Question # 1

The basic difference betweenn spermatogenesis and oogenesis is that :

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During spermatogenesis two more polar bodies are produced

The mature ovum is haploid while the sperm is 1n

Spermatogenesis involves mitosis and meiosis, but oogenesis involves meiosis only

In oogenesis, one mature ovum is produced, and in spermatogenesis four mature sperm are produced

________ attach bone to bone and are slightly elastic.

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Ligament

Tendon

Cross bridges

Z- line

In human Eustachian tubes connect middle ear with

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Nose

Eye

Throat

Brain

What would be expected to happen if all the nitrogen-fixing organisms ceased to exist?

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There would be no significant change in number of animals

The total number of biomass would be reduced

All organisms would die out

The nitrogen level of the atmosphere would be increase

There are__ muscles in the human body., most of which occur in pairs.

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650

630

660

645

The process during which potassium and hydrogen ions and some toxic substances are put into urine is called:

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Tubular secretion

Reabsorption

Filtration

Countercurrent multiplication

Th elateal walls of the chest cavity of man are composed of the:

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Ribs

Intercostals Muscles

Ribs and intercoastal muscles

Ribs ,Intercostals Muscles & diaphragm

Which of the following behaves like normal cells.

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Benign tumor

Cancer

Gall

Malignant tumor

Cucumber, tomato, garden pea, maize, cotton are example of.

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Short day plant

Day natural plant

Long day plant

Night natural plant

Activation of sweat glands to produce sweat from evaporative cooling is a type of adaptation.

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Structural

Physiological

Behavioural

None of these

The enzyme luciferase is produced by an insert commonly known as the.

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House fly

Butter fly

Caddis fly

Fire fly

As CFC_s rise to the atmosphere ultraviolet rays release

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Fluorine

Chlorine

Carbon

Hydrogen

During which stage chromosomes are doubling

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G2 Phase

G1 phase

S-Phase

G0 Phase

The protective coat which surrounds the embryo is known as:

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Amnion

Chorion

Allantosis

Chorio Allantoic

Thick filament in myofibril is made up of

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Myosin

actin

Tropomyosin

Troponin

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

Ethene induce flowering in

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Banana

Rose

Pine apple

Orange

The stabbing pain in leg is

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Arthritis

Herniation

Sciatica

Spondylosis

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