Question # 1

Movement shown by sperms of liver Worts, mosses, forns towards archegonia is a.

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chemotactic movement

Photoactic movement

Chemotropic movement

Phototropic movement

Angular thickenings in their primary walls are present in.

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Parenchyma

Collenchyma

Tracheids

Sclernchyma

A form of air pollution in which airbone acids produced by electric utility plants and other sources fall to Earth in distant regions is

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Acid rain

Basic rain

Heavy rain

Drizzling

A natural process in which surface soil is removed by the action of water or wind is

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Corrosion

Attrition

Erosion

Weathering

___ are indole acetic acid or its variants.

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auxins

Gibberellins

Cytokinine

Ethene

In Pakistan among the animals declared extinct is

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White headed duck

Marbled teal

Houbara Bustard

Crocodile

Green colour blindness is called.

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Deiteranopia

Tritanopia

Protamptoa

colour blind

The biome, which has very fertile soil, rich in organic matter with maximum water holding capacity is.

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Alpine forest

Grassiland

Desert

Temperate deciduous forest

A plant is adapted to remove the flooding of its cells in fresh water.

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Mesophyte

Cactus

Hydrophyte

Xerophyte

If the condon consisted of only two nucleotides, there would be how many possible condons?

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4

8

₂₀

16

The structure which respond are called.

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Effectors

Nerves

Receptors

Sense organs

The average rainfall is between 750 - 1500 mm in

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Temperate deciduous forests

Coniferous alpine and boreal forests

Tropical rain forests

Grassland ecosystem

The perennial plants are bushes or cacti with large shallow root systems in

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Grassland

Deserts

Tundra

Taiga

The wall of trachea(windpipe) and bronchi of man is fernished with a series of incomplete:

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Cartilagenous plates

Chitinous rings

Cartilaginous rings

Muscular rings

They have adaptations for reduced rate of transpiration.

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Halophytes

Hydrophytes

Mesophytes

Xerophytes

Which one of the following is not endotherm.

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Bird

Amphibian

Mammal

Flying insect

The number of linkage group in man is:

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02

23

46

92

Deficiency of vasopressin or ADH by the pituitary gland leads to a disorder in which the patients kidney have lessoned ability to absorb water is:

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Diabetes mellitus

Diabetes insipidus

Goiter

Exophthalmic goiter

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