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What is heterospory ? Briefly comment on it's significance , Give two examples.
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Ǫ) ᴡʜᴀᴛ ɪs ʜᴇᴛᴇʀᴏsᴘᴏʀʏ?
Heterospory is the production of spores of two different sizes and sexes by the sporophytes of land plants.
ɪᴛs sɪɢɴɪғɪᴄᴀɴᴄᴇ:-
The phenomenon of heterospory lead to the reduction of gametophyte, in situ germination of spores, retention of megagametophyte in the megasporangia and finally to the seed development.
ᴇxᴀᴍᴘʟᴇs:-
Examples of heterospory are Selaginella, Salvinia and Marsilea, etc.
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Answer:
The phenomenon of producing two different kinds of spores in the same plant is known as heterospory.
Significance of heterospory:
- Heterospory leads to the development of seeds in gymnosperms and angiosperms.
- It is required in the differentiation of male and female gametophytes.
Examples: Salvinia, Selaginella
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