Question:
What is the utility of tissues in multi-cellular organisms?
Answer:
In multicellular organisms, there are millions of cells. Each specialised function is taken up by a different group of cells called tissue. Or Group of cells, forming a tissue are capable of doing a particular function efficiently. Thus Different tissues carry out different types of functions. E.g. In human beings, muscle cells contract and relax to cause movement, nerve cells carry messages, blood flows to transport oxygen, food, hormones and waste material and so on. In plants, vascular tissues conduct food and water from one part of the plant to other parts. So, multicellular organisms show the division of labour.
Tissues
Q 1.
Name the cellular elements of Phloem tissue.
Q 2.
Which Phloem cellular element has a tubular structure with perforated walls?
Q 3.
Which plant tissue is considered to have played an important role in the survival of terrestrial plants?
Q 4.
Why are striated muscles called skeletal muscles?
Q 5.
Name the following:
Tissues present in lung alveoli
Q 6.
Which muscle tissues show characteristics of both striated and unstriated muscles?
Q 7.
Which tissues are responsible for the axial growth of plants?
Q 8.
Name the following:
It provides buoyancy to lotus plant help it float.
Q 9.
Name the following:
Type of Connective Tissue having matrix made of calcium phosphate
Q 10.
What is the utility of tissues in multi-cellular organisms?
Q 11.
Name the chemical released by cork cells?
Q 12.
Why vascular tissue is considered a distinctive feature responsible for the survival of plants in terrestrial plants?
Q 13.
Where do we find epithelial tissues on animal body?
Q 14.
What is the common characteristic in different connective tissues?
Q 15.
How are muscles tissues related to nerve cells?
Q 16.
Which plant tissues are often called as stone cells?
Q 17.
What is the role of xylem tissue?
Q 18.
Based on functions performed, list the types of animal tissues.
Q 19.
Where do we find cardiac tissues? What are the functions of cardiac tissues?
Q 20.
Fill In the Blanks :
Protective tissues include ______ and _____.
Q 21.
Name the following:
Tissues also called erthyrocytes and transport oxygen.
Q 22.
List functions of phloem tissue?
Q 23.
Name the fat-storing tissues? Where are they located? How do these tissue help?
Q 24.
What is the unit of nervous tissues?
Q 25.
Name the following:
Tissue that stores fats in our body.
Q 26.
What are the identifying features of collenchyma tissue?
Q 27.
Which tissue primarily attributes to easy bending of various parts of plants (like stem, leaves)?
Q 28.
How are complex tissues different from simple tissues?
Q 29.
What is the main function of cuboidal epithelium?
Q 30.
Name different types of connective tissues?
Q 31.
What are the constituents of connective tissues?
Q 32.
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 33.
What are constituents of blood tissue?
Q 34.
Which connective tissue connects two bones?
Q 35.
Where do we find Areolar tissue? What are its functions?
Q 36.
How will you identify cardiac muscles cells under a microscope?
Q 37.
How long a nerve cell can be?
Q 38.
What is myelin sheath? Where do we find it?
Q 39.
Fill In the Blanks :
Based on ability to divide, plant tissues may be classified as ________ and _____ tissues.
Q 40.
Name the following:
Supportive plant tissues containing stone cells.
Q 41.
Which tissues are responsible for the secondary growth of plants?
Q 42.
What do you mean by 'Differentiation' in plant tissues?
Q 43.
Why the cell walls of collenchyma tissues are unevenly thickened?
Q 44.
Name two types of complex tissues.
Q 45.
Why are Xylem and Phloem called as vascular tissues?
Q 46.
Why are Xylem and Phloem known as complex permanent tissues?
Q 47.
Based on layer and shape of cells, how Epithelial tissues can be classified?
Q 48.
What is the shape of simple squamous tissue?
Q 49.
Where do we find glandular columnar epithelia? What are their main role?
Q 50.
List the functions of blood cells
