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प्रश्न
Draw a diagram of the longitudinal section of a flower exhibiting germination of pollen on stigma and label (i) ovary, (ii) male germ-cell, (iii) female germ-cell and (iv) ovule on it.
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उत्तर
Following is a diagram of the longitudinal section of a pistil exhibiting germination of pollen on stigma:
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संबंधित प्रश्न
"The chromosomal number of the sexually producing parents and their offspring is the same." Justify this statement.
Fill in the following blank with suitable word :
Flowering plants reproduce by ...........method of reproduction.
Draw a neat sketch of the carpel of a flower. Mark in it stigma, style and ovary.
What is seed? What are the parts of a seed? Explain with the help of a labelled diagram.
What part is played by stamens and carpels in reproduction?
What is phototropism?
Fill in the blanks and rewrite the completed statements:
Lymph flows in _______________ direction.
Which among the following statements are true for sexual reproduction in flowering plants?
- It requires two types of gametes
- Fertilisation is a compulsory event
- It always results in formation of zygote
- Offspring formed are clones
Double fertilization is exhibited by ______
- Assertion: Primary endosperm nucleus is diploid.
- Reason: It is the product of double fertilisation.
