Question # 1

Oxygen content of fresh air are

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200 ml/litre

10 ml/ litre

100 ml / litre

150 ml / litre

Germ theory of disease was formulated by

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Antone Van Leeuwenhoek

Pasteur

Robert Koch

none of above

The study of distribution of animals in nature is called.

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Biodiversity

Zoogeography

Geography

Wild life

There are ...... known species of plants

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120000

227000

360000

412000

The common name of Allium cepa is.

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Piyaz

Bathu

Channa

None of these

During respiratory chain co enzyme Q is oxidized.

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Cytochrome a

Cytochrome b

Cytochrome c

Cytochrome a3

Which one is an example of non vascular plants.

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Rhynia

Psilotum

Adiantum

Marchantis

The sub class that has not primitive mammals is

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Prototherian

Eutherian

Megatheria

None of these

Portuguese man of war is the name used for.

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Physalia

Obelia

Hydra

Aurelia

If non protein part is loosely attached to proteins it is known as.

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Cofactor

Co enzyme

Active site

Holo ezyme

A plant requires nitrogen and sulfur for its

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Cell wall

Enzymes

Starch deposits

DNA replication

The inner soft wall of human uterus is called.

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Ectometrium

Exometriium

Endometrium

Myoul

In each case succession is initiated by a few hardy invaders called.

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Starters

Pioneers

Decomposers

Climax community

Post mitotic cells can exist the cell cycle during.

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G1 Phase

G0 phase

G3 phase

S phase

The abiotic component of an ecosystem is.

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Temperature

Producer

Consumer

Decomposer

The first restriction enzyme was isolated by

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Kary mulis

Hamilton O. smith

Sagar

Maxam gilbret

Which one of the following is endangered in Pakistan.

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Indian rhino

Indus Dolphin

tiger

Cheer pheasant

What would be expected to happen if all the nitrogen-fixing organisms ceased to exist?

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There would be no significant change in number of animals

The total number of biomass would be reduced

All organisms would die out

The nitrogen level of the atmosphere would be increase

Chiasmata formation take place duirng.

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Leptotene

diakinesis

Diplotene

Pachytene

The numebr of cervical vertebrae are.

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7

12

33

32

As distal end humerus forms hinge joint with

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Radius

Ulna

Tibia

Both a & b

If all members of a population are homozygous for the same allele that allele is said to be

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Multiple allele

Jumping gene

Fixed in the gene

Perfect gene

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