__________ do not have tissues and organs
A. soft bodied animals
b. sponges
c. stinging- cell animals
is a free-living worm parasitic??
and do tapeworms use food another animal eats???
B
No
A tapeworm eats by absorbing predigested food and nutrients from the intestinal contents of its host through its outer covering or tegument
To answer the first question, "which organisms do not have tissues and organs," you can approach it by remembering basic characteristics of different animal groups.
a. Soft-bodied animals: Soft-bodied animals, such as jellyfish and worms, typically have tissues and organs. They have specialized cells grouped into different types of tissues, which then form organs.
b. Sponges: Sponges are simple animals that do not have tissues or organs. Instead, they have specialized cells called choanocytes that perform different functions, but they do not form tissues or organs like in other animals.
c. Stinging-cell animals: Stinging-cell animals, such as jellyfish and sea anemones, have tissues and organs. They have specialized cells called cnidocytes that contain stinging organelles called nematocysts. These cells and organelles allow them to capture prey and defend themselves.
Regarding the second question, "is a free-living worm parasitic," the answer depends on the specific worm species in question.
A free-living worm is generally not a parasite. Free-living worms, like earthworms or marine worms, are not dependent on a host organism for their survival. They can obtain their own food and live independently in their natural habitat.
However, there are certain worm species that are parasitic. These worms live inside or on a host organism and obtain nutrients from the host. Examples of parasitic worms include tapeworms, hookworms, and pinworms.
Lastly, in response to the third question, "do tapeworms use food another animal eats," the answer is yes. Tapeworms are parasites that live in the intestines of animals, including humans. They absorb nutrients directly from the host's digestive system. Tapeworms do not have a digestive system of their own but instead absorb nutrients from the partially digested food that the host animal has already consumed.
Therefore, tapeworms rely on the food that another animal eats to survive and obtain their nutrients.