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प्रश्न
Give an account of population regulation.
उत्तर
The inherent tendency of all animal populations is to increase in number. But it does not increase indefinitely. Once the carrying capacity of the environment is reached, population numbers remain static or fluctuate depending on environmental conditions. This is regulated by many factors which are
- Density independent – Extrinsic factors
- Density-dependent – Intrinsic factors
Extrinsic factors include the availability of space, shelter, weather, and food, etc. Intrinsic factors include competition, predation, emigration, immigration, and diseases.
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संबंधित प्रश्न
Study the graph given below and answer the questions that follow :
(i) Write the status of food and space in the curves (a) and (b).
(ii) In the absence of predators, which one of the two curves would appropriately depict the prey population?
(iii) Time has been shown on X-axis and there is a parallel dotted line above it. Give the significance of this dotted line
Define the Carrying capacity.
Answer the following question.
What is "population" according to you as a biology student?
Measures of ‘Central tendency’ refer to:
Nutrient enrichment of water body result.
The phenomenal and rapid increase of population in a short period is called ______.
Which of the following would necessarily decrease the density of a population in a given habitat?
Which one of the following organisms reproduces sexually only once in its lifetime?
The density of a population in a habitat per unit area is measured in different units. Write the unit of measurement against the following:
Banyan
Define ‘zero population growth rate’. Draw a age pyramid for the same.
