Question # 1

Diffused nervous system is found in

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Poriferans

Platyhelminthes

Cnidarians

annelids

Perhaps the most fragile of all the biomes, because of its short growing season is.

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Tundra

Desert

Grass land

Temperate deciduous forest

In Griffith experiment mice developed pneumonia when they were injected with:

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R-type bacteria

Heat killed S-type bacteria

Heat killed R-type bases

Heat killed S-type becteria along with live R-type becteria

Fresh water flatworms excrete

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Very dilute urine

Very concentrated urine

Slightly concentrated

Moderately concentrated urine

A full set of genes of an individual is called.

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Genome

Genotype

Karyotype

Dominance

Who proposed the term 'Niche' in ecology.

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Haeckel

Grinnell

Elton

Darwin

Which neurons have long axon.

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Sensory

Motor

Cell body

Associateive

Which one of the following is endangered in Pakistan.

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Indian rhino

Indus Dolphin

tiger

Cheer pheasant

The gene that triggers developmental process towards maleness is.

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TFM

MODY

SRY

BOB

A form of air pollution in which airbone acids produced by electric utility plants and other sources fall to Earth in distant regions is

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Acid rain

Basic rain

Heavy rain

Drizzling

A dominant plant of the deciduous forest is the

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Cactus

Acacia

euphorbia

Taxusbaccata

Unspecialized cells, neoblast are always present in body of.

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Salamander

Planaria

Lizard

Newt

Which statement defines the net primary production in an ecosystem over a given time period?

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The total amount of organic matter in the plants in excess of that used in respiration

The total amount of organic matter used in respiration by all the organisms present

The total amount of photosynthesis product from all plants

The total amount of organic matter in all organisms present

Chromosomal theory of inheritance was first formulated by.

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Karl Correns

T.H.Morgan

W. Sutton

Carvin Bridges

Tissue culture and cloning seek help through.

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Mitosis

Meiosis

endomitosis

Karyokinesis

Soilerosion, fire and water percolation down through the soil cause loss of.

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Sulphates

Carbonates

Phosphates

Nitrates

In the zone of elongation, the volume of the cells increase upto.

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100 times

150 times

200 times

250 times

In each Nephron inner end form a cup shaped swelling called.

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Glomerulus

Henle's loop

Bowman's capsule

Pelvis

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