G.Answer the following questions in detail
1. What are tissues? Write the basic functions and significance of tissues in organisms
2. What are meristematic thues? Categorise them based on their location and function
3. Tabulate the differences between three kinds of sample permanent plant issues
4. Differentiate between simple and complex permanent plant tissues. Give examples
5. Why are complex tissues called conducting tissues? Explain with the examples
Answers
1/ A group of cells which is organised and specialized to perform a particular function in the body of an organism is called tissue.In the body of an organism different life activities such as respiration,digestion,reproduction,excretion,movement,transportation and storage of food materials ,etc. are divided amongst different parts of the body are performed by the tissues.it is necessary for both plants and animals to perform the necessary life process es for their survival.it increases the cell efficiency and ensures greater organisation within the body of an organism.henceorganism can easily survive in the given or changing surrounding conditions.
2/meristematic tissues form a group of continuously dividing cells which help in growth of the plant.As plants continuously grow throughout their life time,meristematic tissues cause an increase in length and girth of a plant.m meristematic tissues are divided into 3 main types based on their location in the plant body:
●apical meristem:it occurs at the shoot apex of growing stems and roots.there it is called shoot apical meristem and root apical meristem respectively.apical meristem is responsible for growth in length of root and stem of the plant.
●intercalary meristem:it occurs at base of leaves ,below the nodes and at the Base of internodes.it is responsible for growth of leaves and internode in plants.
●lateral meristem: it occurs on sides of stems and roots and causes them to increase in girth.
3/the picture on the top
4/simple permanent tissue are similar to each other with respect to their origin , function and perform or shape. there are 3types of simple permanent tissue: parenchyma ,collenchyma,and sclerenchyma.
while
in, complex permanent tissues ,more than one type of cells occur,having the same origin and performing a particular function while working to.there are 2 types of complex permanent tissue xylem and phloem .
5/ I don't know.
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