Which of the following organisms has cell walls containing silica?
A. Ciliated protozoa
B. Archaea
C. Diatoms
D. Dinoflagellates
C. Diatoms
Biology & Microbiology
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Pollen tubes
A. transport pollen to the stigma. B. facilitate the growth of pollen. C. package sperm into pollen granules. D. allow sperm to fertilize the egg. E. are present during spermatogenesis.
Biology & Microbiology
Lizards and snakes are living members of this lineage
a. Testudines b. Archosauromorpha c. Squamata d. Sphenodontia e. Amphibia
Biology & Microbiology
In what trimester does the baby's skin become smoother as fat is deposited under the skin?
What will be an ideal response?
Biology & Microbiology
Which of the following is a zoonosis caused by a spirochete?
A. bejel B. leptospirosis C. pinta D. syphilis E. yaws
Biology & Microbiology