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Biology

Biology
One of the following is most suitable for study of mutations

Tetraploids
Diploids
Haploids
Polyploid

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Biology
Anaemia is caused because of deficiency of which of the following?

Calcium
Sodium
Iron
Cobalt

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Biology
Virus is not regarded as a cell,because

It is anactive unless it finds a host to multiply
Most of the cellular activity is absent
All of these
The genetic material does not replicate on its own

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Biology
Which one of the following organisms is dependent on saprophytic mode of nutrition?

Riccia
Ulothrix
Agaricus
Cladophora

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Biology
Which cell division of phase of cell division maintains the chromosomes number constant from generation to generation?

Prophase I
Meiosis
Zygotene
Mitosis

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Biology
Which of the following is a work done by the placenta tissue in humans?

Provide nutrition to the embryo
Remove waste matter from the embryo
Support the embryo
Removes waste matter from the embryo and provide nutrition to the embryo

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