Explain how thigmotropism can be a negative tropism? A: When plants are touched they grow larger.
B: When plants are touched, the cells die.
C: When touched, plant cells begin to shrink.
D: When plants are touched they move away from the stimulus.

Nucleic acid certain protein cell membranes certain carbohydrates

Plz ! for many generations farmers in north america have been choosing to cross corn plants with large ears of corn each year this results in the new generation of plants also growing large ears of corn. what is the technique called? a. selective breeding. b. natural selection. c. mitosis. d. asexual budding.

The embryos of a bird, a reptile, and a mammal are similar in appearance. how does comparing the physical appearance of embryos of different species support the theory of evolution? a. it shows that these organisms share a common ancestor. b. it provides evidence that these organisms eat the same foods.c. it shows that these organisms share the same habitat.d. it provides evidence that these organisms suffered a genetic mutation.