Four of the following are features found exclusively among all vertebrates. Which one is the exception?

a. notochord
b. pharyngeal gill slits
c. four legs
d. post-anal tail
e. dorsal nerve cord


c. four legs

Biology & Microbiology

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A blue, white, or yellow flower with pigments that reflect UV light is typically pollinated by ________

a. flies b. wind c. bees d. bats

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Phagocytic white blood cells digest many of the invasive bacteria that enter the human body. How could a bacterial cell enter a white blood cell in order to be digested?

A) facilitated diffusion B) active transport C) exocytosis D) endocytosis

Biology & Microbiology

Choose the letter of the best match from the following:A. Third trimester of pregnancyB. Second month of pregnancyC. First month of pregnancyD. Second trimester of pregnancyE. Third month of pregnancyThe embryo is now called the fetus.

What will be an ideal response?

Biology & Microbiology

Which animals serve as intermediate hosts for human schistosomes?

A. Humans B. Reduviid bugs C. Fish D. Snails E. Mosquitoes

Biology & Microbiology