When a plant grows toward or away from a stimulus, it’s called a tropism.
a. 3 Types:
i. Phototropism- a response to that directs the stem to grow toward the light and roots to grow away from it
ii. Gravitropism- Stems and leaves grow away from the force of while roots grow toward it.
iii. Thigmotropism- growth in response to . The side of the stem in contact with the object grows slower than the side not in contact. This causes the vine to twist around the object.

Note: Fill in all the blanks.

Explanation:

Phototropism- a response to light stimulus that directs the stem to grow toward the light and roots to grow away from it.

ii.Gravitropism- Stems and leaves grow away from the force of gravity while roots grow toward it.

iii.Thigmotropism- growth in response to touch stimulus. The side of the stem in contact with the object grows slower than the side not in contact. This causes the vine to twist around the object.

"1. it should be, it has been for about 20 years, and it's really not much different in the end than breeding animals to have particular traits. there are always concerns about genetically engineered animals/plants affecting the environment in unexpected negative ways, but i can't think of an example where the fears didn't turn out to be baseless.  

first, as you point out, it would be a great advance in pharmacology, to be able to tailor drugs and their doses to me. the pros involve better medical treatment. the cons involve privacy issues like insurance companies denying coverage to people with genetic risk factors. looking at dna markers wouldn't affect the frequency of genetic diseases, but it would allow detection of them earlier. and ok, actually i suppose that if people used this information to avoid having children with genetic diseases, some might decrease in frequency."

trachea, alveoli, lung capillaries, arteries