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Root

root

(Science: botany) The water- and mineral-absorbing part of a plant which is usually underground, does not bear leaves, tends to grow downwards and is typically derived from the radicle of the embryo.

See: adventitious. (botany) the usually underground organ that lacks buds or leaves or nodes; absorbs water and mineral salts; usually it anchors the plant to the ground.The part of a tooth that is embedded in the jaw and serves as support.The part of a plant that is found below ground level, responsible for the uptake of water and minerals from the surrounding soil. There are three main types of root, namely primary, secondary and adventitious, where the primary root forms the main backbon.


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How many chromosomes in nucleus of non-dividing root tip...?

... on the fact that a certain plant has 24 chromosomes in its sporophyte generation. How many chromosomes are in the nucleus of the non-dividing root tip? a) 48 b) 8 c) 12 d) 24 I really don't understand much about this question. There's nothing in my biology 12 book that I can find about this ...

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by petlover48
Wed Sep 21, 2011 4:55 pm
 
Forum: Cell Biology
Topic: How many chromosomes in nucleus of non-dividing root tip...?
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Views: 204

Nutrition in plants and animals (23 episodes) - edu4free

Nutrition in plants: Episode 1: What's nutrition (introduction) link: http://www.youtube.com/watch?v=JFwZv5uNWJA Episode 2: Root hairs link: http://www.youtube.com/watch?v=p0hJ8lGQoIE Episode 3: Water absorption link: http://www.youtube.com/watch?v=liVbS8Y2qY8&list=PL8ECE6FB5757B27B8&index=3 ...

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by edu4free
Wed Sep 14, 2011 8:36 am
 
Forum: Biology Movies
Topic: Nutrition in plants and animals (23 episodes) - edu4free
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Re: SURFACE AREA TO VOLUME RATIO AND DIFFUSION - Please help!

... collisions with many nearby smaller particles. Smaller particles move faster. The overall energy of movement is proportional to the square root of the temperature. Hotter particles move faster because they have more energy. The rate of diffusion increases as temperature increases because ...

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by Paula78
Mon Aug 15, 2011 9:44 am
 
Forum: Cell Biology
Topic: SURFACE AREA TO VOLUME RATIO AND DIFFUSION - Please help!
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Alternative irrigation method?

... in the typical sense in that water is sprayed all over the place and so much of it seems to go to waste. Why not deliver the water right to the root system of the plants? My thought was having a underground pipe system seep water out into the soil which would gradually give the plant the water ...

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by JimStick
Mon Aug 15, 2011 12:47 am
 
Forum: Botany Discussion
Topic: Alternative irrigation method?
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Views: 268

What is salt stress?

... increasing sodium chloride concentrations significantly reduced all aspects of growth, there was considerable variation between the accessions. Root and shoot length measurements of the accessions, and the progeny of a cross between four of them, indicated that a great proportion of the differences ...

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by fluffi3
Thu Jul 14, 2011 11:00 am
 
Forum: Ecology
Topic: What is salt stress?
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Views: 4880
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