Question # 1

Excess MSH is secreted in

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Addison's disease

Parkinson's disease

Grave's disease

Alzheimer's disease

In neurons the message is transmitted across synapse in the form of chemical messenger called.

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Nerve impulse

Synaptic vesicle

Neurotransmitters

Communlaction

Galls are growth on a plant that are induced by

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Ticks

Protozoons

Parasites

Fungi

In terrestrial plants major mechanical stress is imposed by.

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Gravity

Temperature

Wind

Soil

Action of the venus fly trap is

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Nyctinasty

Photonasty

Haptonasty

Thermonasty

Endocrine gland secrete

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Harmones

Salts

Enzymes

Mucous

Selective weed killer

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2-4 D

I AA

NAA

IPA

The disease caused due to destruction of adrenal cortex is.

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Cushing

Diabetes

Addison

Alzheimer

Digitigrade mammals tend to walk on their

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Soles

Digits

Tips of toes

None of these

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

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650

630

660

645

Which animal shows digitigrade mode of locomotion.

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Bear

Dear

Rabbit

Horse

Rodents respond to alarm call by other in their group is an example of behaviour termed as

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Imprinting

Habitation

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Which of the following statements conserning the role of Ca⁺² inthe contraction of skeletal muscle is correct?

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The mitochondria act as a store of Ca⁺²for the contractile process

Ca⁺²entry across the plasma membrane is important in sustaining the contraction of skeletal muscle

A rise in inter cellular Ca⁺²allows actin to interact with myosin

The tension of a skeletal muscle fiber is partly regulated by G proteins muscle

Hyponastic movements occur in response to.

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Contact

Chemical

Temperature

Water

The internal hydrostatic pressure in plants is.

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Root

Turgor

Osmotic

Solute

In myelinated neurons the impulse jumps from node to node (node of Ranvier) This is called

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Myelinated impulse

Jumping impulse

Saltatory impulse

None of these

In case of overheating the body temperature is regulated by:

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More sweating and more urination

Less sweating and more urinattion

Less sweating and less urinattion

Mature bone cells are called as

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osteocytes

Chondrocytes

Osteoblasts

Blastocytes

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Biology FSC Part 2 Chapter 16 Online MCQ's Test MCQs With Answers

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