Question # 1

Saliva and urine are used for evaporative cooling by

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Bat

Dogs

Birds

Seals

The collenchymas cells have protoplast and usually lack

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Secondary wall

Vacuole

Middle Lemelta

Primary wall

Pathway of passage of impulse during reflex action is called.

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Reflex

Reflex arc

Stimulus

Membrane potential

In juxtamedullary nephrons additional capillaries extend down to form at.

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Vasa deferontia

Vasa efferetia

Vasa recta

Vasa hecta

Desert ecosystem of Bhakkar and Mian wali is called.

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Thal

Thar

Cholistan

Rohi

In turner syndrome the affected person have set of chromosomes.

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XO

XXY

XYY

XXO

Blue cone monochromacy is also called

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Red - green colour blindness

Red - blue colour blindness

Green - blue colour blindness

Yellow - blue colour blindness

A woman can be bald only when she is

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Homozygous domunant

Heterozygous

Homozygous recessive

Maleness

This type of wood is most resistant to decay and insect attack.

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Heart wood

Sap wood

Cork

Bark

DNA Finger prints can be separated from.

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Plasma

Lymph

Blood

Serum

The category of plants that has adaptation of small and thick leaves to limit water loss is called.

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Hydrophytes

Xerophytes

Aygrophytes

Mesophytes

Which of the following hormones is not released by the anterior pituitary?

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Melanocyte - releasing hormone

Gonadotropin-releasing harmone

Thyroid- stimulating hormone

Growth hormone

The structure which respond are called.

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Effectors

Nerves

Receptors

Sense organs

Which one is parthenogenic fruit.

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Apple

Pine apple

Peach

Mango

Sunkens stomata are found in which of the following group of plants.

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Hydrophytes

xerophytes

Bryophytes

Mesophytes

Hypoblast is mainly presumptive

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Endoderm

Mesoderm

Ectoderm

Blastoderm

The plant hormone that inhibit the growth lateral shoots.

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Cytokine

Auxin

Gibberellin

Ethene

Maximum speed of nerve impulse transmission is

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100 m/s

110 m/s

120 m/s

130 m/s

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