Define adaptation What is natural selection How do critical factors influence sp

ID: 88706 • Letter: D

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Define adaptation What is natural selection How do critical factors influence species distribution? 4 characteristics defining habitat? What is a niche? Characteristics that might lead a species to be easily preyed upon (selected) and characteristics that would lead a specie to NOT be easily preyed upon (selected)? Specialist vs. generalist? What is resource partitioning? Intraspecific competition vs. interspecific competition Defense mechanism: a way to avoid being eaten Batesian mimicry: two look alike, only one harmful Mullerian mimicry: two look alike, both harmful What is symbiosis? What are the 3 types? 1. Mutualism 2. Commensalism 3. Parasitism Can you describe each of the above? Ex: Commensalism is an intimate relationship between two organisms where one organism benefits from the relationship and the other neither benefits nor is harmed. Primary succession vs. secondary succession What is a pioneer species?

Explanation / Answer

ANSWERS:

1. ADAPTATION- It is the present state or the process that leads an organism to survive in the existing environoment in a better way by making certain changes.

2. NATURAL SELECTION-

It is process of adaptation by which an individual undergoes a differential survival along with a reproductive advantage. This is often because of a different phenotype than others of the same species. According to Charles Darwin, natural selection is the main process that drives the evolution.

3. CRITICAL FACTORS AFFECTING SPECIES DISTRIBUTION:

Biotic factors which include the interspecies as well as the intraspecies interactions such as-

The abiotic factors affecting the same are :

4. HABITAT- The area where an organism lives and grows is it's habitat. The 4 characters that define a habitat are :

5. NICHE- The position, function or the pattern the of an organism in its ecological community is known as its niche. Niche affects the way in which an organism responds to the Available resources for its survival and reproduction by interacting with various biotic and the abiotic characters.

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Define adaptation What is natural selection How do critical factors influence sp

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