Organisms and Populations questions
349 published questions with worked solutions.
- Pattern of population results in a J-shaped curve obtained in
- If b is represented → Birth rate, if d is represented → Death rate, if dN is represented → Increase or decrease in population...
- Find out the population density when N is 1000 and S is 100 m²
- No population of any species in nature has its disposal ...A... resources to permit exponential growth. This leads to competition...
- In which condition the logistic and exponential growth of population have zero growth rate
- Organisms which breed only once in their lifetime
- Periodic departure and return of an individual in a population is known as
- Which option is correct for curve a and b? (graph with carrying-capacity line K; curve 'a' rises steeply without levelling; curve...
- Under normal condition ...A... and ...B... are the most important factors influencing populations density ...C... and ...D......
- Match the following columns | Column-I (Growth model) | Column-II (Also known as) | |---|---| | (A) Logistic growth | (1) Sigmoid...
- The logistic population growth model dN/dt = rN(K-N/N), describes a populations growth when an upper limit to growth is assumed....
- In ... phase population adopt itself to new environment and starts to increase its number
- I. Population evolve to maximise their reproductive fitness, also called Darwinian reproductive fitness (higher r value), in the...
- Interspecific interactions arise from the interaction of
- Predation is
- Predators also help in ...A... species diversity in a community, by ...B... the intensity of competition among competing prey...
- Biological control methods adopted in agriculture pest control are based on the
- Competition is best defined as a process in which the fitness of one species (measured in terms of its 'r' the intrinsic rate of...
- Interspecific interaction could be
- 'Two closely related species competing for same resources cannot co-exist indefinately'. This law is also called
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