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Pollen

pollen

(Science: plant biology) The microspores of seed plants, the powdery mass of microspores shed from anthers.


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Concept of sexuality in plants.

Actually, the plant per se is sporophyte which is diploid and gives rise to haploid spores, which are the pollen and ovules. However, mostly plants contain both "sexes".

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by JackBean
Wed Aug 28, 2013 2:10 pm
 
Forum: Botany Discussion
Topic: Concept of sexuality in plants.
Replies: 3
Views: 2016

Re: Pterydophyta

... which travel by wind, water, or animal to new locations where new fern colonies can begin. Since they spread by spores, ferns do not have flowers, pollen, fruits, or seeds.

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by Anonymous
Sun Aug 04, 2013 12:52 pm
 
Forum: Botany Discussion
Topic: Pterydophyta
Replies: 30
Views: 21800

Structure of flower

... to the plant. Corolla All the petals together form the corolla. Stamen Male part of the flower, consisting of the anther and filament, makes pollen grains. Filament The stalk of the stamen which bears the anther. Anther The pollen bearing portion of a stamen. Pollen Grains containing the ...

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by snowfall
Thu May 30, 2013 5:29 pm
 
Forum: Botany Discussion
Topic: Structure of flower
Replies: 3
Views: 5716

How many pollengrains enter the ovary?

As I understand it, a single pollen grain can contain multiple gametes with which many eggs can be pollinated. Most ovaries have more than one egg, so with enough gametes, they can all be fertilized.

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by danactsalot
Wed Dec 12, 2012 2:12 am
 
Forum: Botany Discussion
Topic: How many pollengrains enter the ovary?
Replies: 1
Views: 2500

How many pollengrains enter the ovary?

How many pollen grains enter the ovary during pollination. If only one pollen tube enters,one seed should be formed.But how is it possible to form large nuber of seeds in a single ovary?

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by kumar985
Sun Oct 28, 2012 9:32 am
 
Forum: Botany Discussion
Topic: How many pollengrains enter the ovary?
Replies: 1
Views: 2500
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