09 The rate of photosynthesis is not affected by 1. light intensity 2. humidity 3. temperature 4. carbon dioxide concentration

11 The digestive juice without enzyme is 1. bile 2. gastric juice 3. pancreatic juice 4. saliva

13 Which part of the plant takes in carbondioxide from the air for photosynthesis 1. root hair 2. stomata 3. leaf veins 4. sepals