Colonial morphology that appears as a "checker" or dipped in the middle with raised edges is termed:
a. flat.
b. convex.
c. umbilicate.
d. variable.
C
Colonies that appear as checkers or elevated on the outside edge and depressed in the middle are considered umbilicate. This morphology is typically associated with S. pneumoniae
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Which of the following statements about honeybee communication is not correct?
A. The hive is like a giant organism, fixed in location but sending out workers in all directions to forage. B. Returning foragers pass samples of collected food to other workers that surround her upon return. C. The workers use olfactory cues to go out and find food once given a sample by returning foragers. D. Returning foragers use the waggle dance to provide information about the direction of the food source in relationship to the sun. E. The waggle dance can be in direct line with the sun or at various angles to the left or right of the direct line of the sun.
Heterospory refers to having
a. male and female gametes. b. two spore types. c. both male and female parts on the same plant. d. separate male and female plants. e. both sporophyte and gametophyte generations.
Which of the following statements about keratin is false?
a. It is a protein molecule. b. It is manufactured by epidermal cells. c. It gives strength to the skin. d. It acts as an evaporative barrier to prevent excess water loss. e. It facilitates diffusion across the body surface.
Figure _________ represents meiosis II for an organism with a diploid number of 4.
A. A
B. B
C. C
D. D