Question # 1

All the food chains begin with.

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Producers

Primary consumers

Secondary consumers

Decomposers

Which prosess is characterized by movement and rearrangement of cells in the embryo

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Blastulation

None of these

Neurulation

Gastrulation

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

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Vector

Phage

Bacterium

Fungus

Temperature around 4^oC stimulates the production of.

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Florigen

Vernalin

Ethene

Auxins

Opening of flower bud floows.

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Photonasty

epinasty

Haptonasty

Hyponasty

In the double helix of DNA adenine forms two hydrogen bonds with

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Thymine

Guanine

Cytosine

Uracil

_______ regulates the kidney's retention of water.

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Prolactin

Oxytocin

Thyroxin

Vasopressin (ADN)

Primary growth in plants is caused by.

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Apical meristem

Intercalary meristem

Lateral meristem

Rib meristem

The disease caused by low calcium in blood is called.

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Tetanus

Cramp

sciatica

Tetany

All of the following are day neutral plants except.

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Pea

Wheat

Maize

Cotton

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

In 1882, chromosomes were first observed by.

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John Brown

T.H.Morgan

Walter fleming

Walther sutton

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

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rRNA

tRNA

mRNA

snRNA

The tumours which are of small size and localized are

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Bengin

Malignant

Gentle

Nasty

Kohler used chimpanzee to prove

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Habituation

Imprinting

Insight learning

Latent learning

Human body temperatrue is controlled by.

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Hypothalamus

Pons

Cerebellum

Medulla

The supracoracold muscles provide power for the

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Upward stroke

Downward stroke

Recovery Stroke

Neutral stroke

In living thing, the behavior activities occurs at regulars intervals which are called.

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diumal rhythms

Blorhythms

Circannual

Orcadian

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