Question

the mouth/anus in a jellyfish is the entrance to its \stomach\, called the
nematocyst
gastrovascular cavity
spongocoel
filtration system

which of the following organisms are most closely related?
organisms that share a phylum
organisms that share a genus
organisms that share a family
organisms that share an order

sponges are ______ which means they stay in one place.
larva
sessile
porifers

Explanation:

1. Jellyfish have a gastrovascular cavity which serves as both the entrance to their "stomach" and for expelling waste. Nematocysts are stinging cells, spongocoel is the central cavity of sponges, and filtration system is not the term for their stomach - like structure.
2. In the biological classification hierarchy, organisms in the same genus are more closely related than those in the same family, order, or phylum. The hierarchy from broad to narrow is kingdom, phylum, class, order, family, genus, species.
3. Sponges are sessile organisms, meaning they are attached to a surface and do not move around. Larva is an immature stage in the life - cycle of some animals, and porifers is the phylum name for sponges but does not describe their non - motile nature.

Answer:

1. B. gastrovascular cavity
2. B. organisms that share a genus
3. B. sessile