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Biology

Biology
In plants which one of the following tissues is dead ?

Parenchyma
Phloem
Sclerenchyma
Collenchyma

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Biology
They are considered to be the most primitive and are surely the first of the vertebrates

Jawless fishes
Reptiles
Frogs
Amphibinas

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Biology
Rain water helps to increase the ____ to some extent.

potash contents
phosphorous contents
nitrogen contents
calcium contents

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Biology
Study of tissue culture is useful for

Air
Non-living
Water
Plant

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Biology
The trypsinogen is an enzyme secreted by the

Liver
Duodenum
Illeum
Pancrease

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Biology
If CO2 concentration in the blood increases, the breathing will

Stop
Increase
Decrease
No effect

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