Question # 1

Which one is not a vestigial organ of human being.

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Appendix

coccyx

eye lid

Nictitating membranes

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

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Sulphates

Carbonates

Phosphates

Nitrates

Chiasmata formation take place duirng.

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Leptotene

diakinesis

Diplotene

Pachytene

Branch of biology which deals with the study of abnormal development and their cause is called.

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Embryology

Teratology

Gerontology

Microcephaly

Luteinizing hormone induces.

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Flowering

Vernalization

Ovulation

Menopause

Archaebacteria tolerate temperatures up to

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10^oC

40^oC

67^oC

120^oC

Hyponasty is caused by

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Auxin

Gibberellins

Abscisic acid

Cytokinins

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

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Glomerulus

Henle's loop

Bowman's capsule

Pelvis

Morphological characteristics of chromosome are collectively called.

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Holotype

Karyokinesis

Karyotype

Neotype

The bacteria in the root nodules fix nitrogen and convert it into

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Nitrate

Nitrite

Amino Acid

Ammonia

Lithosphere includes.

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Air

Water

Gases

Earth soil

In 1901, ABO grop system was discovered by.

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Punnet

Karl Landsteiner

Wiener

Bern Stein

Bats and humming bird are called

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Heterotherms

Ectotherms

Endotherms

poikilotherms

The productivity of aquatic ecosystem is determined by light and

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CO2

Temperature

Nutrients

Water

Each tRNA has a sequence of three bases called anticodon which is complementary to codon of

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rRNA

tRNA

mRNA

snRNA

A monochromat can perceive

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Three colours

Yellow colours

Only ane colour

Two colours

What would be expected to happen if all the nitrogen-fixing organisms ceased to exist?

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There would be no significant change in number of animals

The total number of biomass would be reduced

All organisms would die out

The nitrogen level of the atmosphere would be increase

The internal hydrostatic pressure in plants is.

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Root

Turgor

Osmotic

Solute

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