Chapters 27 & 28

Plant Growth and Growth Patterns

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1. Growth is the increase in the mass of an organism.

2. In plants growth is restricted to regions called .

3. plant growth occurs at meristems (root and shoot tips) where newly formed cells become elongated, vacuolated and .

4. growth occurs in a perennial plant at a meristem called .

5. Cambial activity produces annual of secondary xylem and phloem. each ring of secondary contains a region of large vessels called wood and a region of smaller vessels called wood.

6. do not possess meristems. Instead growth occurs all over a developing animal’s .

7. plants (angiosperms) have extensive powers of whereas mammals have only powers.

8. Investigations into growth often involve measuring a variable factor such as fresh weight, , length etc.

9. A graph of the results normally takes the form of a (S-shaped) growth curve.

10. Growth vary from one type of organism to another.