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Why do internodal segments of sugarcane ...

Why do internodal segments of sugarcane fail to propagate vegatatively even when they are in contact with dump soil?

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The site of origin of plantlets is node which when come in contact with damp soil, produce roots and new plants. New plants do not arise from the internodes or internodal segments of sugarcane
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TRUEMAN BIOLOGY-REPRODUCTION-SECTION-D
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  2. Mention the region in female reproductive system in which fertilizatio...

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  3. "Incompatibility is a natural barrier in the fusion of gametes". Justi...

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  4. Show diagrammatically the stages of embryonic development from zygote ...

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  5. Describe the head region in human sperm.

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  6. (a) At which stage of life does gametogenesis begin in human male and ...

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  9. Define Oogenesis. When and where in the body is oogenesis completed?

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  10. Mention any two sexually transmitted diseases in human and its causiti...

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  11. Give reasons why: (i) Most zygotes in angiosperms divide only afte...

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  12. Describe in sequence the events that lead to the development of a 3-ce...

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  13. (a ) Trace the development ofmegaspore mother cell up to the formation...

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  14. (a ) Draw a labelled longisectional view of an albuminous 'seed'· (b...

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  15. Describe the post-zygotic events leading to implantation and placenta ...

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  16. Although sexual reproduction is a long drawn, energy-intensive complex...

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  17. Embryo sacs of some apomictic species appear normal but contain diploi...

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  19. Give examples for physical and surgical contraceptive methods.

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  21. Mention the function of Synergids and polar nuclei in embryo sac.

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