Sponges are similar to other animals in that they are multicellular, heterotrophic, lack cell walls and produce sperm cells. Unlike other animals, they lack true tissues and organs, and have no body symmetry.
The shapes of their bodies are adapted for maximal efficiency of water
flow through the central cavity, where it deposits nutrients, and leaves
through a hole called the osculum. Many sponges have internal skeletons of spongin and/or spicules of calcium carbonate or silicon dioxide. All sponges are sessile
aquatic animals. Although there are freshwater species, the great
majority are marine (salt water) species, ranging from tidal zones to
depths exceeding 8,800 m (5.5 mi).
Answer:
Hi,
The correct answer option is B; A tapeworm latches itself in the intestines of a rat, feeding off all the nutrients eaten by the rat
Explanation:
In parasitism, one of the organism, the parasite lives in or on the other organism namely the host causing it harm and sometimes death.For example a tick that lives on dogs is a parasite.In this answer choice, the rat is the host whereas the tapeworm is the parasite.
Best of Luck!
Answer:
A dichotomous key is an important scientific tool, used to identify different organisms, based the organism’s observable traits. Dichotomous keys consist of a series of statements with two choices in each step that will lead users to the correct identification.
Explanation:
Your welcome! :)
Answer:
9:enforcement terrorism, 10:true,11:true
