Answer:. whether or not the organisms thrive in extreme conditions
Explanation: i took the class
Answer:
Most cells within planarians tend to be very close to their gastrovascular cavity, in addition to their external environments. Also, planarians have the ability for oxygen and carbon dioxide to diffuse through the cells on their body walls: this makes it unnecessary for these varieties of flatworms to need a dedicated bodily system.
I think the deficiency of dedicated respiratory and circulatory systems in Planarians does not cause a problem because none of their cells are far removed from the gastrovascular cavity or from the external environment. Planarians are free-living flatworms and form the class Turbellarians in the Phylum Platyhelminthes. Flatworms have three tissue layers, that is the ectoderm, mesoderm, and endoderm.
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Explanation:
Answer AND Explanation:
Darwin describes natural selection as a process whereby nature selects those organisms that have favourable characteristics to be parents of the next generation. The individuals possessing the favourable traits are better suited to the prevailing environmental conditions. This enables them to stand a better chance to survive in the struggle for existence due to limited resources.
Answer:
The control variable is the soldier.
Explanation:
The same soldier is used throughout the test
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Below are the choices:
<span>A) lysosomes
B) free cytoplasmic ribosomes
C) roughER
D) plasmodesmata
E) Golgi vesicles
</span>
The structure is the site of the synthesis of proteins that may be exported from the cell is roughER
