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den301095 [7]
3 years ago
9

A. True

Biology
1 answer:
wlad13 [49]3 years ago
7 0

i would have to say true

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True or False. Animals vary tremendously in structure. Nevertheless, they can be categorized into a few basic body plans based o
NNADVOKAT [17]

Answer:

True

Explanation:

Animals can be categorized into 3 based on body symmetry

  • <em>Those without any body symmetry (asymmetrical)</em>
  • <em>Those with bilateral body symmetry (bilateria)</em>
  • <em>Those with radial body symmetry (Radiata)</em>

Animals can be categorized into 2 based on number of embryonic germ layer;

  • <em>Those with two layers - endoderm and ectoderm (diplobastic)</em>
  • <em>Those with three layers - mesoderm in addition to ectoderm and endoderm (triploblastic)</em>

Animals can be categorized based on presence/absence of body cavity or coelom;

  • <em>No body cavity - acoelomates</em>
  • <em>False body cavity - pseudocoelomates</em>
  • <em>True body cavity - coelomates</em>

Animals can be categorized into 2 based on characteristics of embryonic development;

  • <em>Deuterostomes</em>
  • <em>Protosomes</em>
5 0
3 years ago
Because algae undergo ________________________, they produce much of Earth’s atmospheric oxygen.
Paladinen [302]
B. Photosynthesis is the answer
3 0
3 years ago
_______ is an elastic protein that connects tubulin doublets in cilia and flagellae. the resultant bridges play an important rol
Firdavs [7]
Nexin

This is the elastic protein among tubulin doublets that link them together for ciliary and flagellae structures.
Cilia and flagella are cellular structures that facilitate movement of the cell from one area to another.

This protein also inhibits movement on microtubules from axonemes.
3 0
3 years ago
What part of the brain is responsible for monitoring incoming information and alerting higher brain areas?
Lerok [7]

The right answer is the reticular activating system (RAS).

The Reticular Activation System. This is an element of your brain that is useful for capturing your attention and for achieving your goals more easily.

Let's take an example immediately to illustrate what the RAS really means: A loudspeaker announces your name and asks you to pick up your daughter at the reception. And there, your brain, your RAS gets in motion: your attention is at its highest level and you distinctly and clearly distinguish the message and its content addressed to you.

Thus, thanks to the RAS, which starts automatically in your brain, the relevant information is brought to your attention. The RAS plays a role of intermediary, a filter between the conscious part and the unconscious part of your brain. The latter can not store all the information, it is necessary that a relevant sorting is done between them. It's the RAS that does it. It is he who decides what is worthy of attention and what is not. As soon as it judges that information concerns you to the highest degree, he will "wake up" your brain that will absorb it. Thus, as part of our example, the RAS has been instructed to wake up your attention as soon as your name is spoken in the speaker.

8 0
3 years ago
Fusion reactions occur between what kinds of elements?
a_sh-v [17]
E. very small atoms

fusion reaction in which two atoms of hydrogen combine together or fuse to form an atom of helium
6 0
3 years ago
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