During ecological succession:
Correct answer: C. The gradual and predictable change in species composition occurs in a given area
- A. The numbers and types of animals remain constant
- B. The changes lead to a community that is in near equilibrium with the environment and is called pioneer community
- C. The gradual and predictable change in species composition occurs in a given area
- D. The establishment of a new biotic community is very fast in its primary phase
Explanation
Biotic or ecological succession is the natural development of a series of biotic communities at the same site, one after the other till a climax community develops which does not change further because it is in perfect harmony with the environment of the area. The change is orderly and sequential. There is a parallel change in the physical environment. During an ecological succession, the number and types of animals go on increasing with time. The community that is in near equilibrium with the environment is called the climax community. The establishment of a new biotic community is slow in its primary phase but gradually becomes fast in its secondary phase.
Last updated
About Man and His Environment
Ecosystems include biotic and abiotic components, food chains and webs, energy flow, nutrient cycles, populations and ecological relationships. Pollution and conservation cover air, water, soil and noise pollution, their effects on organisms, biodiversity loss, protected areas, sustainable resource use and methods for reducing environmental damage.
Practise Man and His Environment
382 free Man and His Environment MCQs from Biology, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Exams that ask Biology questions like this
Biology is on 6 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
Related questions
Conversion of ammonium into nitrates is:
In a forest, there are a lot of plants; trees, shrubs, and herbs. What will the Palm trees face if they grow in the same forest?
The animals that feed on organic debris from decomposing plants and animals are called:
Process ensuring the survival of species over long periods of time, even though individual members of the species die.
The position of an organism in a food chain of an ecosystem called: