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.
Which tissues are called covering or protective tissues?
Q 2.
What are the identifying features of collenchyma tissue?
Q 3.
What is main purpose of stratified epithelium?
Q 4.
Where do you find collenchyma tissues in plants?
Q 5.
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 6.
Which plant tissues are often called as stone cells?
Q 7.
How are complex tissues different from simple tissues?
Q 8.
Why are Xylem and Phloem known as complex permanent tissues?
Q 9.
Where do we find epithelial tissues on animal body?
Q 10.
What is the unit of nervous tissues?
Q 11.
Name the following:
Animal tissue having rhythmic contraction and relaxation throughout life.
Q 12.
How does epidermis help xerophytes?
Q 13.
Name the following:
Type of Connective Tissue having matrix made of calcium phosphate
Q 14.
List the cellular elements of xylem tissue?
Q 15.
What is the common characteristic in different connective tissues?
Q 16.
Fill In the Blanks :
Xylem is composed of _______, ______, ________ and _______.
Q 17.
Name the following:
Supportive plant tissues containing stone cells.
Q 18.
Name the following:
Human tissue that helps in the movement of ova in the fallopian tube.
Q 19.
Where do you find Parenchyma cells in Plants?
Q 20.
List the functions of the epidermis.
Q 21.
Why vascular tissue is considered a distinctive feature responsible for the survival of plants in terrestrial plants?
Q 22.
Which Phloem cellular element has a tubular structure with perforated walls?
Q 23.
Where do you find simple squamous in an animal body?
Q 24.
Where blood is formed in our body?
Q 25.
Why are striated muscles called skeletal muscles?
Q 26.
How long a nerve cell can be?
Q 27.
How are muscles tissues related to nerve cells?
Q 28.
Fill In the Blanks :
The study of the structure of tissues and organs is known as ______ .
Q 29.
Name the following:
Connective Tissue with a fluid matrix
Q 31.
Why the cell walls of collenchyma tissues are unevenly thickened?
Q 32.
Name the chemical released by cork cells?
Q 33.
Name two types of complex tissues.
Q 34.
Which plant tissue is considered to have played an important role in the survival of terrestrial plants?
Q 35.
Why do meristematic cells lack vacuoles?
Q 36.
What is the main function of cuboidal epithelium?
Q 37.
How will you identify Columnar epithelium? Where are these tissues located?
Q 38.
What is Haematology?
Q 39.
Where do we find Areolar tissue? What are its functions?
Q 40.
What is myelin sheath? Where do we find it?
Q 41.
Fill In the Blanks :
Permanent tissues are those which have lost the capacity to _____.
Q 42.
Give three features of cardiac muscles.
Q 43.
List the characteristics of meristematic tissues.
Q 44.
Where do we find intercalary meristem?
Q 45.
Are Collenchyma tissues present in roots of the plants?
Q 46.
Why are Xylem and Phloem are called vascular or conducting tissues?
Q 47.
What is the role of xylem tissue?
Q 48.
What is the shape of simple squamous tissue?
Q 49.
What is simple stratified epithelium? Where do we find these tissues?
Q 50.
Name different types of connective tissues?
