Biological adaptation, Biology

Biological Adaptation

These adaptations depend on the geology and basic fertility of the region and some of the mechanisms that are especially well developed in tropical rain forests are:

  • Root mats consisting of many fine feeder roots which penetrate the surface of the litter and quickly recover nutrients from leaf fall and rain before they are leached away. Root mats also inhibit the activity of denitrifying bacteria, thus preventing loss of nitrogen.
  • Mycorrhizal fungi associated with root systems act as nutrient traps and help in the recovery and retention-of nutrients. This symbiosis is also present in temperate forests of areas that are basically poor in nutrients.
  • Evergreen leaves have thick waxy cuticles that retard loss of water and nutrients, also leaves have pointed tips or 'drip tips' that drain off water fast, thereby reducing leaching of leaf nutrients.
  • Algae and lichens that cover surfaces of many leaves pick up nutrients from rainfall some of which becomes available to the leaves immediately. Lichens also fix nitrogen.
  • Thick bark inhibits diffusion of nutrients out from the phloem and subsequent loss by stem flow i.e., rain running down the trunks of trees.
Posted Date: 1/19/2013 2:35:43 AM | Location : United States







Related Discussions:- Biological adaptation, Assignment Help, Ask Question on Biological adaptation, Get Answer, Expert's Help, Biological adaptation Discussions

Write discussion on Biological adaptation
Your posts are moderated
Related Questions
Explain Canning (temperature above 100° C) - method of food preservation? Canning is the process in which the foods are heated in hermetically sealed (airtight) jars or cans t

Therapeutic diets - Qualitative methods Qualitative methods: This  is where  you  give  the individual choices,  clear guidelines, menu guidance and supporting  information  su

What are the benefits of high-throughput expression analysis in molecular biological investigations? Ans) These methods permits simultaneous analysis of the expression of a lot

Explain about Thermal Destruction of Enzymes during Sterilization? Before we move on to canning, we need to emphasize here that like thermal destruction of microorganisms, ther

How does the study of fossils strengthen the theory of evolution? The study of fossils reveals extinct and ancient species having many similar structures to others of the prese

Foot-and-mouth disease Foot-and-mouth disease (FMD) is an extremely contagious viral disease of cloven footed animals most notably cattle, pig and sheep. It is well known for

What are the types of muscle tissues? What are the morphological features that differentiate those types? There are three kinds of muscle tissue: the skeletal striated muscle t

How can the visual deficiencies known as myopia and hypermetropia be optically explained? Myopia is the visual condition in which the images are produced before (in front of)

What is meant by binomial nomenclature and what are its basic rules? Scientific nomenclature of a species must have, at least, two names: one that classifies it as genus and th

Submerged implants Decision has to be made between two techniques. These techniques are: Technique 1: Stage two using a mucoperiosteal flap Technique 2: Stage two done wi