Question # 1

What is greatest threat to biodiversity on this planet?

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Habitat loss

Deforestation

Overpopulation

B and C

___________ tissue are thick walled dead cells.

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Collenchyma

Schevenchyma

Parenchyma

None

In sparrows malaria is spread by

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Culex mosquito

Anopheles mosquito

Marshy areas

Any mosquito

The size of a virus is _____________

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40-50 nm

20-40 nm

10-40 nm

30-50 nm

All ............. cells are always performing functions.

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Living

Non-living

Both

None

Which of following helps in lowering blood cholesterol and sugar levels?

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Roughage

Lipids

Vitamin

Carbohydrates

Capillaries are ............ micrometer in diameter.

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7-8 micrometer

8-10 micrometer

8-14 micrometer

7-10 micrometer

Cytokinesis in animals take place by:

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Furrow

Phragmoplast

Telophase

None of these

In most plants, the food is transported in the form of:

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Glucose

Sucrose

Starch

Proteins

The term wildlife covers ____________

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All non-cultivated

All non domesticated

Both a & b

None

How many elements maek 99% of the total mass.

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Four

Six

Eight

Ten

Cytoplasm is composed of _______________water.

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10%

30%

60%

90%

Chloroplast is bounded by ................ membrane.

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Single

Double

Triple

None

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