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

Control of soil pollution, Following steps must be taken: Domestic an...

Following steps must be taken: Domestic and industrial garbage should be profitably utilized. Compost pits and installation of Gobar-gas plant in rural areas must be encourag

steps of c-dna creation and mrna, C dna is made from a mature m rna of euk...

C dna is made from a mature m rna of eukaryotic cell with the utilization of enzyme called as reverse transcriptase. Steps in c dna creation 1. m rna is made and purified f

Planning the nursing care - wilms tumour, Planning the Nursing Care   ...

Planning the Nursing Care     Provide preoperative and post operative nursing care to child    Assist in therapeutic management of child.    Provide comfort.  S

Explain biochemical or physiological risk factors, Explain Biochemical or P...

Explain Biochemical or Physiological Risk Factors ? The biochemical or physiological risk factors are those abnormalities, some of which are metabolic in nature, which give ris

Embryology, what is the full name of Balfour in Balour''s law of cleavage?

what is the full name of Balfour in Balour''s law of cleavage?

Chances of change in the gene pool, A genetic trait which is considered to ...

A genetic trait which is considered to be harmful in the present day might prove to be beneficial in future. For example by removing the trait for sickle cell we may increase the s

Explain about the term - paediatric neuropsychologist, Explain about the te...

Explain about the term - paediatric neuropsychologist In the evaluation of infants and young children, all sources of reliable and valid data available to the paediatric neurop

Prokaryotes and eukaryotes, Prokaryotes and Eukaryotes By now, you kno...

Prokaryotes and Eukaryotes By now, you know that cell theory holds good for all living forms. However, if you examine under the microscope, the cells of a bacterium, a blue gr

Target tissues and organs of each adenohypophyseal hormone, Q. What are the...

Q. What are the target tissues and target organs of each adenohypophyseal hormone? GH- bones, muscles and cartilages, Prolactin- mammary glands, ACTH- the cortical portion of t

Ion channel-linked receptors, Ion channel-linked receptors will transmitter...

Ion channel-linked receptors will transmitter-gated ion channels or ionotrophic receptors that   are included in the rapid synaptic signaling among electrically excitable cells. No

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