Molluscs share a three-part body plan consisting of
A. eyespots, a digestive system, and a nervous system.
B. a corona, stomach, and intestines.
C. a scolex, proglottids, and an anus.
D. a visceral mass, mantle, and foot.
Answer: D
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The lineage ____ are the fleshy-finned fishes, with fins supported by muscles and an internal bony
skeleton. Based on the fossil record, tetrapods apparently arose from this group.
a. Petromyzontoidea b. Chondrichthyes c. Actinopterygii d. Myxinoidea e. Sarcopterygii
Where do sperm form?
a. The vas deferens b. The epididymus c. The corpus cavernosum d. The seminiferous tubules
The tip of an actively lengthening shoot is called a ____
a. flower stalk b. shoot cap c. lateral meristem d. terminal bud e. lateral bud
In eukaryotes, each type of RNA polymerase recognizes a different
A. start codon B. stop codon C. promoter D. transcription factor E. release factor