Organisms and Populations — Practice Quiz
Maharashtra Board · Class 12 · Biology
Try a 4-question quiz on Organisms and Populations for Maharashtra Board Class 12 Biology: tap an answer to check it and see why.
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Quick Quiz: Organisms and Populations
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What is the primary difference between habitat and niche?
Organisms that can tolerate a wide range of temperatures are called:
The birth rate of a population is technically called:
In exponential growth, the population grows in:
Sample Questions
Which of the following are major abiotic factors affecting organisms?
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Temperature, Water availability, Light intensity, Soil composition
Temperature, water, light, and soil are the four major abiotic (non-living) factors that influence organisms. Predation and competition are biotic (living) factors.
Which type of population interaction benefits both species?
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Mutualism
In mutualism, both species benefit from the interaction (+ +). Competition harms both (- -), predation benefits predator but harms prey (+ -), and parasitism benefits parasite but harms host (+ -).
The carrying capacity of an environment is represented by the letter:
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K
K represents the carrying capacity - the maximum population size that an environment can sustain. N represents population size, r represents growth rate, and B represents births.
Desert plants like Opuntia have modified leaves as:
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Spines
In desert plants like Opuntia (prickly pear), leaves are modified into spines to reduce water loss through transpiration. The flattened stem takes over the photosynthetic function.
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