12th Class Biology MCQS Support and Movement

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The concentrations of cell bodies of neuron are
Dendrites
Axons
Nodules
Ganglia

In myelinated neurons the impulse jumps from node to node (node of Ranvier) This is called
Saltatory impulse
None of these
Jumping impulse
Myelinated impulse

The main transmitter for synapses that lie outside the central nervous system is
Adrenaline
Dopamine
Serotonin
Acetylcholine

Digitigrade mammals tend to walk on their
Tips of toes
Digits
None of these
Soles

Excess MSH is secreted in
Addison’s disease
Alzheimer’s disease
Parkinson’s disease
Grave’s disease

Shifts in water-solute balance are managed primarily by:
Respratory system
The urinary system
The circulatory system
Sweating

Auxins promote growth of roots from
Calluses
Layering
Cutting
Both a & b

In case of overheating the body temperature is regulated by:
Less sweating and more urinattion
More sweating and more urination
More sweating and more urination
Less sweating and less urinattion

A cluster of neuron’s cell bodies form
Cyst
Swelling
Lump
Ganglia

Bipedal locomotion freed the front appendages which become adapted for
Flight
Both a & b
None of these
Prey capture

Biorhythms are called circadian which means about one day so they are also called
Diurnal tempo
Diurnal pace
Diurnal cadence
Diurnal rhythms

Frogs and toads also walk and hop on land due to strong
Forelimbs
Hindlimbs
Trunk
Head

As distal end humerus forms hinge joint with
Radius
Both a & b
Ulna
Tibia

Abscisic acid can be sprayed on tee crops to regulate
Cone drop
Shoot drop
Leaf drop
Fruit drop

Cardiac muscles are muscles of the
Liver
Stomach
Kidney
Heart

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