Question # 1

From beginning of the third month of pregnancy's, the human embryo is referred to as the.

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Foetus

Neonate

Placenta

Young one

The idea of endosymbiont was purposed by.

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Cuvler

Lyell

Malthus

Marglls

The average rainfall is between 750 - 1500 mm in

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Temperate deciduous forests

Coniferous alpine and boreal forests

Tropical rain forests

Grassland ecosystem

Information back from the control centre to the effectors as done by ______________ nerve path way.

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Afferent

Efferent

Both

None of these

A group of bacteria that can tolerate temperate upto 120 ^oC

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Eubacteria

Mycoplasma

Archaebacteria

E.Coli

Imprinting is best known in birds such as

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Geese

Ducks

Chickens

All a,b,and c

In tropical and subtropical grassland rain reaches about

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1500 mm

2000 mm

2500 mm

3000 mm

The outer layer of the blastocyst, which laterattaches tothe uterus , is:

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Deciduas

Trophoblast

Ammion

Inner cell mass

An ezyme that can be used to treat a human Iysosome storage disease is

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B-galactosidase

a-galactosidase

Glucosidase

Invertase

Which one of the following is endangered in Pakistan.

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Indian rhino

Indus Dolphin

tiger

Cheer pheasant

The basic difference betweenn spermatogenesis and oogenesis is that :

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During spermatogenesis two more polar bodies are produced

The mature ovum is haploid while the sperm is 1n

Spermatogenesis involves mitosis and meiosis, but oogenesis involves meiosis only

In oogenesis, one mature ovum is produced, and in spermatogenesis four mature sperm are produced

A central role for chromosomes in heredity was first suggested in 1900 by.

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Karl correns

W. Sutton

F. Griffiths

T.H.Morgan

Osteomalacia includes a number of disorders in which bones receive inadequate

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Water

Oxygen

Mineral

Blood

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

Flagella may have arisen through the ingestion of prokaryotes similar to spiral shaped bacteria called.

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E. Coli

Streptococcus

spirochete

Rhizobium

Oxone molecule is made up by binding of three atoms of

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Nitrogen

Oxygen

Hydrogen

Carbon

The stand which elongates towards the replication fork is.

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Leading

Lagging

Okazaki

Primer

Which hormone is chemically steroid .

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ADH

Corticosherone

Insulin

Thyoxine

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