Which of the following communities is more vulnerable to invasion by outside animals and plants?

Related Mcqs:

1. In an aquatic environment, microscopic animals and plants are collectively known:

   A. Commensals
   B. Herbivores
   C. Fauna and flora
   D. Planktons

2. Plants and animals living in a particular area consitute:

   A. Flora and fauna
   B. Community
   C. Ecosystem
   D. Ecology

3. All the non-cultivated plants and non-comesticated animals are referred to as:

   A. Useless organism
   B. Harmful life
   C. Wild life
   D. Enemies of man

4. Which element is vital to plants and animals for the synthesis of proteins and nucleic acies?

   A. Oxygen
   B. Nitrogen
   C. Carbon
   D. None of these

5. The primary succession refers to the development of communities on a:

   A. Freshly cleared crop field
   B. Forest clearing after devastating fire
   C. Pons, freshly filled water after a dry phase
   D. Newly-exposed habitat with no record of earlier vegetation

6. A succession exhibiting changes in the communities at a place is described as:

   A. Biotic succession
   B. Physiographic succession
   C. Climatic succession
   D. Geographic succession

7. Primary succession refers to the development of communities on a:

   A. Pond freshly filled with water after a dry phase
   B. Freshly cleared crop fields
   C. Newly exposed habitat with no record of earlier vegetation
   D. Forest clearing after devastating free

8. The invasion of a new community in a bare area is initiated by:

   A. Migration
   B. Ecesis
   C. Aggregation
   D. All of these

9. The invasion of a community in succession involves:

   A. Ecesis, aggregation and competition
   B. Migration, aggregation and competition
   C. Aggregation, competition and coaction
   D. Migration, ecesis and aggregation

10. Area where two communities overlap each other:

    A. Niche
    B. Ecotype
    C. Edge line
    D. Ecotone
    E. Corridor