Question:
Why do meristematic cells lack vacuoles?
Answer:
The purpose of vacuole is to store food and waste product. Since meristems are young cells and are actively dividing, they do not participate actively in food preparation. Neither they produce large waste and hence lack vacuoles.
Tissues
Q 1.
Name the following:
Supportive plant tissues containing stone cells.
Q 2.
Which meristem replaces epidermis as the protective covering?
Q 3.
What are different types of muscle tissues? Also list which of these are voluntary or involuntary.
Q 4.
What are identification marks of striated muscles when seen under microscope?
Q 5.
Fill In the Blanks :
Xylem is composed of _______, ______, ________ and _______.
Q 6.
Name the following:
Tissue that stores fats in our body.
Q 7.
Which tissue primarily attributes to easy bending of various parts of plants (like stem, leaves)?
Q 8.
What is myelin sheath? Where do we find it?
Q 9.
Name the following:
Tissues present in lung alveoli
Q 10.
List the characteristics of meristematic tissues.
Q 11.
What is the structure and nature of Parenchyma tissue?
Q 12.
Is xylem (or phloem) homogenous tissue or heterogeneous tissue?
Q 13.
What is main purpose of stratified epithelium?
Q 14.
What is the role of xylem tissue?
Q 15.
Which Phloem cellular element has a tubular structure with perforated walls?
Q 16.
List the functions of blood cells
Q 17.
Why are striated muscles called skeletal muscles?
Q 18.
Where do we find cardiac tissues? What are the functions of cardiac tissues?
Q 19.
Where do we find nerve cells?
Q 20.
How are muscles tissues related to nerve cells?
Q 21.
Fill In the Blanks :
____________ is the parenchyma with large number of chloroplasts.
Q 22.
Fill In the Blanks :
Bone is surrounded by a connective tissue known as ________.
Q 23.
Name the following:
Tissue that transports food in plants
Q 24.
Why do plants have more dead tissues as compared to animals?
Q 25.
Which tissues are responsible for the axial growth of plants?
Q 26.
Where do we find intercalary meristem?
Q 27.
Where do you find Parenchyma cells in Plants?
Q 28.
Are Collenchyma tissues present in roots of the plants?
Q 29.
Why are Xylem and Phloem are called vascular or conducting tissues?
Q 30.
Which plant tissue is considered to have played an important role in the survival of terrestrial plants?
Q 31.
Why are Xylem and Phloem known as conducting tissues?
Q 32.
Why are Xylem and Phloem called as vascular tissues?
Q 33.
Based on layer and shape of cells, how Epithelial tissues can be classified?
Q 34.
Where do you find simple squamous in an animal body?
Q 35.
What is the shape of cuboidal epithelium? Where do we find these tissues?
Q 36.
How will you identify Columnar epithelium? Where are these tissues located?
Q 37.
Where do we find glandular columnar epithelia? What are their main role?
Q 38.
List the type of intercellular matrix present in the following connective tissues.
(a) Blood
(b) Lymph
(c) Bone
(d) Cartilage
(e) Tendons
(f) Ligaments
(g) Areolar Tissue
(h) Adipose tissue
Q 39.
What does plasma contain?
Q 40.
Name the two fluid connective tissues.
Q 41.
Why type of inter cellular matrix is found in bone tissue? What are its constituents?
Q 42.
Which connective tissue connects two bones?
Q 43.
How will you identify cardiac muscles cells under a microscope?
Q 44.
Do all cells respond to stimuli or this ability is possessed by nerve cells only?
Q 45.
What is the unit of nervous tissues?
Q 46.
How long a nerve cell can be?
Q 47.
Fill In the Blanks :
The study of the structure of tissues and organs is known as ______ .
Q 48.
Fill In the Blanks :
Based on ability to divide, plant tissues may be classified as ________ and _____ tissues.
Q 49.
Fill In the Blanks :
Meristematic cells possess the power of cell ______.
Q 50.
Name the following:
Tissue that forms the inner lining of our mouth
