Question # 1

In which type of ecosystem in the smallest fraction of nutrients present in soil.

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Forest

Savanna

Grass land

Desert

Asexual reproduction requires only a single parental organism which gives rise to offspring by

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Mitotic cell division

Meiotic cell division

Both a and b

None of these

In plants movement in response to stimulus of touch is called.

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Phototactie

Chemotatic

Thigmotopism

Nyctinasty

The incidence of calcium oxalate type stones are.

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40%

50%

60%

70%

The causes of green house effect are:

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Over urbanization

Deforestation

Industrialization

All of them

Protonopia is

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Red blindness

Blue blindness

Green blindness

Brown blindness

Recombinant DNA is introduced into the host cell by means of a.

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Vector

Phage

Bacterium

Fungus

A gene with initiation codon, which encodes the amino acid methionine is.

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UAA

UAG

AUG

UGG

In each case succession is initiated by a few hardy invaders called.

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Starters

Pioneers

Decomposers

Climax community

Opening of flower bud follows.

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Photonasty

Hyponasty

Epinasty

Haptonasty

Genetic code is a combination of 3 nucleotides in DNA which specify a particular

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Amino acid

Fatty acid

Vitamin

Steriod

The hormones which controls the development of male secondary sexual characteristics during puberty is.

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Progesterone

Testosterone

Estrogen

Thyroxin

ABO system has four different phenotypes which are distinct from each other on the basis of specific antigens on the surface of

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Mitochondria

Gogli bodies

RBC

Centrioles

During gastrulation the blastoderm splits into two layers, an upper layer of cells is called.

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Hypoblast

Area pellucida

Epiblast

Area Opaca

Walter Fleming first discovered chromosomes in the dividing cells of.

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Frog larvae

Sea urchin larvae

Insect larvae

Salamander larvae

_______ regulates the kidney's retention of water.

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Prolactin

Oxytocin

Thyroxin

Vasopressin (ADN)

The disease caused by low calcium in blood is called.

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Tetanus

Cramp

sciatica

Tetany

Bilirubin damages brain cells and turn the skin and whites of eyes yellow, condition is known as.

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Hepatitis

Leukamia

Jaundice

Botulism

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