Bio invasion may be considered as a form of biological pollution and significant component on global...........

Geography and Environment (PCS) Biodiversity

Bio-invasion may be considered as a form of biological pollution and significant component on global change and one of the major causes of species extinction. Which of the following are the characteristic features of Invasive species that make them so successful?

1. Relatively large amounts of DNA in their cell nuclei

2. Specialist in distribution

3. Possessing characteristic features like “pioneer species” in varied landscapes

4. Long flowering and fruiting periods

Select the correct answer using the code given below:

1, 2, and 3 only

1, 3, and 4 only

3 and 4 only

1, 2, and 4 only

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Explanation:

Invasive Species :
An alien plant also referred to as exotic, introduced, foreign, non-indigenous or nonnative, is one that has been introduced by humans intentionally or otherwise through human agency or accidentally from one region to another. An alien plant that has escaped from its original ecosystem and is reproducing on its own in the regional fl ora is considered a naturalized species.
The global extent and rapid increase in invasive species is homogenising the world’s flora and fauna and is recognized as a primary cause of global biodiversity loss.
Bio-invasion may be considered as a form of biological pollution and signi fi cant component on global change and one of the major causes of species extinction. Characteristic features of Invasive species
Invasive species possess characteristic features like “pioneer species” in varied landscapes, tolerant of a wide range of soil and weather conditions, generalist in distribution, produces copious amounts of seed that disperse easily, grows aggressive root systems, short generation time, high dispersal rates, long fl owering and fruiting periods, broad native range, abundant in native range.