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Biology 12 Ch-27 BIOLOGY AND HUMAN WELFARE- 31
1.
Due to which of the following, varieties of sugar beet have been developed?
Husbandry
Hybridization
Backcross
Selection
2.
Due to which of the following, varieties of onion have been developed?
Selection
Husbandry
Hybridization
Backcross
3.
Due to which of the following, varieties of tomato have been developed?
Husbandry
Hybridization
Selection
Backcross
4.
Due to which of the following, varieties of fruits have been developed?
Backcross
Husbandry
Hybridization
Selection
5.
What is the exhibition of superiority of the hybrid over both of its parents in one or more traits called?
None of these
Hybridized
Heterosis
Hybrid
6.
What is the exhibition of superiority of the hybrid over both of its parents in one or more traits called?
Hybridized
None of these
Hybrid
Hybrid vigour
7.
Which of the following plants can propagate vegetatively?
Guava
All of these
Mango
Rose
8.
Upon which of the following, hybrid vigour is based?
Pest resistance
All of these
Disease resistance
Ability to give higher yield
9.
Which of the following plants can propagate vegetatively?
Dahlias
All of these
Chrysanthemum
Mango
10.
Upon which of the following, heterosis is based?
All of these
Pest resistance
Ability to give higher yield
Disease resistance
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