A researcher has developed two stains for use with seed plants. One stains sporophyte tissue blue; the other stains gametophyte tissue red. If the researcher exposes pollen grains to both stains, and then rinses away the excess stain, what should occur?
A) The pollen grains will be pure red.
B) The pollen grains will be pure blue.
C) The pollen grains will have red interiors and blue exteriors.
D) The pollen grains will have blue interiors and red exteriors.
E) Insofar as the pollen grains are independent of the plant that produced them, they will not absorb either stain.
Some of the bacteria that can fix atmospheric nitrogen, converting it into a form usable by plants.
Plants
Plants
Plants
Experiments showing that long- or short-day plants flower in response to night length. Each horizont
Breeding garden pea plants (Pisum sativum), which can self-fertilize or cross-fertilize.