The correct answer is: Letter A: a woman walks in a straight line.
Letter B: the equator
Letter C: a man walks in a straight line...
Letter D: a line of longitude

Name the plastid and pigment likely to be found in the cells of (a) petals of sunflower (b) ripe tomato.

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.

How do accessory pigments chlorophyll?