Arthropods having two pairs of antennae belong to the subphylum:

a. Chelicerata.
b. Insecta.
c. Crustacea.
d. Pycnogonida.
e. Cirrepedia.


C

Biology & Microbiology

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Single-celled or colonial protists that have a two-part silica shell and are often photosynthetic are called ________

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