Question # 1

Animals excreting urea are called.

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Ammonotelic

Ureotelic

Uricotelic

Aminotelic

In human only one ovum is usually discharged from the ovary at one time this phenomenon is called

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Ovulation

Menstruation

Oestrous

Apomixes

Lithosphere includes.

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Air

Water

Gases

Earth soil

In myelinated neurons, the impulse jumps form node to node and is called.

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Saltatory impulse

synapse

Nerve impulse

synapsis

Most cartilaginous fishes possess salt execrating organs known as the

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Coecal gland

Foetal gland

Rectal gland

Sebaceous gland

During non conducting state the neuron membrane is permeable to efflux of.

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Cl-

Ca

Ca+

Na+

K+

In myelinated neurons the impulse jumps from node to node (node of Ranvier) This is called

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Myelinated impulse

Jumping impulse

Saltatory impulse

None of these

Coniferous forests located at high latitude are called

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Alpine

Boreal

Arctic

Both a & b

The ultimate source of change is.

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Evolution

Mutation

Genetic drift

Migration

Expression of a trait is termed as

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Genotype

Phenotype

Dominance

Wild type

Desert ecosystem of Bhakkar and Mian wali is called.

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Thal

Thar

Cholistan

Rohi

In the chick the mesodermal cells migrate and caudally from both sides and create a mid line thickening called

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Primitive streak

Excretion

Ultra-streak

Blastoderm

Ethene induce flowering in

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Banana

Rose

Pine apple

Orange

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

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Starters

Pioneers

Decomposers

Climax community

A general formula called the hard-Weinberg equation is used for calculating the frequencies of alleles and genotypes in populations at

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Equilibrium

Balance

Stability

Poise

Among the birds Drawin collected 13 types of

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Finshes

Robins

Ferrets

Pterodactyls

What does not happen during inspiration in man?

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Intercoatals musles contract

Ribs are elevated

Diphragm becomedome- shaped

Ribs move forwards

Of all the excretory products, the principal one is.

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Ammonia

Urea

Uric Acid

Billrubin

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