Which of these animals does NOT belong in class Arachnida?

a. spider
b. crayfish
c. tick
d. mite
e. scorpion


Ans: b. crayfish

Biology & Microbiology

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Most conifers are __________, meaning that they retain their leaves throughout the year

A. deciduous B. evergreen C. ephemeral D. dioecious E. monecious

Biology & Microbiology

Similar genes in two species suggest that the genes have been inherited from a _____________.

Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology

Adaptive radiation is NOT accompanied by:

a. migration to an island. b. a mass extinction. c. a devastating event, such as a volcanic eruption. d. climatic change. e. sympatric speciation

Biology & Microbiology

Which of the following cell contain a nucleus?

a. bacteria b. prokaryotes c. eukaryotes

Biology & Microbiology