Question

to sheath covering the plumule

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coleoptile

 

coleorhizza

hypocotyl

epicotyl

No correct answers

 

4) Nutritive tissue of ovule is.....................

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Ovary

 

 

5) What is emasculation?

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To remove the testicles of castrate to deprive vigour effectiveness etc.botany to remove the stamen Frome plant.

 

 

6) When pollen tube enter the ovule through micropyle is called as

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chalazogamy

mesogamy

fertilization

porogamy

 

No correct answers

 

7) Pollination by bats is called as

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chiropterophily

 

ornithophily

malacophily

entomophily

No correct answers

 

8) why the pollen grains preserved as a fossil?

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Because of the presence of sporopollenin.pollen grain has two layers.outer is exine os made up of sporopollenin.

 

 

9) Why banana is seedless?

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Because the parent banana tree is triploid 3x chromosome.

 

 

10) Zygote divide to form ........... which is implanted in uterus.

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Ball of cells to form blastocyst

 

 

11) Process egg formation is known as....................

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Ovulation

 

 

12) Corpus luteum secrete .......... & leydig cell secrete ...............

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progesterone,estrogen

estrogen,testosterone

estrogen,progesterone

progesterone,testosterone

 

No correct answers

 

13) How many spermatozoa & ovum formed from one primary spermatocyte and one primary oocyte?

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1 , 2

 

2 , 1

2 , 2

1 , 1

​

Answer 1

Answer:

3.coleoptile

4.nucelles

5.to remove pollen grains from the bisexual flower

6.porogamy

7.chiropterophily

8.they are inert due to presence of sporopollenin

10.blastocyst

11.oogenesis

12.progesterone, testosterone

13.4,1