451.
The correct sequence in the process of development of human embryo is
A
fertilisation - zygote - cleavage - morula - blastula - gastrula
B
fertilisation - cleavage - morula - zygote - blastula - gastrula
C
fertilisation - zygote - blastula - morula - cleavage - gastrula
D
cleavage - zygote - fertilisation - morula - blastula - gastrula
Answer :
fertilisation - zygote - cleavage - morula - blastula - gastrula
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452.
The first movements of the foetus and appearance of hair on its head are usually observed during which month of pregnancy?
A
Fourth month
B
Fifth month
C
Sixth month
D
Third month
Answer :
Fifth month
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453.
Development of an unfertilized egg is cal led
A
Pathenogenesis
B
Metamorphosis
C
Gametogenesis
D
Paedogenesis
Answer :
Pathenogenesis
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454.
In rabbit, the uterus is
A
Bicornute
B
Multicornute
C
Unicornute
D
Acornute
Answer :
Bicornute
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455.
Cleidoic egg is an adaptatio for
A
Aquatic life
B
Marine life
C
Terrestril life
D
Aerial life
Answer :
Terrestril life
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456.
At the time of sexual excitaion, muscles in penis
A
Relaxed
B
Contracted
C
Collapsed
D
None of the above
Answer :
Relaxed
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457.
Eggs from ovary are releaded in
A
Oviduct
B
Kidney
C
Ureter
D
Coelom
Answer :
Coelom
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458.
In mammals the estrogens are secrted by the Grafian follicle from its
A
External theca
B
Internal theca
C
Zona pellucida
D
Corona radiata
Answer :
Internal theca
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459.
Progesterone id secreted by
A
Corpus aorta
B
Corpus albicans
C
Corpus luteum
D
Corpus callosum
Answer :
Corpus luteum
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460.
Which of the following is diploid
A
Secondary spermatocytes
B
Spermatozoa & ova
C
Spermatogonia, Oogonia, Primary spermatocyte
D
Secondary ooctyes
Answer :
Spermatogonia, Oogonia, Primary spermatocyte
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