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

Biotic potential of a bacterial population, Q. How different is the growth ...

Q. How different is the growth according to the biotic potential of a viral population from the growth according to the biotic potential of a bacterial population? The growth c

Variations, VARI A TION S - Defined as "dissimilarities of featur...

VARI A TION S - Defined as "dissimilarities of features among members of the same species". Offsprings of same parent are different and also differ from their parent.

Spermatogonia, Spermatogonia Spermatogonia are the youngest germ cells...

Spermatogonia Spermatogonia are the youngest germ cells from which spermatozoa proliferate. These lie next to the basement membrane and undergo series of mitotic divisions lea

Explain the term intracellular filaments, Explain the term Intracellular Fi...

Explain the term Intracellular Filaments? Intracellular Filaments : The cell contains fibrous proteins which serve to give the cell its shape and internal organization and fo

Need help, Many endangered plant species are currently being propagated by ...

Many endangered plant species are currently being propagated by commercial growers and botanical gardens and the sold (as both plants and seeds) to government agencies. Conservatio

What is sanitation in food service establishments, Q. What is Sanitation in...

Q. What is Sanitation in food service establishments? We start our study of this topic by first defining what is sanitation? A three-word definition of food sanitation

What is paediatric clinical literature, What is paediatric clinical literat...

What is paediatric clinical literature The paediatric clinical literature has expanded greatly in its coverage of the wide variety of medical circumstances that can negatively

Modern cell theory, MODER N CELL THEORY Also known as cell doctrine or...

MODER N CELL THEORY Also known as cell doctrine or cell principle. [Cell theory + cell lineage theory = cell principle] Schleiden-Schwann's cell theory and cell lineage

What is the contraceptive mechanism of the iud, What is the contraceptive m...

What is the contraceptive mechanism of the IUD? The IUD (intrauterine device) is a piece of plastic coated with copper that is inserted within the uterus by a doctor. Copper is

What are the dominate phenotype, There is a population of 100 frogs. 20 are...

There is a population of 100 frogs. 20 are heterozygotes, 30 are homozygous recessive, 25 are homozygous dominate. What is the frequency of the dominate allele? The recessive allel

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