Final answer:
The matching pairs are: 1-squid to a mollusk without a hard shell, 2-parasites to organisms living off the hosts, 3-testes to male reproductive organs, 4-insect to creatures like houseflies and crickets, and 5-cell to the basic unit of life.
Step-by-step explanation:
The correct matching for the given terms and their meanings is as follows:
- Squid: b. a mollusk without a hard, outer shell
- Parasites: a. Animals that live on or in other animals and get their food from the hosts
- Testes: c. the part of the male animal that produces sperm
- Insect: e. includes the housefly and crickets
- Cell: d. the unit of life for all living things
Squids are part of the Mollusca phylum, which includes diverse creatures, most notably those without a hard shell like certain species of squids. Parasites, such as tapeworms and hookworms, are organisms that rely on the hosts for their survival and sustenance, often without being immediately lethal.
The testes are the reproductive organs in male animals that are responsible for producing sperm. Insects, which encompass organisms such as the housefly and crickets, are a part of the largest group of invertebrates on Earth. Lastly, the cell is the basic unit of life present in all living organisms, carrying out essential functions necessary for survival.