1.
Which of the following type of culture is used in some interspecific crosses, where endosperm of developing hybrid seed degenerates very early
A.
Meristem culture
B.
Shoot tip culture
C.
Embryo culture
D.
Anther culture
Answer :
Embryo culture
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2.
Life span of worker honey bee
A.
30 days
B.
15 days
C.
45 days
D.
10 days
Answer :
45 days
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3.
D.D.T. is
A.
Carbamate
B.
Organophosphate
C.
Organochlorine
D.
Triazine
Answer :
Organochlorine
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4.
What is the potential use of guayule (Pathenioum argenatum
A.
Source of protein rich seed
B.
Source of high quality edible oil
C.
Source of high quality rubber
D.
Source of liquid wax
Answer :
Source of high quality rubber
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5.
Fishes reared in culture fishery in India are
A.
Salmon and Rohu
B.
Salmon and Catle
C.
Catla and Magur
D.
Rohu and Catla
Answer :
Rohu and Catla
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6.
Which of the following species of silkworm are found in India
A.
Bombyx mori
B.
Antherea paphia
C.
Keira
D.
All of the above
Answer :
Bombyx mori
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7.
Natural insecticide obtained from
A.
Azadiracta indica
B.
Derris elliptica
C.
Chrysanthemum cinerari folium
D.
All of the above
Answer :
All of the above
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8.
Haploid plants are preferred over diploids for mutation study because in haploids
A.
recessive mutation expresses immediately
B.
induction of mutations is easier
C.
culturing is easier
D.
dominant mutation expresses immediately
Answer :
recessive mutation expresses immediately
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9.
Pules belong to
A.
Malvaceae
B.
Gramineae
C.
Cruciferae
D.
Leguminosae
Answer :
Leguminosae
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10.
Compared to a bull a bullock is docile because of
A.
higher levels of cortisone
B.
lower levels of blood testosterone
C.
lower levels of adrenaline/noradrenaline in its blood
D.
higher levels of thyroxine
Answer :
lower levels of blood testosterone
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