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Pollen Grain

A structure produced by plants containing the male [[haploid [[gamete to be used in reproduction. The gamete is covered by protective layers which perform there role until the pollen grain is capable of fertilising when reaching the female [[stigma.


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sporophytic haploids....is it true?

... chosen example). You can induce development of a cabbage plant from a pollen grain, obtaining a haploid plant. However, you would still refer to it as a sporophyte, because ...

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by MrMistery
Sun Oct 28, 2007 3:32 pm
 
Forum: Botany Discussion
Topic: sporophytic haploids....is it true?
Replies: 5
Views: 1854

WHY?

... a conifer like Yew (Taxus sp.). Members of the family Taxaceae have no pollen chamber because they reproduce differently than other conifers. They ... As for Cycas having winged pollen. I'll give you a hint. The pollen grain is transferred by the wind. Wouldn't wings make air travel easier? ...

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by ivygirl_5
Sun Aug 26, 2007 6:34 am
 
Forum: Botany Discussion
Topic: WHY?
Replies: 1
Views: 895

which can survive better;POLLEN OR SPORES?

... surviving, because they only need a good place for sprouting, while the pollen grain needs a stigma of its spesies' flower. It may have lower chances of coming across one. ...

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by SU_reptile
Wed May 09, 2007 7:20 pm
 
Forum: Botany Discussion
Topic: which can survive better;POLLEN OR SPORES?
Replies: 6
Views: 1073

species-specific pattern of sporoderm

... of sporoderm is characteristic for each species or genus, despite pollen grain has genetic material different from the mother sporophyte??

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by SU_reptile
Wed May 09, 2007 3:20 pm
 
Forum: Botany Discussion
Topic: species-specific pattern of sporoderm
Replies: 0
Views: 554

help with some questions

... 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
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