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Microspore

Definition

noun, plural: microspores

(botany) The smaller meiospore produced in heterosporous plants, and develops into a male gametophyte.


Supplement

The microspores are haploid spores produced by a plant sporophyte. In seed plants, it corresponds to the developing pollen grain at the uninucleate stage.


Compare: megaspore

See also: spore


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help with some questions

... seed -the fertilized antipodals develop into the seed coat Which most closely represents the male gametophyte of seed-bearing plants? -ovule -microspore mother cell -pollen grain -embryo sac -fertilized egg thanks!

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by nile_opeth
Thu May 03, 2007 12:56 am
 
Forum: Botany Discussion
Topic: help with some questions
Replies: 2
Views: 954

Homosporous and Heterosporous plants.....help! + generations

Thank you very much. The lecturer today actually mentioned today that when the pollen grain has only 1 nucleus, it is a microspore, but when this nucleus seperates into the tube nucleus and male generative nucleus, it is the microgametophyte. Neat stuff. Hehe Thanks :)

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by unrealfighter
Thu Nov 02, 2006 2:55 pm
 
Forum: Botany Discussion
Topic: Homosporous and Heterosporous plants.....help! + generations
Replies: 5
Views: 3301

Reproduction in Flowering Plants

Process of microspore formation (microsporogenesis) Male spore development begins with:microsporangia or microspore mother cell * is diploid * is found in a pollen sac of the anther * undergoes meiosis * and produces 4 microspores ...

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by chepay118
Sat Mar 25, 2006 2:10 am
 
Forum: Botany Discussion
Topic: Reproduction in Flowering Plants
Replies: 2
Views: 1160

Reproduction in Flowering Plants

Please help me in answer this questions: 1.Explain what megaspore formation is! Show the pathway of megaspore formation? 2.Explain what microspore formation is! Show the pathway of microspore fomation! 3.Explain the double fertilization process in plants? PLease answer this questions as fast ...

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by rama
Tue Mar 21, 2006 10:12 am
 
Forum: Botany Discussion
Topic: Reproduction in Flowering Plants
Replies: 2
Views: 1160

Flowering plants

Is true that the ovules contain the microspore mother cell?, and the male gametophyte generation will form the generative and tube nuclei? i think the secon' one is false what do u think??? Regarding plants: 1) the sporophyte undergoes mitosis ...

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by Elliott
Wed Mar 01, 2006 5:16 am
 
Forum: Botany Discussion
Topic: Flowering plants
Replies: 1
Views: 618
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