Question:
What is myelin sheath? Where do we find it?
Answer:
Axons of nerve cell is covered by a sheath called myelin sheath. Myelin sheath prevents the leakage of nerve impulse ( a sort of electrical signal) from the axon.
Tissues
Q 1.
What is main purpose of stratified epithelium?
Q 2.
Name the following:
Tissue that stores fats in our body.
Q 3.
Name the following:
Supportive plant tissues containing stone cells.
Q 4.
Name the following:
It provides buoyancy to lotus plant help it float.
Q 5.
Fill In the Blanks :
Xylem is composed of _______, ______, ________ and _______.
Q 6.
What are identification marks of striated muscles when seen under microscope?
Q 7.
Name the following:
Tissues present in lung alveoli
Q 9.
Which tissues are responsible for the axial growth of plants?
Q 10.
Which tissue makes up the husk of coconut?
Q 11.
Which meristem replaces epidermis as the protective covering?
Q 12.
What happens in polio disease?
Q 13.
Name the following:
Plant tissue help in bending leaf stalk
Q 14.
Give three features of cardiac muscles.
Q 15.
Where do we find intercalary meristem?
Q 16.
Which tissue primarily attributes to easy bending of various parts of plants (like stem, leaves)?
Q 17.
Fill In the Blanks :
Bone is surrounded by a connective tissue known as ________.
Q 18.
Name the following:
Tissue that transports food in plants
Q 19.
Why are Xylem and Phloem known as conducting tissues?
Q 20.
What is the shape of simple squamous tissue?
Q 21.
Name the three distinct parts of a neuron.
Q 22.
What is myelin sheath? Where do we find it?
Q 23.
Fill In the Blanks :
Meristematic cells possess the power of cell ______.
Q 24.
Name the following:
Epithelial tissues having pillar like cells
Q 25.
Name the following:
Tissue that connects muscles to bone in humans
Q 26.
Name the following:
Isodiametric cells, thin cell wall, large vacuoles, living, packing tissue in plants
Q 28.
What does a neuron look like?
Q 29.
Which tissues are responsible for the secondary growth of plants?
Q 30.
Name two types of complex tissues.
Q 31.
Where do we find glandular columnar epithelia? What are their main role?
Q 32.
What is the common characteristic in different connective tissues?
Q 33.
Name the constituents of matrix found in cartilage.
Q 34.
How will you identify cardiac muscles cells under a microscope?
Q 35.
Do all cells respond to stimuli or this ability is possessed by nerve cells only?
Q 36.
What is the unit of nervous tissues?
Q 37.
How long a nerve cell can be?
Q 38.
How are muscles tissues related to nerve cells?
Q 39.
Fill In the Blanks :
____________ is the parenchyma with large number of chloroplasts.
Q 40.
Fill In the Blanks :
Protective tissues include ______ and _____.
Q 41.
Name the following:
Connective Tissue with a fluid matrix
Q 42.
Name the following:
Animal tissue having rhythmic contraction and relaxation throughout life.
Q 43.
What is the utility of tissues in multi-cellular organisms?
Q 44.
Why do plants have more dead tissues as compared to animals?
Q 45.
Identify which of the following plant tissues are living or dead?
Apical Meristem, Parenchyma, Aerenchyma, Collenchyma, Sclereids, Tracheids, Xylem Fibres, Xylem Parenchyma, Phloem fibre, Phloem Parenchyma, Vessel, Sieve Tubes
Q 46.
What are the constituents of phloem?
Q 47.
List the characteristics of meristematic tissues.
Q 48.
Where do you find collenchyma tissues in plants?
Q 49.
Which plant tissues are often called as stone cells?
Q 50.
Which tissue is known as living mechanical tissue?
