Why do ctenophores produce luminescence?
a. To attract males
b. To lure prey.
c. To frighten predators.
d. All of these choices.
d
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Which statement about birds is true?
a. Bird feathers are modified reptilian scales. b. Bird lungs are similar to mammalian lungs. c. A bird’s primary feathers provide lift. d. Most bird species have two ovaries.
Which of the following can impact methylation
patterns? a. drugs. b. exercise. c. stress. d. diet. e. all of these
In vascular plants, sugar solutions and hormones are transported through tubes constructed of cells called
A) tracheids. B) vessels elements. C) plasmodesmata. D) companion cells. E) sieve-tube elements.
The _____ is often seen as the lender of last resort
a) world bank b) international monetary fund c) international development association d) world trade organization