State one main structural characteristic and the special activity of the following
tissue:
meristem, sclerenchyma, xylem, phloem, epithelium, muscle, nervous tissue.
Answers
Explanation:
meristem-help in growth
sclerenchyma-mechanical support
xylem- transport of water
phloem-transport of food material
epithelium-lining tissue
muscle-movement
nervous tissue-transmission of messages and impulses
• Meristem: It contains undifferentiated cells, small vacuoles.
• The main activity is responsible for the growth of the plant.
• Sclerenchyma: It contains thick and dignified cell walls.
• The main activity of this tissue is it gives support and mechanical strength to the plant.
• Xylem: It contains specialized cells.
• The main activity of xylem tissue is to transport water from root to tip in the plant.
• Phloem: It contains specialized cells called sieve tubes.
• The main function of phloem is the transportation of food to all parts of the plant.
• Epithelial tissues are the cell membranes involved in the absorption, protection and secretion process in the plant.
• Nervous tissue is to receive stimuli and impulses to the brain and spinal cord.
• Muscle cells are used for moving our bodies.
• Muscles are the tissues in the body, it has the ability to give position and posture to the body.