Advertisements
Advertisements
प्रश्न
What is the utility of tissues in multi-cellular organisms?
Advertisements
उत्तर
In unicellular organisms, a single cell performs all the basic functions, such as respiration, movement, excretion, digestion, etc. But in multicellular organisms, cells are grouped to form tissues. These tissues are specialised to carry out a particular function at a definite place in the body.
- For example, muscle cells form muscular tissues, which help with movement, and nerve cells form nervous tissue, which helps transmit messages.
- This is known as the division of labour in multicellular organisms. Because of this division of labour, multicellular organisms can perform all functions efficiently.
संबंधित प्रश्न
Define the following term:
Tissue
Fill in the blank by selecting suitable words from the list given below:
A group of different ............... working together to perform a function is called an organ.
What is the importance of tissues?
In Which Tissue is Found Anyone of the Following Structures : Neuron, Dendrite, Cilia, Collagen Fibres, Elastin Fibre.
What is the difference between organ and organism?
Define the following:
Vascular tissue
Match the words of column A with the appropriate words of column B:
| Column A | Column B |
| (a) Adipose tissue | (i) Cyton |
| (b) Neuron | (ii) Unstriated muscles |
| (c) The dark and light band | (iii) Columnar epithelium |
| (d) Dermis of skin | (iv) Striated muscles |
| (e) Sieve pits | (v) Fat cells |
| (f) Br ick like | (vi) Phloem |
Write one word for the following:
An organism whose body is made up of a single cell.
Match the following.
| Sclereids | Chlorenchyma |
| Chloroplast | Sclerenchyma |
| Simple tissue | Collenchyma |
| Companion cell | Xylem |
| Trachieds | Phloem |
Which of the following tissues has dead cells?
