Reproduction CDS Questions

CDS Biology

Reproduction MCQ Questions


13.
Bryophyllum (the 'miracle leaf' plant) is a classic natural example of vegetative propagation occurring through:
A.
Budding from its flower
B.
Adventitious buds developing on the margins of its leaves
C.
Spore formation on the leaf surface
D.
Fragmentation of its root system
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ANSWER :
B. Adventitious buds developing on the margins of its leaves
14.
Which of the following is an ARTIFICIAL method of vegetative propagation commonly used in horticulture to propagate fruit trees like mango and rose?
A.
Binary fission in bacteria
B.
Spore formation in fungi
C.
Budding in Hydra
D.
Grafting
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ANSWER :
D. Grafting
15.
'Layering', used to propagate plants such as jasmine and bougainvillea, involves:
A.
Joining a cut stem of one plant onto the rootstock of another
B.
Bending a stem of the parent plant so part of it touches the soil and develops roots while still attached to the parent plant
C.
Growing a new plant entirely from a single cell in a culture medium
D.
Allowing a plant's fruit to fall and germinate naturally
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ANSWER :
B. Bending a stem of the parent plant so part of it touches the soil and develops roots while still attached to the parent plant
16.
Tissue culture, used to produce genetically identical plantlets from a small piece of plant tissue under sterile laboratory conditions, is also referred to as:
A.
Fertilization
B.
Micropropagation
C.
Hybridisation
D.
Pollination
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ANSWER :
B. Micropropagation
17.
Sexual reproduction is characterised by:
A.
A single parent producing offspring identical to itself
B.
Cell division without gamete formation
C.
The fusion of a male gamete and a female gamete, usually involving two parents
D.
The complete absence of any genetic material exchange
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ANSWER :
C. The fusion of a male gamete and a female gamete, usually involving two parents
18.
One of the most significant biological advantages of sexual reproduction over asexual reproduction is that it:
A.
Requires no specialised reproductive organs
B.
Always results in offspring genetically identical to the parents
C.
Always produces a much greater number of offspring in a shorter time
D.
Introduces genetic variation in the offspring, which is important for the survival and evolution of a species
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ANSWER :
D. Introduces genetic variation in the offspring, which is important for the survival and evolution of a species