Olafactory bulbs because it has to do with nerve signals and neurons. Brain because it is the center of the nervous system and the closest to the nose in terms of the nervous system.
<h2>Homologous genes get Highly Conserved</h2>
Explanation:
- Eukaryotes are those organisms whose cells possess a nucleus which is enclosed within membranes.
- Plants such as Apple trees
- Animals such as Dogs and cats
- Fungi such as Mushrooms
- Protists such as Paramaecium
- Amoeba are the examples of Eukaryotes.
- Eukaryotic cell possess several rod shaped chromosomes.
- Eukaryotic cells contain membrane bound organelles such as Golgi apparatus and Mitochondria, Chloroplast.
- Asexual and Sexual types of reproduction is seen in Eukaryotes.
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.
