Question # 1

The first step of krebs cycle is union of acetyl co A with oxaloacetate to form.

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Isocitrate

Citrate

Malate

Alpha ketoglutarate

In root nodules bacteria convert nitrogen into.

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Ammonia

Nitrate

Urea

Nitrite

Which of the following is a motile coclenterate

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Hydra

Obelia

Jelly fish

Corals

Female gametophyte in flowering plants is

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Ovary

Archegonium

Seed

Embryo sac

Th polyp is reduced and medusa is dominant.

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Jelly fish

Hydra

Sea anemon

Obelia

The length of jejunum is about.

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2.8 m

2.4 m

1.4 m

2 m

Carbon di oxide enters the leaves through.

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epidermis

Cuticle

Stomata

Air space

First discovered antibiotic

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Lovastatin

Cyclosporine

Penicillin

Ergotine

The number of oxidation steps during one Krebs. cycle are.

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02

03

04

05

A group of living organisms of the same species located in the same place and time is called.

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Community

Population

Induvial

Biome

Lock and key model was proposed by

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Koshland

Emil Fisher

Watson

Flemming

A dominant plant of the deciduous forest is the

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Cactus

Acacia

euphorbia

Taxusbaccata

Inheritance of skin colour in man is controlled by eight pairs of genes , which are:

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Linked

Codominent

Multiple alleles

Assorting independently

Temperate deciduous forest are located in Pakistan at.

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Chilas

Mian wali

Shogran

Sindh

Abdomen has a peritoneal cavity, lined by a thin epithelium called.

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ectoderm

endoerm

Peritoneum

Epidermis

The protein filament whihc binds to the calcium is

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Actin

Myosin

Troponin

Tropomyosin

Fruit development without fertilization is

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Dormancy

Climacteric

Parthenocarpy

Parthenogenesis

the basic functional unit of ecology is

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Niche

Ecosystem

Community

Population

To genome fragment can be separated according to their lengths during .

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Gel electrophoresis

PCR

Cloning

Gene therapy

Hatching period of chick is.

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15 days

18 days

21 days

28 days

The incidence of calcium oxalate type stones are.

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40%

50%

60%

70%

Digitigrade mammals tend to walk on thaeir

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Soles

Digits

Tips of the toes

Tips of the fingers

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