The following points highlight the two main types of population growth curves. The types are: 1. J - Shaped Curve 2. S - Shaped or Sigmoid Curve. Type # 1. J - Shaped Curve: In the case of J-shaped growth form, the population grows exponentially, and after attaining the peak value, the population may abruptly crash. This increase in population [...]
The following points highlight the seven main factors affecting population of living organisms. The factors are: 1. Natality 2. Mortality 3. Dispersal 4. Age Distribution 5. Biotic Potential and Environmental Resistance 6. Biotic and Abiotic Factors 7. Density Dependent and Density Independent. Factor # 1. Natality: The increase in number of individuals in a population under given environmental conditions is [...]
Plants of hot deserts are adapted to survive in dry conditions of soil and high temperature. Places where available water is not present in adequate quantity are termed xeric habitats. The plants growing in xeric conditions are xerophytes. Xeric habitats may be of following types: (i) Habitats physically dry; where water retaining capacity of the soil is very low and [...]