Advertisements
Advertisements
प्रश्न
Advertisements
उत्तर
Xylem is a complex plant tissue composed of several types of cells which are
- Tracheids - These cells are long and tubular with thick, rigid, and lignified walls and pointed ends. Tracheids are present in all vascular plants. These conduct water and minerals from the root to stem.
- Vessels - These are long cylindrical cells with lignified walls, placed one above the other to form a pipe-like structure. They participate in the conduction of water and minerals.
- Xylem fibres - These are sclerenchymatous fibres found attached to the xylem. These provide strength to the plant organs.
- Xylem parenchyma - This is the living component of xylem. Xylem parenchyma is composed of simple parenchyma cells found in the xylem. These are connected with tracheids or vessels through simple or bordered pits. Their function is to store food material.
(a) - (e) Elements of xylem:
(a) Tracheids
(b) Vessels
(c) Fibres
(d) - (e) Parenchyma
APPEARS IN
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?
What is the difference between organ and organ system?
What is phloem?
Differentiate between:
Organ and organelle
Write one word for the following:
A group of tissues forming a new structure.
Match the following.
| Sclereids | Chlorenchyma |
| Chloroplast | Sclerenchyma |
| Simple tissue | Collenchyma |
| Companion cell | Xylem |
| Trachieds | Phloem |
A plant tissue, when stained, showed the presence of hemicellulose and pectin in cell wall of its cells. The tissue represents ______.
______ tissues are most abundant and widely distributed in the body of complex animals.
