Afriend asks you why sea anemones are not placed in the phylum echinodermata. she says," sea anemones have radial symmetry, so they must be sea stars." "of course you are correct about the radial symmetry in both groups of organisms," you reply. select the best choice for the rest of your response. "however,

a. sea anemones are members of the phylum cnidaria and anyway, they are protostomes, not deuterostomes."
b. echinoderms are only radially symmetrical in their larval forms."
c. sea anemones are diploblastic while sea stars are triploblastic."
d. sea anemones and sea stars are both marines."
e. sea stars are mobile whereas sea anemones are mostly sessile.

All but one describes an effect of aging on the digestive system. a) decreased acid secretion b) decreased elasticity of stomach c) capacity to resist damage decreases d) food remains in stomach for less time

What is true of all organisms in the kingdoms protista, plantae, fungi, and animalia? a. they are multi-celled. b. they are photosynthetic. c. they have cells that contain membrane-bound organelles. d. they contain cells that lack membrane-bound organelles.

Recently, crops of vegetables such as lettuce and green onions have been contaminated, while they are still on the farm, with bacteria that cause food poisoning. how will science influence the way the government responds to prevent an increase in food-borne diseases? because science has shown that lettuce and green onions are not nutritionally valuable, the government may pass laws that ban the sale of lettuce and green onions. because science has shown that there is no way to prevent bacterial contamination, the government may pass laws that punish businesses that buy lettuce and green onions. because science has shown that the washing of hands prevent the spread of infectious diseases among people, the government may pass laws that require hand washing by everyone who handles food. because science has shown there are ways to find the source of the contamination, the government may pass laws that require farm practices that reduce the contamination of lettuce and green onions.