involvement of gamete formation.
14
(b) Reproduction maintains life on the Earth.
(c) Reproduction enables continuity of the species.
Only (a) and (b) are correct.
Only (b) and (c) are correct.
Only (a) and (c) are correct.
15
(a) In asexual reproduction, the offspring is produced by a single parent with or without the involvement of gamete formation.
(b) In sexual reproduction, the offspring is produced by two parents involving fusion of male and female gametes.
(c) In sexual reproduction, the offspring is produced by a single parent with or without the involvement of gamete formation.