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Year 9 biology questions

Answer the questions below in word format and send back to our classroom.

  1. Define the term photosynthesis (3)……………………………………………………………………………………………………………………………………………………………………………………………………………….,……………… ……..
  2. State three factors that must be there for photosynthesis to occur (3)
  1. Draw a well labeled diagram to show the structure of a cell naming at least 5 parts. (6)
  2. State the role of the following parts of a cell. (7)
  1. Nucleus
  2. cell wall
  3. Chlorophyll
  4. Cytoplasm
  5. Cell membrane
  6. Vacuole

5. Why is plant glucose converted to starch. give a good description. (3)

6. State the procedure of testing a leaf for starch and in each step give a reason why it is done.

7. What is pollution?

8. State in each, four causes of the following forms of pollution

  1. Soil
  2. Water
  3. Air

9. Water pollution occurs as a result of excessive addition of fertilizer in the water. Describe exhaustively how this happens, using the terms such algal blooms, oxygen, sunlight, poison, marine animals. Etc. (10)

10. What is conservation? (2)

11. State 3 ways in which humans can do to conserve the following

A. Forests

B. Fish storks

12. State 4 reasons why human beings destroy forests. (4)