Approximately, what number of species have been identified, named and studied?

1. 1.0 million 2. 1.5 million
3. 1.7 million 4. 2.0 million

Subtopic:  Introduction & Types |
 54%
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The greatest biodiversity on the earth is found in:

1. African grasslands
2. Amazonian rain forest in South America
3. Western Ghats in India
4. Nile delta in Egypt
Subtopic:  Biodiversity Patterns |
 94%
From NCERT
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The relation between species richness and area for a wide variety of taxa on alogarithmic scale is a:

 
1. rectangular hyperbola 2. straight line
3. sigmoid curve 4. circular circle

Subtopic:  Biodiversity Patterns |
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The total number of biodiversity hotspots in the world is:

1.252.17
3.344.51

Subtopic:  In Situ Conservation of Biodiversity |
 92%
From NCERT
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Biodiversity loss is now one of the world’s most pressing crisis. The primary reason for this is that:

1. we cannot do anything about it
2. we are not responsible for this loss
3. we still do not know its entire extent
4. it is only affecting the developing countries
Subtopic:  Importance of Biodiversity | Loss of Biodiversity |
 72%
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Between community, diversity is known as:

1.alpha diversity2.beta diversity
3.gamma diversity4.delta diversity

Subtopic:  Introduction & Types |
 60%
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Rice grown in Asia is protected from four main diseases by gene received from a single wild rice species that is:
1. Oryza nivara
2. Oryza indica
3. Oryza sativa
4. Oryza orientalis

Subtopic:  Magnitude of Biodiversity |
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Which of the following is a source of an antimalarial drug?

1.Papaver somniferum2.Cinchona officinalis
3.Artemesia species4.Both 2 and 3

Subtopic:   Biodiversity Conservation |
 58%
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The bark of the yew tree, Taxus brevifolia, is source of:
1. an antileprosy drug
2. an anticancer drug
3. a broad spectrum antibiotic
4. an analgesic and sedative

Subtopic:   Biodiversity Conservation |
 59%
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A plant, that has invaded many forest lands in India and is also known as Spanish Flag or Red sage, is:

1. Lantana camara 2. Eicchornia
3. Parthenium argentatum 4. Argemone mexicana
Subtopic:  Loss of Biodiversity |
 51%
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