Some of the intestinal symptoms elicited by pathogens such as salmonella, shigella, and escherichia are due to the presence of

Would really appreciate it, i have an idea but not completely sure

Aresearcher 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.

Apaleontologist finds a plant fossil that shows that the plant had seeds. what can the paleontologist conclude?