4. which of the following is the best example of
biodiversity?
a in sri lanka, over 30 species of tree frog are in
danger of becoming extinct.
b atlantic salmon may swim 500 miles against a
river current just to spawn.
c sequoia national park has more than 1200
plant species.
d birds have feathers with different colors.

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.

Name one similarity and one difference between the morphology of a brachiopod and a bivalve

Which best example best demonstrates the importance of having knowledge of evolutionary relationships? a. illustration of a plant b. organ transplantation between species c. blood donation from a human d. do you need sequence of an insect.