Question # 1

Selective weed killer

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2-4 D

I AA

NAA

IPA

In succesion lithoseres takes place on:

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Sand

Water

Forest floor

Bare rocks

In plants which light enhances cell division.

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Infra red

Blue

Red

green

In cats the dominant allele W not only makes pure white but also causes

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Black spots

Brown spots

Deafness

Blindness

Each muscle fibre contains a large number of myofibrils having a diameter of

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1 - 2 mm

1 - 5 mm

2 - 4 mm

3 - 7 mm

Number of ammonia molecules required to produce one molecule of urea is.

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1

2

3

4

Principles of geology was published by.

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Darwin

Lyell

Linnaeus

Lamarck

Flowering is induced in pineapple by growth hormone called.

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Gibbereiline

Abscisic acid

Ethene

Cytokinins

Which hormone is chemically steroid .

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ADH

Corticosherone

Insulin

Thyoxine

Which animal shows digitigrade mode of locomotion.

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Bear

Dear

Rabbit

Horse

Advantage of pecking orders is to:

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Avoids injury to the strong animals

Protect territory

Find suitable mate

Assign specific role to individual subordinates

Which one the following structures of kidney is involved in the production of concentrated rein.

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Glomerulus

Juxtamedullary nephron

Cortical nephron

Vasa recta

DNA changes are called mutations and the organisms that have undergone such changes are called

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Wild types

Changer

Mutants

Transmutants

Galls are growth on a plant that are induced by

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Ticks

Protozoons

Parasites

Fungi

What will be the age of willow tree 10 centimeter long and 70 centimeter in diameter

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40 years

50 years

60 years

70 years

Cucumber, tomato, garden pea, maize, cotton are example of.

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Short day plant

Day natural plant

Long day plant

Night natural plant

Which one of the following is endangered in Pakistan.

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Indian rhino

Indus Dolphin

tiger

Cheer pheasant

DNA finger prints can also be used as

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Crime evidence

Forensic evidence

Litigation evidence

Offence evidence

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