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Gymnosperms

Gymnosperms

gymnosperms are a group of vascular plants whose seeds are not enclosed by a ripened ovary (fruit). Gymnosperms are distinguished from the other major group of seed plants, the angiosperms, whose seeds are surrounded by an ovary wall. The seeds of many gymnosperms (literally, naked seed) are borne in cones and are not visible. Taxonomists now recognise four distinct divisions of extant gymnospermous plants (coniferophyta, cycadophyta, ginkgophyta, and gnetophyta).


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New theory of evolution

... Turns out that also this model, which founds some applications in different disciplines, has important meaning for biology. Simple plants and gymnosperms include above 150 thousands specieses, angiosperms above 250 t. specieses, fungi 1,5 mln, insects about 1 mln, primitive animals tens thousands, ...

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by SystemRGB
Fri Nov 14, 2014 11:45 pm
 
Forum: Evolution
Topic: New theory of evolution
Replies: 0
Views: 848

Kingdom Plante

... Again,Cryptogamia(non-flowering plants)is divided into Thallophyta,Bryophyta and Pteridophyta. Phanerogamia(flowering plants)is divided into Gymnosperms and Angiosperms. I think you got it.

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by sumita
Thu Sep 02, 2010 11:48 am
 
Forum: Botany Discussion
Topic: Kingdom Plante
Replies: 3
Views: 12260

Adaptations to life in water or plant?

In ferns, how are the cuticle and sporanga adapted to life on land? In mosses, how are capsule and protonema adapted to life on land? In gymnosperms, how are pollen cone, pollen grain, seed and seed cones adapted to life on land? In angiosperms, how are flower, fruit and seeds adapted to life ...

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by Bobby123456
Fri Jul 23, 2010 3:52 am
 
Forum: Botany Discussion
Topic: Adaptations to life in water or plant?
Replies: 0
Views: 2047

Some questions on evolution...

... until the right trail of mutations led to their style of reproduction, but the advantage gained from that style helped them outcompete the gymnosperms and marsupials.

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by Darby
Sun May 02, 2010 4:52 pm
 
Forum: Evolution
Topic: Some questions on evolution...
Replies: 6
Views: 3492

seeking info on Pine reproductive structures.

look up that general, dare i say it, BRANCH of plants (haha, get it?) they're called gymnosperms. that's a good keyword hope that helps

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by plasmodesmata11
Wed Apr 21, 2010 10:52 pm
 
Forum: Botany Discussion
Topic: seeking info on Pine reproductive structures.
Replies: 3
Views: 3023
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