15 Draw well labelled diagrams of various types of muscles found in human body
14. Give reasons for
(a) Meristematic cells have a prominent nucleus and dense cytoplasm but they lackvacuole.
(b) Intercellular spaces are absent in sclerenchymatous tissues.
(c) We get a crunchy and granular feeling, when we chew pear fruit.
(d) Branches of a tree move and bend freely in high wind velocity.
(e) It is difficult to pull out the husk of a coconut tree.
15. List the characteristics of cork. How are they formed? Mention their role.
16. Why are xylem and phloem called complex tissues? How are they different from one other?
17. Differentiate between meristematic and permanent tissues in plants
18. Define the process of differentiation
19. Name any two simple and two complex permanent tissues in plants.
20. Animals of colder regions and fishes of cold water havē thicker layer of subcutaneous fat. Describe
why?
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