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Phosphates an...

Question

Phosphates and nitrates entering a lake cause an explosive growth of algae, this is called

A

Aestivation

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B

Mutualism

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C

Humus

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D

An algal bloom.

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Solution

The correct option is C An algal bloom.
Algal bloom is a rapid increase or accumulation in the population of algae in an acquatic system. The nutrients like potassium and nitrogen are key nutrients for the growth of algae. The presence of these materials and availability of sunlight are key factors for the growth of algae.

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Similar questions

Q. High concentration of nutrients in water, especially nitrates and phosphates, can accelerate which of the following phenomena?

(i) Algal Bloom
(ii) Eutrophication
(iii) Biomagnification

Q. Q55. With reference to Algal Blooms, Consider the following statements:
1. In the favourable environmental conditions, Algae or Phytoplankton may multiply rapidly and form high numbers of cells and this is called an algal bloom.
2. Algal blooms can be of any color
3. Most algal blooms are not harmful but some produce toxins
Which of the above statement(s) is/are correct?

Q. Assertion :Algal blooms occur in nutrient poor water. Reason: Algal blooms make water unfit for human consumption but cause enormous growth of fish.

Q. Assertion :Algal blooms are formed in nutrient-less water. Reason: Algal blooms in water turn it unfit for humans consumption, but cause enormous growth of fish.

Q. How does an algal bloom cause eutrophication of a water body? Name the weed that can grow in such a eutrophic lake.

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