The phylum name Arthropoda refers to:
A. a hard exoskeleton.
B. the ability to fly.
C. jointed appendages.
D. respiratory capabilities.
E. a segmented coelom.
C
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One of the two strains of Streptococcus pneumoniae isolated in the 1920s was surrounded by a ____________________, giving it the ability to evade the immune system and cause pneumonia
Fill in the blank(s) with correct word
Endodermis cells of the root secrete a waxy
substance on
a. all of their walls. b. the walls that lead into the xylem. c. the walls adjacent to the phloem only. d. walls of the endodermis that touch each other. e. their chloroplasts
Which of the following is one of the four main
types of tissues?
a. bone b. muscle c. cartilage d. blood e. more than one of these
Which of the following is the lineage of green algae believed to most resemble early plant ancestors?
A) charophytes B) ulva C) volvox D) dinoflagellates