Assertion: Red algae contribute in producing coral reefs.
Reason: Some red algae secrete and deposit calcium carbonate over their walls.

If both Assertion and Reason are true and Reason is the correct explanation of Assertion

If both Assertion and Reason are true but Reason is not the correct explanation of Assertion

If Assertion is true but Reason is false

If both Assertion and Reason are false.

Solution

If both Assertion and Reason are true and Reason is the correct explanation of Assertion

In some species of red algae called coralline algae. the cell walls become hardened with calcium carbonate. These algae hence important for the formation of coral reefs.

Coral reefs are formed through the accumulation of calcareous exoskeletons of coral animals, calcareous red algae and molluses. They form the foundation of reefs by secreting a calcium carbonate skeleton that provides protection for the coral polyps. Calcium carbonate is secreted continuously by the coral colony.

Some More Questions From Biodiversity and Conservation Chapter

According to the IUCN (2004), the total number of plant and animal species described so far is slightly more than :

Plants constitute what % of the total species of organisms (plants and animals) recorded so far ?

Which is the most species rich taxonomic group among animal ?

The most richest and the most threatened reservoirs of plants and animal life on earth are called :

The regions of earth where a large number of species are found, are called :

‘Chipko movement’ was started to conserve :

1. Sardar Sarovar Dam is built on river......... .
2. Number of wildlife sanctuaries in India are ......... .

3. The bird “Dodo” became extinct because of......... .

4. First Earth summit was held at.........and aimed at.........

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Biodiversity And Conservation

Some More Questions From Biodiversity and Conservation Chapter

According to the IUCN (2004), the total number of plant and animal species described so far is slightly more than :

Plants constitute what % of the total species of organisms (plants and animals) recorded so far ?

Which is the most species rich taxonomic group among animal ?

The most richest and the most threatened reservoirs of plants and animal life on earth are called :

The regions of earth where a large number of species are found, are called :

‘Chipko movement’ was started to conserve :

1. Sardar Sarovar Dam is built on river......... .
2. Number of wildlife sanctuaries in India are ......... .

3. The bird “Dodo” became extinct because of......... .

4. First Earth summit was held at.........and aimed at.........

Write “True” or “False” :

The practice of controlling the establishment, growth, composition, health, and quality of forests to meet diverse needs and values

Coin one word for the following statements : Genetic variations between distinct populations of same species.

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For Daily Free Study Material Join wiredfaculty

Biodiversity And Conservation

Some More Questions From Biodiversity and Conservation Chapter

According to the IUCN (2004), the total number of plant and animal species described so far is slightly more than :

Plants constitute what % of the total species of organisms (plants and animals) recorded so far ?

Which is the most species rich taxonomic group among animal ?

The most richest and the most threatened reservoirs of plants and animal life on earth are called :

The regions of earth where a large number of species are found, are called :

‘Chipko movement’ was started to conserve :

1. Sardar Sarovar Dam is built on river......... . 2. Number of wildlife sanctuaries in India are ......... . 3. The bird “Dodo” became extinct because of......... . 4. First Earth summit was held at.........and aimed at.........

Write “True” or “False” :

The practice of controlling the establishment, growth, composition, health, and quality of forests to meet diverse needs and values

Coin one word for the following statements : Genetic variations between distinct populations of same species.

Mock Test Series

NCERT Sample Papers

Entrance Exams Preparation

1. Sardar Sarovar Dam is built on river......... .
2. Number of wildlife sanctuaries in India are ......... .

3. The bird “Dodo” became extinct because of......... .

4. First Earth summit was held at.........and aimed at.........