All of the following are characteristic of algae EXCEPT which ONE of the following?
A) Most are photoautotrophs.
B) They are currently classified as plants.
C) They may be unicellular or multicellular.
D) Some produce harmful toxins.
E) They mostly live in aquatic habitats.
B
Biology & Microbiology
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Excretory organs known as Malpighian tubules are present in _____
A) earthworms B) flatworms C) insects D) jellyfish E) sea stars
Biology & Microbiology
The concentration of CO2 in the atmosphere is lower than its concentration in the oceans
Indicate whether the statement is true or false
Biology & Microbiology
What is the oldest (in other words, most ancient) primate group?
A. Old World monkeys B. Lemurs C. New World monkeys D. Gibbons
Biology & Microbiology
The Calvin cycle produces ________, not __________.
Fill in the blank(s) with the appropriate word(s).
Biology & Microbiology