Which of the following belongs to the Trematoda class of flatworms?

a. internal parasites of mollusks
b. nematodes
c. internal parasites of vertebrates
d. tapeworms


a. internal parasites of mollusks

Biology & Microbiology

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The primary source of new red blood cells in mammals is the ____

a. liver b. blood, itself c. spleen d. heart e. bone marrow

Biology & Microbiology

Mycorrhizae

a. increase plant growth. b. are symbionts. c. allow a plant to absorb more water. d. increase the surface area for absorption of water and minerals. e. have all of these characteristics

Biology & Microbiology

An embryo with no SRY gene develops into a

__________. Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology

Information is transferred from the nucleus to ribosomes via ________

A) mRNA B) rough endoplasmic reticulum C) DNA D) smooth endoplasmic reticulum

Biology & Microbiology