Hydrotropism Stimulus = Response =

A sunlight, roots grow downwards
B water, roots grow towards source of water
C plant leaves move away from touch, plant stem grows towards light
D Plant stem grows upward, plant roots grow downward

Which of the following are false concerning microbes? a. microbes generate oxygen through photosynthesis.b. the primary role of microbes on the planet involves causing disease in animals and humans.c. microbes produce vitamins in the intestines.d. microbes play a role in breaking down waste and decomposing dead organisms.

Many organs are involved in the processes of keeping the blood and the body clean. when poisonous or harmful substances are in the blood, they are absorbed by the and released in a less harmful form. when wastes are present in the blood, they are filtered out and removed from the body by the

Describe the response the kidneys have to dehydration and excessive water intake. what happens to the concentration of urine in each case ?