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Hair - Plants

Hairs in plants grow from epidermal cells and are involved in transpiration. Some hairs can be found in plant roots and actively absorb water while others are capable of secretion. Sometimes a network of hairs on the outer layer of plants allow a reduced rate of transpiration, as water gets trapped between the plants and hairs, effectively reducing the water concentration difference between the plants internal Environment and its immediate external environment.

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... some fad that will fade out after all the rich people have their blonde hair and blue eyes. On an evolutionary timescale, it will cause an explosion ... for a mutation. This allowed the development of large and long-lived plants and animals, which would have taken trillions of years to evolve if ...

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by Rap
Sat May 26, 2012 3:59 pm
Forum: Evolution
Topic: Perception and Evolution
Replies: 14
Views: 11016

fiber/hair moving thru water

In some people, the reason their hair moves is because there are alternative cellular energy pigments attached to their ... The alternative cellular energy pigment pathway is similar to photosynthesis in plants. Alternative cellular energy pigments are also known as ace pigments.

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by ebianco
Wed Apr 11, 2012 5:12 am
Forum: General Discussion
Topic: fiber/hair moving thru water
Replies: 17
Views: 18511

Re: Sound and how the brain reacts to it

... a similar, but not quite the same, sensation when someone brushes my hair. These sounds in particular lead to this response: - Someone turning ... person eating an apple, pear, or peach - Someone tending to houseplants (snipping dead growth, spritzing and watering) - Someone gently using ...

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by shihtzumom
Mon Aug 15, 2011 1:01 pm
Forum: Human Biology
Topic: Sound and how the brain reacts to it
Replies: 89
Views: 176842

Biology HW help

... I'm going to mark my answer with a (X) 1. Week 7 Q. 1 (Points: 5) Pea plants were particularly well suited for use in Mendel's breeding experiments ... 5) A couple has three children, all of whom have brown eyes and blond hair. Both parents are homozygous for brown eyes (BB), but one is a blond ...

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by sharingan23
Fri Feb 26, 2010 9:09 am
Forum: Genetics
Topic: Biology HW help
Replies: 1
Views: 15151


... for that fell outside the original population's range for bristle hair number. This is a quanitative trait, determined by multiple genes. Another ... in the Galapagos islands. During a period of drought, small-seed plants began to dominate the flora and there was selective pressure for reduced ...

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by robsabba
Thu Aug 27, 2009 2:48 pm
Forum: Evolution
Topic: Natural selection is proven wrong
Replies: 247
Views: 690208
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