Answer:
These structures that protect the sponges from most predators, but not turtles, are spicules.
Explanation:
Sponges <em>skeleton</em> is composed of <em>calcium carbonate and siliceous</em> micro-structures called <u>spicules</u>. Their morphology is so varied that it is used in taxonomy for identification and classification.
There are different kinds of spicules:
- <em>Monoaxonic spicule</em>: needle-shaped, straights or curves
- <em>Tetraxonic spicules:</em> they have four prolongations
- <em>Triaxonic or Hexaxonic spicules</em>
- <em>Poliaxonic spicules </em>
Two terms can be applied to any of these spicules kinds:
- <em>Megaspicules</em>: They are elongated and compose the main architecture of the sponge skeleton
- <em>Microspicules</em>: Variable in shape and size, with ancillary functions
Sponges have few predators thank to the spicule structures and their high toxicity. Many of them are capable of perforating soft tissues and producing urticant substances.
Qualitative deals w/ colors, formation of gas, observable traits
quantitative is measurable like the heights of items (meters, km, miles)
They are termed broad-spectrum antibiotics.
<h3>What are antibiotics?</h3>
Antibiotics are drugs that have the capacity to either inhibit the growth of or kill bacteria and some other microorganisms capable of causing diseases.
Antibiotics are of 2 types:
- Narrow spectrum antibiotics
- Broad spectrum antibiotics
Narrow spectrum antibiotics are effective against a very narrow range of bacteria. They are very specific in their targets.
Broad spectrum antibiotics, on the other hand, are effective against a broad range of bacteria. They can be referred to as multipurpose antibiotics. They do not only eliminate target pathogenic bacteria.
More on antibiotics can be found here: brainly.com/question/10868637
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