AP BIOLOGY

EVOLUTION

EVIDENCE FOR EVOLUTION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What type of natural selection is described in the scenario below:This might happen in shallow water among rocks. Light-colored oysters are more cryptic Cryptic Coloration:Coloration that allows an organism to match its background and hence become less vulnerable to predation or recognition by prey. (less easy for a predator to see) because they match the rock color. Dark-colored oysters blend into the shadows cast by the rocks. In this case, intermediate-colored oysters would be most heavily preyed upon by the crabs, and very light and very dark oysters would survive to reproduce.
A
Directional
B
Disruptive
C
Stabilizing
D
Darwainian
Explanation: 

Detailed explanation-1: -For example, evolving long necks has enabled giraffes to feed on leaves that others can’t reach, giving them a competitive advantage. Thanks to a better food source, those with longer necks were able to survive to reproduce and so pass on the characteristic to the succeeding generation.

Detailed explanation-2: -Examples of Natural Selection Examples in Animals During times of drought, the finches with the larger beaks survived better than those with smaller beaks. During rainy times, more small seeds were produced and the finches with smaller beaks fared better.

Detailed explanation-3: -Eastern Screech Owl. Camouflage, also called cryptic coloration, is a defense or tactic that organisms use to blend in with their surroundings. Background matching is perhaps the most common camouflage tactic. The feathers on this eastern screech owl, for instance, almost perfectly match the bark on trees it sits in.

Detailed explanation-4: -Individuals avoid visually-hunting predators, or, if they ARE predators, avoid being detected by visually aware prey using the following techniques: Camouflage-also called crypsis, cryptic coloration. Individuals rest, and have coloration and patterns similar to those in the visual background.

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