Wind as a medium for dispersal, Biology

Wind as a medium for Dispersal

Many microorganisms, fungal spores and bacteria are freely transported over long distances even by moderate winds. In wind pollinated plants, the amount of pollen grains is relatively large because a large fraction of it may be wasted. Pollen grains in some genera like Pinus are specially adapted to float in air due to the presence of air bladders. Many plants produce extremely small seeds, others develop winglike structures or fine silky hairs that help them to float in air (Figure shown below). Wind is a universal agent for the dispersal of fruits and seeds which helps in better establishment of seedlings resulting in greater success of survival and healthy growth by avoiding competition.

Dispersal of pollutants

Wind determines the extent of initial dilution of pollutants, emissidn, direction and rate of dispersal. The more widely and rapidly they are dispersed, lesse~w ill be their impact on the environment. If the wind speed is high, pollutant concentrations are likely to be relatively low, while low wind or absence of wind builds up high concentration of pollutants.

2190_wind as dispersal.jpg

Figure: Fruits (a) and seeds (b) d plants adapt for distance transportation by wind.

Posted Date: 12/10/2012 7:25:00 AM | Location : United States

Related Discussions:- Wind as a medium for dispersal, Assignment Help, Ask Question on Wind as a medium for dispersal, Get Answer, Expert's Help, Wind as a medium for dispersal Discussions

Write discussion on Wind as a medium for dispersal
Your posts are moderated
Related Questions
Determine the Symptoms of Dehydration? The symptoms of dehydration are: Thirst Loss of appetite Decreased urination Impaired physical performance Nau

Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4

Explain the OBJECTIVES of history of mart disease? After reading this unit, you should be able to: 1. Understand the importance of Cardio-vascular diseases as the leading cause

Restricted Lung Diseases Restricted lung disease are classified into the following: Parenchymal inflammation. This can be due to infection e.g. pneumonia acute bronchi

Vertebrate Limb Earlier we know that how a series of sequential and coordinated interactions between different cell groups and tissues carry about the construction of a compl

What is the system that permits movement and fixation to echinoderms? The system that allows movement and fixation to substrates in echinoderms is known as the ambulacral syste

what two gases are released by animals during the process of cellular respiration

Explain about the Holmgren's  Wools   This is a matching test  of  coloured pieces of  wool. While this  is not  a highly  favored method  of  testing  it does  show  serious d

Biological energy: Whenever matter is broken down its chemical energy is released as heat. Non biological system can utilize this heat energy directly in the performance  of work,