Question # 1

The leaves with very small surface area, are found in.

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Hydrophytes

Xerophytes

Sciophytes

Mesophytes

Kohler used chimpanzee to prove

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Habituation

Imprinting

Insight learning

Latent learning

At the time of independence in 1947 the population of pakistan was

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10 m

20 m

25.7 m

32.5 m

Labour pains are induced by a hormone.

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ACTH

Oxytocin

Progesterone

Corticosteroid

Auxins promote growth of roots from

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Cutting

Calluses

Both a & b

Layering

This condition appears as a result of point mutation.

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Down syndrome

Turner syndrome

Sickel cell Anaemia

Klinefelter syndrome

Chilas has major terrestrial ecosystem.

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Deciduous forest

Alpine Forest

Grass land

Tundra

During elongation, the cell volume increase upto.

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50 fold

100 fold

150 fold

200 fold

Mitosis may be divided into two phases

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Karyikinesis & cytokinesis

Karyikinesis & diakinesis

Diakinesis & cytokinesis

Exokinesis & endokinesis

The internal hydrostatic pressure in plants is.

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Root

Turgor

Osmotic

Solute

Average loss of blood during birth in human female is about .

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150 cm3

250 cm3

350 cm3

450 cm3

All of the following are day neutral plants except.

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Pea

Wheat

Maize

Cotton

It is estimated that human genome could take an encyclopaedia of 200 volumes each with

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10 pages

100 pages

1000 pages

10,000 pages

When the human blood leaves the capillary bed of the tissue, most of the carbon dioxide is inthe form of:

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Carbonic acid

Bicarbonate ions

Carboxylic acids

None of them

PCR takes its name from _________ the enzyme that carries out DNA replication in a cell.

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DNA Polymerase

DNA Ligase

DNA Polymerase II

Restriction enzymes

Each Okazaki fragment is synthesized by.

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RNA Polymerase

DNA polymerase

DNA polymerase I

DNA polymerase III

Which of the following is the most fragile ecosystem.

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Grass land

Wood land

Tundra

Savanna

Genes that code for therapeutic and diagnostic proteins are incorporated into the animal's DNA and the proteins appear in the animal's

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Urine

Blood

Sweat

Milk

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