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1
Hydra reproduces asexually by growing buds from its body this is called _________________ .
Fragmentation
Budding
Vegetative propagation
None of these .
2
Rhizomes have buds from which outgrowths are produced which give rise to new plants _________________ .
Ginger
Strawberry
Mint
3
Several factors, which determine how an organism reproduces are ___________________________.
The organism's habitat.
Its internal physiology.
Environmental conditions.
All of these.
4
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.
5
Vegetative reproduction is a useful method for growing plants which do not produce _____________________ .
Seeds
Root
Stem
6
Spores are released when case bursts open and grow into ____________________ .
New plant
Embryo
Zygote
7
Which of the following are correct :
(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.
Only (a) is correct.
Only (b) is correct.
8
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.
Only (a) is correct .
Only (b) is correct .
Both (a) and (b) is correct .
9
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.
10
Which of the following are correct about fragmentation ?
(a) It is found in algae like spirogyra, fucus. In this process adult organism breaks up into two or more pieces called fragments.
(b) Each fragment grows up to become a new plant. Multicellular organisms with simple body organistion can divide or reproduce by fragmentation.
(c) Organisms with complex structure cannot undergo cell by cell division. It is a kind of sexual reproduction.
Only (a) and (b) is correct .
Only (b) and (c) is correct .
Only (a) and (c) is correct .
All of these .