Home › ICSE Class 9 › biology › Tissues: Plant and Animal Tissues › Which tissue has cells that are dead at maturity?
Which tissue has cells that are dead at maturity?
APhloem sieve tubes carrying sugar solution
BTracheids in xylem of vascular plants
CCardiac muscle fibres beating in the heart
DEpithelial lining of the small intestine
Answer & Solution
Correct answer: B. Tracheids in xylem of vascular plants
1. The chapter notes xylem tracheids and vessels are dead at maturity.
2. This leaves empty conduits ideal for water flow.
3. Phloem, muscle and epithelium retain living cytoplasm.
4. So the dead-at-maturity option is xylem tracheids.
_Source: Selina Concise Biology Class 9, Ch 3 Tissues, Plant and Animal Tissues (Mistral OCR'd PDF), section on xylem_
Related questions
Which feature is common to all connective tissues?Cartilage is connective tissue whose matrix isGoblet cells in the intestinal epithelium secreteWhich of the following is a permanent plant tissue?Which tissue absorbs water and minerals at root tips?Tendon, a tough connective tissue, joinsAdipose tissue under the skin mainlyCollenchyma cells differ from parenchyma because their walls are