Question 1

Question 2What are the three types of muscular tissues? Write the differences between them.

Accepted Answer

The three types of muscular tissues are:Voluntary musclesInvoluntary musclesCardiac musclesThe differences between them based on the characteristic features are given below:CharacteristicVoluntary MusclesInvoluntary MusclesCardiac MusclesShapeCylindrical and unbranchedSpindle-shapedCylindrical and branchedBands(Striations)Dark and light bands (striation) are presentStriations are absentDark and light bands are presentNucleusMultinucleateUninucleateUninucleateControlThese are under your control or willThese are not under your control or willThese are not under your control.FunctionHelp in the movement of the bones.Help in the movement of food, movement of urine from the urinary bladder etc.Cause the rhythmic movement of the heart resulting in circulation of blood in the bodyLocationPresent in hands, legs, tongue, jaws, body (trunk) and so onPresent in the walls of the stomach, intestines, urinary bladder and arteriesPresent only in heart.

Question 2

Question 6What are the different types of nerves?

Accepted Answer

The different types of nerves are:Sensory nerves — These carry impulses from the sense organs to either the spinal cord or the brain. For example, the optic nerve in the eye and the auditory nerve in the ear.Motor nerves — The nerves that carry messages in the form of responses from the brain or spinal cord to other parts of the body such as muscles and glands are called motor nerves. They contain only motor fibres.Mixed nerves — These perform the function of both sensory nerves and motor nerves. They transmit electrical impulses from the central nervous system to the muscles of the body. They contain both sensory and motor fibres.

Question 3

Question 7Explain the function of the spinal cord.

Accepted Answer

The spinal cord conducts reflexes below the neck. It conducts sensory impulses from the skin and muscles to the brain. It conducts motor responses from the brain to the muscles of the trunk and limbs.

Question 4

Question 8How do messages from various parts of the body reach the brain?

Accepted Answer

The peripheral nervous system transmits messages to and from the sense organs and is responsible for voluntary actions such as cycling, swimming and so on. Messages enter the spinal cord from all parts of the body and reach the brain, which sends back the messages to various body parts through the spinal cord.

Question 5

Question 1meristematic tissue and permanent tissue.

Accepted Answer

Sl.No.Meristematic TissuePermanent Tissue1.They are actively dividing cells.They specialize and do not divide further.2.They are present at root and shoot tip.They are found in different parts of plant.3.They build up plant body in length and thickness.They perform specific function.4.The cells are small in size, cell wall is thin, nuclei are prominent.The cells are fully matured and are bigger in size with thick cell wall.5.Vacuoles are absent.Vacuoles are present.

Question 6

Question 3voluntary and involuntary muscles

Accepted Answer

Sl.No.Voluntary MuscleInvoluntary Muscle1.These muscles are under our control.These muscles are not under our control.2.They help in the movement of the bones of limbs.They are present in internal organs and help in movement of food, movement of urine from urinary bladder and so on.3.The cells are long, cylindrical and unbranched.The cells are spindle shaped.4.They are multinucleate.They are uninucleate.5.They are striated.The are unstriated.

Question 7

Question 4voluntary and involuntary muscles

Accepted Answer

Sl.No.Voluntary MuscleInvoluntary Muscle1.These muscles are under our control.These muscles are not under our control.2.They help in the movement of the bones of limbs.They are present in internal organs and help in movement of food, movement of urine from urinary bladder and so on.3.The cells are long, cylindrical and unbranched.The cells are spindle shaped.4.They are multinucleate.They are uninucleate.5.They are striated.The are unstriated.

Question 8

Question 5seasonal allergy and perennial allergy

Accepted Answer

Sl.No.Seasonal AllergyPerennial Allergy1.When the allergy occurs at a particular time of the year, it is called seasonal allergy.It is not linked to any season.2.Particular allergens prominently found in a season cause such allergy.It occurs at anytime of the year.3.For example: Hay FeverFor example: Dust Allergy

Test Paper

Answer the following in detail

Differentiate between