Organisms and Populations — Important Questions
ICSE · Class 12 · Biology
60 important questions from Organisms and Populations for ICSE Class 12 Biology, with answers. Includes multiple choice questions.
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Important Questions from Organisms and Populations
The J-shaped growth curve of a population represents:
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Exponential growth
Exponential (J-shaped) growth occurs when resources are unlimited and every individual reproduces at maximum rate. The population grows faster and faster over time, giving a J-curve.
The S-shaped growth curve of a population is called:
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Logistic growth curve
Logistic (S-shaped or sigmoid) growth occurs when resources are limited. Growth is initially exponential, then slows as the population approaches the carrying capacity (K), forming an S-curve.
Carrying capacity (K) refers to:
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The maximum population size an environment can sustain indefinitely
Carrying capacity (K) is the maximum population size that a given environment can support indefinitely, given the food, water, shelter, and other resources available.
In mutualism, the relationship between two species is:
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Both species benefit
Mutualism is a symbiotic relationship where both species benefit. Examples include pollination (insect gets nectar, plant gets pollinated) and mycorrhizal associations.
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