(B) The introduction of the Nile Perch, an alien predator fish, into Lake Victoria in East Africa led to the extinction of an ecologically unique asse

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(B) The introduction of the Nile Perch, an alien predator fish, into Lake Victoria in East Africa led to the extinction of an ecologically unique assemblage of more than $200$ species of Cichlid fish in the lake.Therefore, $X = \text{Cichlid}$ and $Y = 200$.

Class 12 Biology Biodiversity and Conservation Causes of Biodiversity Losses

Medium

In Lake Victoria of East Africa, more than $Y$ species of $X$ fish became extinct together. Identify $X$ and $Y$.

A
$X = \text{Nile Perch}, Y = 100$
B
$X = \text{Cichlid}, Y = 200$
C
$X = \text{Clarias gariepinus}, Y = 100$
D
$X = \text{Lamprey}, Y = 2000$

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Class 12

Biology Questions

Chapter

Biodiversity and Conservation

Subtopic

Causes of Biodiversity Losses

Exotic species are also called
$I.$ introduced species
$II.$ alien species
$III.$ non-indigenous species
$IV.$ non-native species
Choose the correct combination

Easy

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Select the incorrect option for water hyacinth (Eichhornia crassipes).

Medium

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Of the four major causes for the loss of biodiversity (Alien species invasion,habitat loss and fragmentation,over-exploitation,and co-extinctions),which according to you is the major cause for the loss of biodiversity? Give reasons in support.

Medium

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If birds at high altitudes are rarely seen or become extinct,which of the following plants associated with them will also become extinct?

Medium

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Assertion: Tropical rain forests are disappearing fast from developing countries such as India.
Reason: No value is attached to these forests because these are poor in biodiversity.

MediumAIIMS 2012

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In Lake Victoria of East Africa, more than $Y$ species of $X$ fish became extinct together. Identify $X$ and $Y$.

Similar Questions

Exotic species are also called$I.$ introduced species$II.$ alien species$III.$ non-indigenous species$IV.$ non-native speciesChoose the correct combination

Select the incorrect option for water hyacinth (Eichhornia crassipes).

Of the four major causes for the loss of biodiversity (Alien species invasion,habitat loss and fragmentation,over-exploitation,and co-extinctions),which according to you is the major cause for the loss of biodiversity? Give reasons in support.

If birds at high altitudes are rarely seen or become extinct,which of the following plants associated with them will also become extinct?

Assertion: Tropical rain forests are disappearing fast from developing countries such as India.Reason: No value is attached to these forests because these are poor in biodiversity.

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Exotic species are also called
$I.$ introduced species
$II.$ alien species
$III.$ non-indigenous species
$IV.$ non-native species
Choose the correct combination

Assertion: Tropical rain forests are disappearing fast from developing countries such as India.
Reason: No value is attached to these forests because these are poor in biodiversity.