Multiple Choice
What effect would overfishing most likely have on a population of fish in a lake?
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48. Ecology
Introduction to Ecology
Multiple Choice
Which type of ecological relationship is formed when an epiphytic orchid grows on a tree branch in the canopy?
A
Commensalism
B
Mutualism
C
Competition
D
Parasitism
Verified step by step guidance1
Understand the concept of ecological relationships: These are interactions between organisms in an ecosystem. The main types include commensalism, mutualism, competition, and parasitism.
Define commensalism: This is a relationship where one organism benefits while the other is neither harmed nor helped. For example, an epiphytic orchid growing on a tree branch benefits from the support and access to sunlight, while the tree remains unaffected.
Define mutualism: This is a relationship where both organisms benefit. For example, pollinators and flowering plants have a mutualistic relationship where the pollinator gets nectar and the plant gets pollinated.
Define competition: This occurs when organisms vie for the same resources, such as light, water, or nutrients, which can negatively impact both parties.
Define parasitism: This is a relationship where one organism benefits at the expense of the other, such as a parasite feeding on its host. Compare this to the epiphytic orchid, which does not harm the tree, making parasitism an incorrect choice.
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