1 Tissue is a group of similar kind of cells specialised to perform a particular function in the body,therefore presence of tissue in multicellular organism ensures *
Faster development
Division of labour
Higher reproductive potential
Body strength
2. Which of the following is not one a type of cell found in xylem tissue *
Tracheids
Vessels
Sieve tubes
Xylem parenchyma
3. Which of the following function is not served by stomata for the plants *
Exchange of gases
loss of water in the form of vapours during transpiration
help the leaves to carry out the process of photosynthesis
4. Which of the following statements given below is correct about the meristematic tissue *
it is made up of the cells that are incapable of cell division
it is made up of the cells that are capable of cell division
it is composed of single type of cells
It is composed of more than one type of cells
5. If the tip of the sugarcane plant is removed from the field even then it keeps on growing in length it is due to the presence of *
Cambium
Apical Meristem
Intercalary Meristem
Lateral Meristem
6. Which tissue is responsible for the secondary growth of the plant *
Apical Meristem
Intercalary Meristem
Lateral Meristem
7. Which of the following tissues has dead cells *
Parenchyma
Collenchyma
Sclerenchyma
8. Find out incorrect sentence *
Parenchymatous tissue have intercellular spaces
apical and intercalary Meristem are permanent tissues
Collenchymatous tissues are irregularly thickened at corners
meristematic tissue in its early stage lack vacuoles
Answers
Answer:
1. In multi-cellular organisms, the tissue is a group of specialized cells that are designated to perform a particular function at a specific place in the body. For example, muscular tissue and nervous tissue. Since each tissue is performing separate functions, this helps in the division of labor in multi-cellular organisms. This is important to perform all functions with maximum efficiency
2.Xylem is water conducting part. It has tracheids, vessels, xylem parenchyma and xylem fibres.
it doesn't have sieve tubes
3. loss of water in the form of water vapour during transpiration
4. It is made up of cells that are capable of cell division
5. Intercalary meristematic
6. lateral meristematic
7. Sclerenchyma
8. apical and intercalary meristematic tissue are permanent.
Explanation:
Plant tissues may be meristematic or permanent. Meristematic tissues are made up of continuously dividing cells and permanent tissues are made of non-dividing cells. Meristematic cells are present in actively growing locations like apex occupied by apical meristem; intercalary meristems are present at bases of leaves and internodes usually in monocots and lateral meristem is represented by cambium for the growth of stem in girth. One important characteristic of the rapidly dividing cell is a lack of vacuoles.
Permanent tissues may be simple, made up of a single type of cells (parenchyma, collenchyma and sclerenchyma) or complex, made up of cells of more than one type (xylem and phloem). Parenchyma cells are thin walled and have intercellular spaces. Collenchyma cells have thickening of cellulose and pectin at the corners.