Dictionary » F » Fronds



(Science: botany) a leaf especially of a fern, cycad or palm, a leaf-like portion of a non-vascular plant (for example a foliose alga).

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Re: Pterydophyta

... called rhizomes, which grow sideways at the surface or underground. Many leaves grow from rhizomes and make fern colonies. Fern leaves are called fronds. Fronds have a petiole (leaf stalk) and blade (main part of leaf). Each leaf has smaller leaflets called pinnae. Instead of flowers, ferns have ...

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by Anonymous
Sun Aug 04, 2013 12:52 pm
Forum: Botany Discussion
Topic: Pterydophyta
Replies: 30
Views: 26741

White substance on palm fronds

This is my first post here and I am an artist/photographer. I've been taking macro shots of palm fronds on trees simply called "palm tree" here in west central Florida. Can someone tell me what the white stuff is on the left side of the photo? I applied a little ...

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by dashtwo
Sat Jun 02, 2012 7:06 pm
Forum: Botany Discussion
Topic: White substance on palm fronds
Replies: 0
Views: 1321

Plant physiology question

... the sperm in the antheridium was found to have 8 chromosomes and the dominate gene “A” on one of the chromosomes which produced large sporophyte fronds. In a hybrid “2” fern, the egg was also found to contain 8 chromosomes with a recessive gene “a” which produced small sporophyte fronds. If the ...

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by inglej
Tue Apr 03, 2012 5:41 am
Forum: General Discussion
Topic: Plant physiology question
Replies: 0
Views: 2099

Ferns and their life cycle

... perplexing. In the 1700s, they learned to propagate them by sowing what appeared to be tiny dustlike "seeds" from the undersides of fronds. Despite many attepts, the scientists could not find the pollen source, which they assumed must stimulate the "seeds" to develop. Imagine ...

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by MissAshley
Mon Nov 30, 2009 7:18 pm
Forum: Botany Discussion
Topic: Ferns and their life cycle
Replies: 7
Views: 9404

Natural selection wrong due to cambrian explosion

... The Ediacaran biota include the oldest definite multicellular organisms with tissues, and the most common types resemble segmented worms, fronds, disks, or immobile bags. They bear little resemblance to modern lifeforms, and their relationship even with the later lifeforms of the Cambrian ...

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by gamila
Wed Oct 28, 2009 12:41 pm
Forum: Evolution
Topic: Natural selection wrong due to cambrian explosion
Replies: 35
Views: 32229
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