Define biogeographic realm, Biology

Assignment Help:

Q. Define biogeographic realm?

Biogeographic regions are large areas that contain characteristic assemblages of animals and plants, d elineated on account of natural barriers such as oceans, mountains and deserts. A biogeographic region is generally characterised by high levels of species endemism.

Boundaries between biogeographic regions are called "biogeographic lines".

Examples are:

· Wallace's line between Southeast Asia and Australia (between Sundaland and Wallaceae), and
· Kangar-Pattini line between India and Myanmar.

The marine environment is three-dimensional with a distinct vertical zonation, each having its distinct associated species. Accordingly in a particular oceanic region, intertidal areas, the upper layers of the open ocean and the deep sea have very different assemblage by species.


Related Discussions:- Define biogeographic realm

How is this neural organization important for the diversity, Is the nervous...

Is the nervous system in platyhelminthes more or less sophisticated than in cnidarians? What are the main neural structures found in flatworms? How is this neural organization impo

What is the meaning of chelicifore, What is the meaning of Chelicifore? ...

What is the meaning of Chelicifore? These feeding mouthparts are found on most, pycnogonads. Though the proboscis is the main feeding structure in these animals when chelicifor

Explain the term- latent squint, Explain the term- Latent Squint (Anisophor...

Explain the term- Latent Squint (Anisophoria or Heterophoria) This eye condition occurs when the balance of extra-ocular muscles is altered. There is a tendency of the eye to

Microorganisms acquired during transport of raw food, Microorganisms Acquir...

Microorganisms Acquired During Transport, Handling and Processing of Raw Foods Microorganisms can come from truck, tanker, food handlers and equipment and utensils used in the

Etiological factors involved in short bowel syndrome, Q. Etiological factor...

Q. Etiological factors involved in short bowel syndrome? The etiological factors involved in this disease are: • Anaemia • Osteoporosis • Stone formation • Decrease

Hormones secreted by thyroid gland, Hormone s . The thyroid gland secretes...

Hormone s . The thyroid gland secretes following hormones. Thyroxine (tetraiodothyronine or T 4 )' and tri-iodothyronine or T 3 are secreted by the thyroid follicular cells.

Biphasic graph, how can i explain the biphasic graph i get fom combination ...

how can i explain the biphasic graph i get fom combination of two drugs?

Explain phylum rhodophyta, Phylum Rhodophyta (Red algae) 1) The photosy...

Phylum Rhodophyta (Red algae) 1) The photosynthetic pigments include red pigments (phycoerythrin) and blue pigment (phycocyanin) apart from chlorophyll, of which red pigment pr

Microinjection method for gene transfer, M i croinjection method: I...

M i croinjection method: In another approach fertilised eggs are microinjected by DNA. Microinjection requires excess of fertilized eggs. Gene transfer by microinjection is

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