Answer:
The correct answer is giant clam.
Explanation:
Clams are not arthropods, they're actually mollusks, specifically bivalves. All of the other options classify as arthropods, even the crabs, that also are arthropods. Also, the spiders are arthropods, although they're not hexapods. Therefore, clams are the only individuals that don't belong to the arthropods.
We couldn't be where we are without microscopes and other technology. We couldn't study almost anything we know without these modern inventions.
Answer: Telomerase is the enzyme responsible for maintenance of the length of telomeres by addition of guanine-rich repetitive sequences. Telomerase activity is exhibited in gametes and stem and tumor cells.
Explanation: