Class 9 > CBSE Class 9 Biology(TISSUES)-Videos & documents by Letstute > Complex Permanent Tissues -Xylem and Phloem - Tissues - Class 9 - Science
Complex Permanent Tissues -Xylem and Phloem - Tissues - Class 9 - Science Video Lecture - CBSE Class 9 Biology(TISSUES)-Videos & documents by Letstute
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FAQs on Complex Permanent Tissues -Xylem and Phloem - Tissues - Class 9 - Science Video Lecture - CBSE Class 9 Biology(TISSUES)-Videos & documents by Letstute
| 1. What are complex permanent tissues in plants? |  |
Ans. Complex permanent tissues in plants refer to the tissues composed of more than one type of cells that work together to perform specific functions. The two main types of complex permanent tissues in plants are xylem and phloem.
| 2. What is the function of xylem tissue in plants? | |
Ans. Xylem tissue is responsible for the conduction of water and minerals from the roots to the other parts of the plant. It also provides mechanical support to the plant.
| 3. What is the function of phloem tissue in plants? | |
Ans. Phloem tissue is responsible for the transport of organic substances, such as sugars and amino acids, from the leaves to the other parts of the plant. It helps in the process of photosynthesis and provides nutrition to different plant parts.
| 4. How is xylem tissue adapted for its function? | |
Ans. Xylem tissue consists of elongated cells called tracheids and vessels, which are dead and devoid of protoplasm. The presence of lignin in their cell walls makes them strong and waterproof, allowing efficient conduction of water and minerals through the plant.
| 5. How is phloem tissue adapted for its function? | |
Ans. Phloem tissue consists of sieve tube elements and companion cells. The sieve tube elements are long, cylindrical cells that form sieve tubes for the transport of organic substances. The companion cells provide metabolic support and maintain the functioning of sieve tube elements. Together, they ensure the efficient transport of organic substances throughout the plant.
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