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AP Biology Unit 8B: Population Ecology & Environmental Systems — practice questions

Explore 53 free Unit 8B: Population Ecology & Environmental Systems questions in AP Biology Biology. Open each question or exercise to read its content, reference answers and available explanation.

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Unit 8B: Population Ecology & Environmental Systems questions and exercises with answers

Showing questions 1–30 of 53.

Resources such as forests, wildlife, wind and solar energy, which can replenish themselves naturally, are classified as:Read the answer and worked solution →The Chipko movement of 1973 was a non-violent agitation aimed at:Read the answer and worked solution →The removal of the upper, fertile layer of soil by the action of wind and water is called:Read the answer and worked solution →The Wildlife Protection Act in India was established in which year?Read the answer and worked solution →Solar cells (photovoltaic devices) generate electricity because they are made of silicon that:Read the answer and worked solution →Biogas, commonly called 'Gobar gas', is produced by the decomposition of animal and plant wastes in the:Read the answer and worked solution →Which statement about wind energy is INCORRECT?Read the answer and worked solution →The technique of collecting and storing rainwater so that it percolates underground to recharge the groundwater is known as:Read the answer and worked solution →In Tamil Nadu, the traditional interconnected tanks or lakes used to harvest and divert rainwater between villages are called:Read the answer and worked solution →Which method of solid-waste disposal involves digesting biodegradable matter by microbes or earthworms to form humus?Read the answer and worked solution →Which toxic metal present in e-waste is specifically noted to damage the central and peripheral nervous system and affect brain development in children?Read the answer and worked solution →The statistical study of population dynamics is called:Read the answer and worked solution →The total number of individuals in a population is its:Read the answer and worked solution →The number of individuals within a specific area or volume is the:Read the answer and worked solution →Which counting technique is used for immobile organisms such as plants?Read the answer and worked solution →Which technique do scientists use for mobile organisms such as mammals, birds or fish?Read the answer and worked solution →Tables detailing the life expectancy of individuals within a population are called:Read the answer and worked solution →Humans and most primates exhibit which survivorship curve?Read the answer and worked solution →Birds are given as an example of which survivorship curve?Read the answer and worked solution →A species that reproduces only once during its lifetime and then dies shows:Read the answer and worked solution →Species that reproduce repeatedly during their lives show:Read the answer and worked solution →Plotting population size N over time under unlimited resources produces which curve shape?Read the answer and worked solution →In logistic growth, expansion levels off when the population reaches the environment's:Read the answer and worked solution →The maximal growth rate for a species, written rmax, is called its:Read the answer and worked solution →Most density-dependent factors are described as biological in nature and include:Read the answer and worked solution →Forest fires and volcanic eruptions are given as examples of factors that are:Read the answer and worked solution →K-selected species are described as species selected by environments that are:Read the answer and worked solution →A female-biased sex ratio or an age structure rich in reproductive-age members can increase:Read the answer and worked solution →A dense population reduced by a density-independent factor will recover:Read the answer and worked solution →Match each population termRead the answer and worked solution →

Worked practice questions

Resources such as forests, wildlife, wind and solar energy, which can replenish themselves naturally, are classified as:

  1. Non-renewable resources
  2. Fossil fuels
  3. Conventional resources
  4. Renewable resources
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Correct answer: D. Renewable resources

1. Resources that renew themselves through natural recycling or good management are renewable. 2. Forests, wildlife, wind and solar energy are given as examples of renewable resources. 3. Mineral ores, coal and petroleum are non-renewable fossil fuels, so A, B and C are traps. 4. Hence the answer is D. _Source: Samacheer Kalvi (TN SCERT) Class 10 Science, Unit "Environmental Management", p.322_

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The Chipko movement of 1973 was a non-violent agitation aimed at:

  1. Protecting and conserving trees
  2. Preventing the hunting of wild animals
  3. Stopping the construction of large dams
  4. Harvesting rainwater in villages
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Correct answer: A. Protecting and conserving trees

1. The Chipko movement, from the word 'embrace', had villagers hugging trees. 2. Its aim was the protection and conservation of trees, achieving a ban on tree-felling in Himalayan forests. 3. It was not about hunting, dams or rainwater, so B, C and D are traps. 4. Hence the answer is A. _Source: Samacheer Kalvi (TN SCERT) Class 10 Science, Unit "Environmental Management", p.323_

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The removal of the upper, fertile layer of soil by the action of wind and water is called:

  1. Soil erosion
  2. Deforestation
  3. Desertification
  4. Afforestation
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Correct answer: A. Soil erosion

1. The top soil layer holds humus and mineral salts vital for plant growth. 2. Its removal by wind and water is defined as soil erosion, which lowers soil fertility. 3. Deforestation is loss of forests, desertification is land turning to desert, and afforestation is planting trees, so B, C and D are wrong. 4. Hence the answer is A. _Source: Samacheer Kalvi (TN SCERT) Class 10 Science, Unit "Environmental Management", p.325_

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