What phyla of animals has the greatest number of species?
A. Arthropoda.
B. Chordata.
C. Mollusca.
D. Annelida.
E. Nematoda.
A. Arthropoda.
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Vascular plants can be divided into ____ groups according to how they complete their life cycle, particularly the dispersal phase
A. 1 B. 2 C. 3 D. 4 E. 5
The largest and strongest males develop a
harem. b. A female bird will mate only with males that perform the best courtship displays. c. Members of a sorority usually marry fraternity brothers. d. Some males mate with any female they encounter. e. Female birds of paradise select the most colorful males as mates.
Bacterial endospores are medically important because
A) they are susceptible to antibiotics. B) they resist ordinary cleaning and sanitizing methods. C) all spore-forming bacteria are pathogenic. D) all of the above.
The first dinosaurs appeared during the ________ period
Fill in the blank(s) with correct word