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

Phylogeny and evolution, While studying evolution, a student comes across a...

While studying evolution, a student comes across a cladogram that includes clades like amphibia, reptilia, aves, and mammalia. What must be the basal clade?

Define b-complex vitamins required for elderly, Define B-Complex Vitamins r...

Define B-Complex Vitamins required for elderly? B-Complex Vitamins: Various B complex vitamins especially B folic acid, B 6 ,  and riboflavin are found to affect favourably t

How different are pteridophytes from bryophytes, Q. How different are pteri...

Q. How different are pteridophytes from bryophytes regarding substance transport? Pteridophytes are tracheophyte (vascular) plants that are they have tissues specialized in con

Pporifera, write the general account of porifera

write the general account of porifera

Explain dna or rna segment, DNA or RNA segment tagged with a radioactive mo...

DNA or RNA segment tagged with a radioactive molecule is called: 1. Vector 2. Probe 3. Clone 4. Plasmid Probe

What is function of gamaaminobutyric acid, Q. What is function of Gamaamino...

Q. What is function of Gamaaminobutyric acid? GABA is the principal inhibitory transmitter in the brain. The concentration of GABA is up to 1000 times greater than that of oth

Cnidarla, Tlie phylum Cnidaria or Coelenterata, includes the faliiiliar hyd...

Tlie phylum Cnidaria or Coelenterata, includes the faliiiliar hydras, jelly fishes, sea anemones and corals. You have olreacly studied about Cnidarialis in Units 4 and 7 of LSE-09

The dna revolution, Unprecedental clarity has come to our understanding of ...

Unprecedental clarity has come to our understanding of genetic differences by the analysis of DNA sequences. It is not surprising in which the latest DNA technologies are leading t

Explain carbohydrates requirement during thyphoid, Explain carbohydrates re...

Explain carbohydrates requirement during thyphoid Carbohydrates: Carbohydrate intake should be liberal. This can be attributed  to: 1.  Repletion of glycogen stores. 2.

Determine the principles of bcc, Determine the Principles of BCC BCC ...

Determine the Principles of BCC BCC should be integrated with program goals from the starting. BCC is a necessary part of diabetes prevention, care and support programs, and

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