Question # 1

Which of the following is a 'start' codon

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AUG

UAG

UAA

UGA

The most toxic nitrogenous waste in animals is.

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Uric acid

ammonia

Creatinine

Urea

In the double helix of DNA adenine forms two hydrogen bonds with

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Thymine

Guanine

Cytosine

Uracil

a succulent plant has water stored in tissue.

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Cacti

Moss

Yarrow

Spruce

How many different kinds of the gametes will be formed by an ndividual , who is hetrozygous for four gene pairs:

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8

16

20

30

Oxygen carryiing capacity of blood does not depend upon:

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Particle pressure of CO₂

Particle pressure of O₂

Height from sea level

Quantity of blood

Amphibians wriggle along the belly on the gound with the help of segmentally arranged

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Muscles

Scales

Skin patches

Both a & b

All the food chains begin with.

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Producers

Primary consumers

Secondary consumers

Decomposers

Fertilizations is the process which leads to the union of.

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Individuals

Gametes

Eggs

Sperms

Chiasmata formation take place duirng.

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Leptotene

diakinesis

Diplotene

Pachytene

A plant has a growth pattern called.

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Open growth

Meristem

Growing point

Apical

Syphilis is caused by a spirochete named as.

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Nisseria gonorrhea

Theponemapallidum

Escherichia coli

Hypomicrobium

The best way to increase food production from ecosystem view point is:

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To increase cultivable land by clearing forest

Use of excessive fertilizers

Use of high quality pesticides

Use of genetically improved varieties of seeds

Cystic fibrosis patients lack a gene that codes for trans membrane carrier of.

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Chloride ion

Calcium ion

Sodium ion

Magnesium ion

The productivity can be indicated by.

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Consumption of CO2

Consumption of O2

Evolution of CO2

Evolution of N2

The urine leaves the body during urination from bladder through a tube called.

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Pelvis

Urethra

Ureter

Medulla

Cacti and Euphorbia are the desert plants which store water in their.

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Fleshy leaves

Freshy stems

Freshy roots

Freshy buds

A gene with multiple phenotypic effect is.

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Polygenic

Bombay type

Pleiotropic

Monogenic

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