Question:
What happens in polio disease?
Answer:
During early stages of childhood, when Polio virus attacks it kills motor neurons. Also nerve cells lose their ability to reproduce new nerve cells. This damage is permanent and the affected kid is unable to walk properly in his life.
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.
Name the following:
Plant tissue help in bending leaf stalk
Q 13.
Where do we find intercalary meristem?
Q 14.
What happens in polio disease?
Q 15.
Give three features of cardiac muscles.
Q 16.
Which tissue primarily attributes to easy bending of various parts of plants (like stem, leaves)?
Q 17.
Name the three distinct parts of a neuron.
Q 18.
What is myelin sheath? Where do we find it?
Q 19.
Fill In the Blanks :
Meristematic cells possess the power of cell ______.
Q 20.
Fill In the Blanks :
Bone is surrounded by a connective tissue known as ________.
Q 21.
Name the following:
Tissue that transports food in plants
Q 22.
Name the following:
Tissue that connects muscles to bone in humans
Q 23.
Name the following:
Isodiametric cells, thin cell wall, large vacuoles, living, packing tissue in plants
Q 25.
What does a neuron look like?
Q 26.
Which tissues are responsible for the secondary growth of plants?
Q 27.
Name two types of complex tissues.
Q 28.
Why are Xylem and Phloem known as conducting tissues?
Q 29.
What is the shape of simple squamous tissue?
Q 30.
What is the common characteristic in different connective tissues?
Q 31.
What is the unit of nervous tissues?
Q 32.
How long a nerve cell can be?
Q 33.
How are muscles tissues related to nerve cells?
Q 34.
Fill In the Blanks :
Protective tissues include ______ and _____.
Q 35.
Name the following:
Epithelial tissues having pillar like cells
Q 36.
Name the following:
Animal tissue having rhythmic contraction and relaxation throughout life.
Q 37.
Why do plants have more dead tissues as compared to animals?
Q 38.
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 39.
What are the constituents of phloem?
Q 40.
List the characteristics of meristematic tissues.
Q 41.
Where do you find collenchyma tissues in plants?
Q 42.
Which plant tissues are often called as stone cells?
Q 43.
Which tissue is known as living mechanical tissue?
Q 44.
Why the cell walls of collenchyma tissues are unevenly thickened?
Q 45.
Are Collenchyma tissues present in roots of the plants?
Q 46.
Which plant tissue is considered to have played an important role in the survival of terrestrial plants?
Q 47.
List the cellular elements of xylem tissue?
Q 48.
What is the role of xylem tissue?
Q 49.
Which Phloem cellular element has a tubular structure with perforated walls?
Q 50.
Why do meristematic cells lack vacuoles?
