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AP Biology MCQ Question with Answer

AP Biology MCQ with detailed explanation for interview, entrance and competitive exams. Explanation are given for understanding.

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Question No : 22
What is the term for the maximum number of individuals of a species that an ecosystem can support indefinitely?

Carrying capacity
Population density
Limiting factor
Exponential growth
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Question No : 23
Which class of vertebrates includes animals with scales, a bony skeleton, and a two-chambered heart?

Mammals
Amphibians
Reptiles
Birds
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Question No : 24
What is the primary function of the mitochondria?

Protein synthesis
Energy production
Lipid synthesis
Waste elimination
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Question No : 25
What type of microorganism is responsible for turning milk into yogurt and cheese?

Bacteria
Virus
Fungus
Protist
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Question No : 26
What is the primary pigment responsible for photosynthesis in plants?

Chlorophyll
Carotene
Xanthophyll
Phycobilin
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Question No : 27
What term describes the role a species plays in its ecosystem, including its interactions with other species and its use of resources?

Niche
Habitat
Territory
Ecosystem role
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Question No : 28
Which of the following is a direct benefit of biodiversity to humans?

Increased greenhouse gas emissions
Decreased agricultural productivity
Development of new medicines
Soil erosion
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