Question # 1

Adenine and guanine are called

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Purines

Pyrmidines

Both a & b

None of these

Fruit ripening is often accompanied by burst of respiratory activity called.

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Apomixes

Climacteric

Endosperm

Photoperiodism

Opening of flower bud floows.

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Photonasty

epinasty

Haptonasty

Hyponasty

The gens found in a breeding population constitute.

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Genotype

Genome

Gene frequency

Gene pool

The active uptake of sodium ions in the loop of Henle is provided byt he action of hormone.

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Insulin

Adrenaline

Aldosterone

Oxytocin

The disease caused by low calcium in blood is called.

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Tetanus

Cramp

sciatica

Tetany

The sensation of pain is produced by

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Chemoreceptors

Photoreceptors

Nociceptors

Mechanoreceptors

Which one is not desert.

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Thar

Thal

Sahara

Talga

Menstrual cycle is called.

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Menopause

emotinal stress

Menstruation

Malnourishment effect of cycle.

Study of single population's relationship to its environment is called.

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Niche

Autecology

synecology

Predation

Full cell cycle in yeast cells has length of.

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30 minutes

60 minutes

90 minutes

124 minutes

Discharge of egg from the ovary is called.

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Oogenesis

Ovulation

Spermatogenesis

Gametogenesis

The individuals have additional sex chromosome in

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Klinefelter's syndrome

Turner's syndrome

Down's syndrome

Sach's syndrome

The numebr of cervical vertebrae are.

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7

12

33

32

In humans ,MSH(melanocyte-stimulating hormone) ___________

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Regulates primary skin color

Causes the thyroid to produce thyroxin

Governs the rate of tarming

Concentration is very low.

Human lungs are spongy due to the presence of million of:

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Bronchi

Alveoli

Bronchioles

Trachea

A condition in which palatine processes of maxilla and palatine fall to fuse is.

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Microcephaly

Cleft palate

Fused palate

Osteoarthritis

What are significant happening of meiosis.

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Crossing over

Random assortment of chromosome

Linkage

Crossing over and random assortment of chromosomes

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