Question # 1

Earthworm is the ideal example of tubular excretory system called

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Protonephridia

Mesonephridia

Metanephridia

Prenephridia

Hypophosphatemic rickets is an _________ trait.

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X - Linked

Y -Linked

X- and Y linked

An autosomal

The actual reduction division is.

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Meiosis -I

Mitosis

Cytokinesis

Meiosis -II

The rate of heat production is increased by increasing muscle contraction by movement is called.

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Thermoregulation

Shilvering thermogenesis

Non shievering

Thermostat thermogenesis

Neural plate is formed from

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Ectoderm

Endoderm

Mesoderm

Notochord

In 1958, F.C. steward grew a complete carrot plant from tiny piece of.

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Pith

Cortex

Xylem

Phloem

Photoperiodism was first studied by garner and allured in.

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1918

1920

1922

1924

ABO Blood group system in man is encoded by a oolvmorohic gene I on chromosome.

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7

9

10

23

Contractile ring in cytokinesis is formed by

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Tubulin

Actin and Myosin

Keratin

Cyclin

The productivity can be indicated by.

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Consumption of CO2

Consumption of O2

Evolution of CO2

Evolution of N2

The chief nitrogenous waste in birds and reptiles is

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NH3

Urea

Uric Acid

Creatirine

Germ cells in the ovary produce many

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Spermatogonia

Zoospores

Zygospores

Oogonia

Dialysis cleans the blood either by

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Passing it through an artificial kidney

Filtering it within abdomen

Removing the whole blood from body

Both a&b

Germination of some seeds e.g. some lettuce varieties, is promoted by.

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Green light

Blue light

Red light

Violet light

In natural selection, the environment plays role affecting the proportions of gene in .

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Population

Community

Area

Blome

How many types of finches did Darwin collect on Galapagos Island.

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13 types

20 types

25 types

30 types

Histones are positively charged due to an abundance of the basic amino acids

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Arginine

Lysine

Both a & c

Alanine

The release of ovum from the ovary is called.

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Ovulation

Menstruation

follicle atresia

Menace

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