Life forms - qualitative characters, Biology

Assignment Help:

Life Forms - Qualitative Characters

The form and structure of terrestrial communities are determined by the nature of vegetation. Vegetation may be classified according to growth form. The plants may be tall or short, herbaceous or woody, evergreen or deciduous. We might speak of trees, shrubs, and herbs, and then further sub-divide these categories into needle-leaved evergreens, broad-leaved evergreens, broad-leaved deciduous, shrubs, ferns, grasses and so on and so forth.

A more useful system was proposed by a Danish botanist, Christen Raunkiaer in the year 1903. In this system, instead of considering plants' growth form, he classified plants by life form, the relation of their height above ground to their perennating organ. A perennating organ is one that survives from one growth season to the next, remaining inactive over winter or dry periods. Perennating tissue is the embryonic or meristematic tissue of buds, bulbs, tubers, roots and seeds.


Related Discussions:- Life forms - qualitative characters

What is cost effective analysis, What is Cost Effective Analysis? Cost ...

What is Cost Effective Analysis? Cost effective analysis: Cost effective analysis provides for the choice of least expensive strategy at the least cost. Here the outcome is mea

Pathophysiology of mitral stenosis, Q. Pathophysiology of mitral stenosis? ...

Q. Pathophysiology of mitral stenosis? Normally there is no pressure gradient between left atrium and the left ventricle during diastole. However, as the valve orifice size dec

Experiment the test for limestone, The test for limestone You can chec...

The test for limestone You can check the rock samples to see if any are limestone by dropping lemon juice, vinegar or some other dilute acid on them. If any are limestone they

Neuropsychological screening of adults, Neuropsychological screening of adu...

Neuropsychological screening of adults Normally, a neuropsychological examination explores in depth an individual's performance in a wide range of functional domains. There are

What are the three periods into which interphase is divided, What are the t...

What are the three periods into which interphase is divided? Interphase is the preceding phase to the mitotic division. It is separated into three periods, G1, S and G2 (the l

What is the cellular structure to which mrna molecules bind, What is the ce...

What is the cellular structure to which mRNA molecules bind to start the protein synthesis? To make proteins mRNA molecules of necessity associate to ribosomes. Ribosomes have

What is physical activity ratio, What is Physical activity ratio? Physi...

What is Physical activity ratio? Physical activity ratio (PAR): The energy cost of an activity per unit of time (usually a minute or an hour) expressed as a multiple of BMR. It

Blank titration for determination of iodine number of lipids, Define Blank ...

Define Blank titration for Determination of the Iodine Number of Lipids? Using an autopipette, measure 25 ml of Hanus iodine reagent accurately and transfer into a 250 ml iodin

How is carbon dioxide released by cellular respiration, Q. How is carbon di...

Q. How is carbon dioxide released by cellular respiration transported from the tissues to be eliminated through the lungs? In vertebrates almost 70% of the carbon dioxide is ca

Show the regulation of blood pressure, Q. Show the Regulation of blood pres...

Q. Show the Regulation of blood pressure? Nervous System control of BP Maintains primarily an adequate systemic BP, and alters blood distribution in body to meet specific fu

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd