Question # 1

A collection of bacterial and phage viruses clones containing a particular segment of DNA from the source cell is called.

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Expressing system

Genome

Genomic library

Recombinant DNA

The most critical phase of mitosis, which ensures equal distribution of chromatids in the daughter cells is.

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Prophase

Tele phase

Meta phase

Anaphase

The animals that lay shelled eggs to protect the developing embryo are called.

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Oviparous

Ovovlviparous

Viviparous

Egg laying mammals

Coniferous forest located at high attitude are called.

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Boreal

Alpine

Talga

Prailes

Adult transgenic tobacco plants glowed when sprayed with the substrate

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Luciferon

Luciferin

Luciferol

Luciferase

Annual rain fall in deserts is less than

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25 to 50 cm

10 to 22 cm

15 - 25 cm

20 to 40 cm

Which enzyme acts as molecular scissors.

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DNA ligase

DNA polymerase

RNA polymerase

Restriction endonuclease

Identical twins result from the fertilization of:

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One ovum by the sperm

One ovum by the two sperms

Two ova by two sperms

Two ova by one sperm

Who proposed the term 'Niche' in ecology.

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Haeckel

Grinnell

Elton

Darwin

The first restriction enzyme was isolated by.

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Kary mulis

Hamilton O smith

Maxam Gilbert

Sanger

The protective coat which surrounds the embryo is known as:

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Amnion

Chorion

Allantosis

Chorio Allantoic

Modern man is called

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Homo erectus

Homo habilis

Homo sapiens

Homo neanderthalensis

In xerosere, polytrichum and tortula represent.

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Herbaceous stage

Moss stage

Follage lichen stage

Crustose lichen stage

The distinct levels of food chain are called.

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Food chain

Food Web

Trophic level

Energy pyramid

Walter Fleming first discovered chromosomes in the dividing cells of.

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Frog larvae

Sea urchin larvae

Insect larvae

Salamander larvae

Interphase can further be divided into

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G₁-phase,S-phase and G₂-phase

G₁-phase,G₂-phase and G₃-phase

S₁-phase,S₂-phase and S₃-phase

S₁-phase,G-phase and S₂-phase

In root nodules, the organisms present are.

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Bacteria

Algae

Fungi

Cyapobacteria

Bats and humming bird are called

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Heterotherms

Ectotherms

Endotherms

poikilotherms

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