2. Differentiate the following
- Meristematic tissue and Ground tissue
- Apical meristem and lateral meristem
- Parenchyma and collenchyma
- Sclerenchyma and parenchyma
- Xylem and phloem
Epidermis and bark
Answers
Answer:
Explanation:
1 Meristematic is the group of cells that has the ability to easily divide and the Ground Tissue are tissue of plant other in epidermis and vascular tissue consisting collenchyma parenchyma. ... Ground tissue of plants includes the tissues neither vascular nor dermal. Ground tissues are divided into 3 types of cell walls.
2 Meristematic tissue can be divided into apical meristems and lateral meristems: Apical meristems occur at shoot and root tips and are responsible for primary growth (i.e. plant lengthening) Lateral meristems occur at the cambium and are responsible for secondary growth (i.e. plant widening / thickening)
3 parenchyma Cells Collenchyma Cells
Isodiametric generally, may vary in shape Elongated cells
Cell wall
Present and thin-walled Made of cellulose Present, uneven cell wall Made of pectin and hemicellulose
Intercellular spaces
4 Parenchyma cells help in storage of foods, in gaseous exchange, and in photosynthesis. Collenchyma cells provide mechanical support and elasticity to the plant. Sclerenchyma cells provide mechanical support to the plant. It also supports transportation of water and nutrients to the plants.
5 Xylem transports and stores water and water-soluble nutrients in vascular plants. Phloem is responsible for transporting sugars, proteins, and other organic molecules in plants. Vascular plants are able to grow higher than other plants due to the rigidity of xylem cells, which support the plant.
6 epidermis- It is the outer protective layer in young plants Bark- It is the secondary meristem which is several layer thick . ... Epidermis : It is the outer most layer of cell which covers the whole plant . Bark : dermal tissue forms several layers above the epidermis it is called bark.
Answer:
•••Xylem and phloem:
Xylem transports only minerals and waters from the roots. Phloem transports food materials that are prepared by the green parts of the plants to other parts of the plant. Xylem is the dead tissues at maturity, but no cell contents. Phloem is the living tissue, but not with the nucleus.
•••Epidermis and Bark:
Bark is the outer covering of the plant made of sclerenchyma.
Epidermis is the inner layer of the bark
•••Parenchyma and sclerenchyma:
Parenchyma cells are found in every soft part of the plant, but collenchyma cells are found in specific part of the plant like leaves, stems, and petioles, whereas sclerenchyma cells are found in mature parts of the plants or trees. Parenchyma has a thin cell wall of their cells, and are made up of cellulose
•••Parenchyma and collenchyma:
Parenchyma has a thin cell wall of their cells, and are made up of cellulose. Whereas collenchyma cells have an uneven cell wall made up of pectin and hemicellulose. There is a hard and thick cell wall present of the sclerenchyma cells, which is made up of the lignin.
•••Apical meristem and lateral meristem:
Primary or apical meristem is the tissue from which the main stem of a plant arises while lateral meristem is the one from which the plant grows laterally. ... Apical meristems are responsible for the primary growth of the stems and roots of the plants and hence they will help increase length and height of the plant.
Meristematic tissue and Ground tissue:
Meristematic tissue and ground tissue are two types of tissues found in plants. ... The cells in the ground tissue are incapable of dividing. The main difference between meristematic tissue and ground tissue is their location, function, and the ability to divide.
Explanation: