Answer:
The investigator needs to add a negative and a positive control. The positive control can be an auxin previously tested on this plant species, and the negative control should be a NON AUXIN SPRAYED plant, it can be sprayed with disstilled water. It is importan that all these plants are exactly under the same conditions (temperature, light, etc.), but with a distance between them that does not allow crossed contamination.
Explanation:
The phloem transports amino acids and sucrose to the non green part of the plant from the chloroplasts. This is basic but it is correct
The four principles of natural selection are variability among members of a species, heritability of the variable features, differences in population members' ability to reproduce and survival of the fittest in terms of variability, heritability and reproduction. Natural selection is one of evolution's four mechanisms.
Answer:
DNA or protein can be used as a ''molecular clock'' that tells how long it has been since two species have diverged from a common ancestor. The fossil record is usually derived from sedimentary rocks laid down millions of years ago.
<span>If unprotected cells are exposed to salt, or a salt water solution where the concentration of the salt is greater than the concentration in the cellular fluid; the water in the cells will be drawn out, "shrivelling" the cell.
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(Re-post)