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 the function of enterogastrone, Where is it produced and what is th...

Where is it produced and what is the function of enterogastrone in the digestive process? When the chyme is too fatty there is a secretion of enterogastrone by the duodenum. Th

Importance of inherited characteristics in their explanation, QUESTION ...

QUESTION Behaviourists underestimate the importance of biological factors such as the inherited factors, by emphasizing the simple approach of Stimulus-Response to explain beha

Northern blot, Northern blot is a technique for analyzing mixtures of RNA ...

Northern blot is a technique for analyzing mixtures of RNA by transfer of size-separated RNA fragments to a synthetic membrane, the presence and rough size of one particular type

Explain the sources of microorganisms, Explain the Sources of Microorganism...

Explain the Sources of Microorganisms? Microorganisms are virtually present everywhere in nature including air, water and soil. The microbial flora is also associated with the

Speciation, SPECIATION - Origin of new species: An isolated popula...

SPECIATION - Origin of new species: An isolated population of a species independently develops different types of mutations. The later accumulate in its gene pool. Afte

History of viruses, In the early days of microbiology, the disease producin...

In the early days of microbiology, the disease producing submicroscopic agents were termed as 'filterable viruses' because of their ability to pass through conventional filters whi

Determine the factors affecting fertilizer requirements, Factors Affecting ...

Factors Affecting Fertilizer Requirements   The rapid increase in the use of fertilizers is based on the fact that large profits are obtained from the money invested in them. The

What is hemoglobin s, Question 1 What is megalobastic anemia? Discuss brie...

Question 1 What is megalobastic anemia? Discuss briefly its lab diagnosis. How would you differentiate megaloblastic anemia from other anemias? Question 2 What is hemog

Define prevention of idd by iodized oil, Define prevention of idd by Iodize...

Define prevention of idd by Iodized Oil? The other approach employed as a specific measure for women and children in hyper-endemic areas is injection of iodized oil. Intramuscu

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