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 following:
Supportive plant tissues containing stone cells.
Q 2.
What are different types of muscle tissues? Also list which of these are voluntary or involuntary.
Q 3.
What are identification marks of striated muscles when seen under microscope?
Q 4.
Which tissue primarily attributes to easy bending of various parts of plants (like stem, leaves)?
Q 5.
Name the following:
Tissues present in lung alveoli
Q 6.
What is the role of xylem tissue?
Q 7.
Why are Xylem and Phloem called as vascular tissues?
Q 8.
Where do we find nerve cells?
Q 9.
Fill In the Blanks :
____________ is the parenchyma with large number of chloroplasts.
Q 10.
Why are Xylem and Phloem known as conducting tissues?
Q 11.
Based on functions performed, list the types of animal tissues.
Q 12.
Which tissues are called covering or protective tissues?
Q 13.
What is main purpose of stratified epithelium?
Q 14.
What is the main function of cuboidal epithelium?
Q 15.
Name different types of connective tissues?
Q 16.
How will you identify cardiac muscles cells under a microscope?
Q 17.
Fill In the Blanks :
The study of the structure of tissues and organs is known as ______ .
Q 18.
Name the following:
Tissue that connects muscles to bone in humans
Q 19.
Where do you find Parenchyma cells in Plants?
Q 20.
What are the identifying features of collenchyma tissue?
Q 21.
Where do you find collenchyma tissues in plants?
Q 22.
Which plant tissues are often called as stone cells?
Q 23.
Which tissue is known as living mechanical tissue?
Q 24.
Are Collenchyma tissues present in roots of the plants?
Q 25.
Why are Xylem and Phloem known as complex permanent tissues?
Q 26.
Why type of inter cellular matrix is found in bone tissue? What are its constituents?
Q 27.
Which connective tissue connects two bones?
Q 28.
What is the unit of nervous tissues?
Q 29.
How long a nerve cell can be?
Q 30.
Fill In the Blanks :
Meristematic cells possess the power of cell ______.
Q 31.
Name the following:
Connective Tissue with a fluid matrix
Q 32.
Name the following:
Epithelial tissues having pillar like cells
Q 33.
Name the following:
Tissues also called erthyrocytes and transport oxygen.
Q 34.
What is the utility of tissues in multi-cellular organisms?
Q 35.
Give three features of cardiac muscles.
Q 36.
Which tissues are responsible for the secondary growth of plants?
Q 37.
What do you mean by 'Differentiation' in plant tissues?
Q 38.
What is aerenchyma?
Q 39.
How does epidermis help xerophytes?
Q 40.
Name two types of complex tissues.
Q 41.
Which Phloem cellular element has a tubular structure with perforated walls?
Q 42.
Why do meristematic cells lack vacuoles?
Q 43.
Based on layer and shape of cells, how Epithelial tissues can be classified?
Q 44.
How will you identify Columnar epithelium? Where are these tissues located?
Q 45.
What are the constituents of connective tissues?
Q 46.
What are constituents of blood tissue?
Q 47.
Name different types of white blood corpuscles.
Q 48.
Which connective tissue connects bones to muscles?
Q 49.
Name the constituents of matrix found in cartilage.
Q 50.
Name the fat-storing tissues? Where are they located? How do these tissue help?
