SilentBtViolent
Rape Ape
Some say yes, some say no.
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Do Trichomes exist?
- Thread starter SilentBtViolent
- Start date
SilentBtViolent
Rape Ape
SilentBtViolent
Rape Ape
See, we're talking about plant structures.
SilentBtViolent
Rape Ape
Do ALL plants have them?
SilentBtViolent
Rape Ape
Looks kinda penis-ey.
SilentBtViolent
Rape Ape
Aerial surface hairs
Trichomes on plants are epidermal outgrowths of various kinds. The terms emergences or prickles refer to outgrowths that involve more than the epidermis. This distinction is not always easily applied (see Wait-a-bit climber). Also, there are nontrichomatous epidermal cells that protrude from the surface.
A common type of trichome is a hair. Plant hairs may be unicellular or multicellular, branched or unbranched. Multicellular hairs may have one or several layers of cells. Branched hairs can be dendritic (tree-like), tufted, or stellate (star-shaped).
A common type of trichome is the scale or peltate hair: a plate or shield-shaped cluster of cells attached directly to the surface or borne on a stalk of some kind.
Any of the various types of hairs may be glandular. The cannabis plant produces most of its oils in trichomes, which are separated from the surface of the plant matter to make hashish.
In describing the surface appearance of plant organs, such as stems and leaves, many terms are used in reference to the presence, form, and appearance of trichomes. The most basic terms used are glabrous—lacking hairs— and pubescent—having hairs. Details are provided by:
* glabrous, glabrate – lacking hairs or trichomes; surface smooth.
* hirsute – coarsely hairy
* hispid – having bristly hairs
* downy – having an almost wool-like covering of long hairs
* pilose – pubescent with long, straight, soft, spreading or erect hairs
* puberulent – minutely pubescent; having fine, short, usually curly, hairs
* pubescent – bearing hairs or trichomes of any type
* strigillose – minutely strigose
* strigose – having straight hairs all pointing in more or less the same direction as along a margin or midrib.
* villosulous – minutely villous
* villous – having long, soft hairs, often curved, but not matted
Hairs on plants are extremely variable in their presence across species, location on plant organs, density (even within a species), and therefore functionality. However, several basic functions or advantages of having surface hairs can be listed. It is likely that in many cases, hairs interfere with the feeding of at least some small herbivores and, depending upon stiffness and irritability to the "palate", large herbivores as well. Hairs on plants growing in areas subject to frost keep the frost away from the living surface cells. In windy locations, hairs break-up the flow of air across the plant surface, reducing evaporation. Dense coatings of hairs reflect solar radiation, protecting the more delicate tissues underneath in hot, dry, open habitats. And in locations where much of the available moisture comes from cloud drip, hairs appear to enhance this process.
Trichomes on plants are epidermal outgrowths of various kinds. The terms emergences or prickles refer to outgrowths that involve more than the epidermis. This distinction is not always easily applied (see Wait-a-bit climber). Also, there are nontrichomatous epidermal cells that protrude from the surface.
A common type of trichome is a hair. Plant hairs may be unicellular or multicellular, branched or unbranched. Multicellular hairs may have one or several layers of cells. Branched hairs can be dendritic (tree-like), tufted, or stellate (star-shaped).
A common type of trichome is the scale or peltate hair: a plate or shield-shaped cluster of cells attached directly to the surface or borne on a stalk of some kind.
Any of the various types of hairs may be glandular. The cannabis plant produces most of its oils in trichomes, which are separated from the surface of the plant matter to make hashish.
In describing the surface appearance of plant organs, such as stems and leaves, many terms are used in reference to the presence, form, and appearance of trichomes. The most basic terms used are glabrous—lacking hairs— and pubescent—having hairs. Details are provided by:
* glabrous, glabrate – lacking hairs or trichomes; surface smooth.
* hirsute – coarsely hairy
* hispid – having bristly hairs
* downy – having an almost wool-like covering of long hairs
* pilose – pubescent with long, straight, soft, spreading or erect hairs
* puberulent – minutely pubescent; having fine, short, usually curly, hairs
* pubescent – bearing hairs or trichomes of any type
* strigillose – minutely strigose
* strigose – having straight hairs all pointing in more or less the same direction as along a margin or midrib.
* villosulous – minutely villous
* villous – having long, soft hairs, often curved, but not matted
Hairs on plants are extremely variable in their presence across species, location on plant organs, density (even within a species), and therefore functionality. However, several basic functions or advantages of having surface hairs can be listed. It is likely that in many cases, hairs interfere with the feeding of at least some small herbivores and, depending upon stiffness and irritability to the "palate", large herbivores as well. Hairs on plants growing in areas subject to frost keep the frost away from the living surface cells. In windy locations, hairs break-up the flow of air across the plant surface, reducing evaporation. Dense coatings of hairs reflect solar radiation, protecting the more delicate tissues underneath in hot, dry, open habitats. And in locations where much of the available moisture comes from cloud drip, hairs appear to enhance this process.
SilentBtViolent
Rape Ape
Root hairs
Root hairs are tubular outgrowths of trichoblasts, the hair-forming cells on the epidermis of a plant root. That is, root hairs are lateral extensions of a single cell and only rarely branched. Just prior to the root hair development, there is a point of elevated phosphorylase activity.
Root hairs vary between 5 and 17 micrometres in diameter, and 80 to 1,500 micrometres in length (Dittmar, cited in Esau, 1965).
Root hairs can survive for 2 to 3 weeks and then die off. At the same time new root hairs are continually being formed at the top of the root. This way, the root hair coverage stays the same.
The ability of the root epidermis to absorb water from the surrounding soil is the same with or without root hairs, but the root hairs enlarge and extend the water absorbing surface.
It is therefore understandable that repotting must be done with care, because the root hairs are being pulled off for the most part. This is why planting out, leaves the plant withered for some time.
There are also plants lacking root hairs, mostly water plants or marsh plants, such as duckweeds (family Lemnaceae), and gymnosperms.
Root hairs are tubular outgrowths of trichoblasts, the hair-forming cells on the epidermis of a plant root. That is, root hairs are lateral extensions of a single cell and only rarely branched. Just prior to the root hair development, there is a point of elevated phosphorylase activity.
Root hairs vary between 5 and 17 micrometres in diameter, and 80 to 1,500 micrometres in length (Dittmar, cited in Esau, 1965).
Root hairs can survive for 2 to 3 weeks and then die off. At the same time new root hairs are continually being formed at the top of the root. This way, the root hair coverage stays the same.
The ability of the root epidermis to absorb water from the surrounding soil is the same with or without root hairs, but the root hairs enlarge and extend the water absorbing surface.
It is therefore understandable that repotting must be done with care, because the root hairs are being pulled off for the most part. This is why planting out, leaves the plant withered for some time.
There are also plants lacking root hairs, mostly water plants or marsh plants, such as duckweeds (family Lemnaceae), and gymnosperms.
SilentBtViolent
Rape Ape
On some plants, the head-part falls off and it looks like this:
SilentBtViolent
Rape Ape
But this pic really shows the purpose of trichomes, which is self-defense.
SilentBtViolent
Rape Ape
And this is an amazing pic of a trichome with more agressive-looking defense structures.
SilentBtViolent
Rape Ape
SilentBtViolent
Rape Ape
That is all. Sorry for the size of the pics.
Love Child
One Love
wtf?!
Love Child
One Love
Loktar said:
Oh.