Biodiversity And Ecology (Chapter 5 & 8)

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Quizzes Created: 1 | Total Attempts: 144

Questions: 8 | Attempts: 145 | Updated: Mar 21, 2023

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Biodiversity is the aspect of having different organisms or plants in the same habitat, while ecology is the study of living organisms in their own habitat. How good are with this subject? Find out in the quiz below.

Questions and Answers

1.

If you could choose, which would you rather be, a generalist or a specialist? Give me an example of a species from your choice, and explain why you chose what you did.
2.

The earth's long-term patterns of speciation and extinction have been affected by which of the major factors listed below:
- A.
  
  Large-scale movement of the continents (continental drift)
- B.
  
  Gradual climate change caused by continental drift and slight shifts in earth's orbit
- C.
  
  Rapid climate change caused by volcanoes, meteorites and astroids striking earth, and the release of large amounts of methane trapped beneath the ocean floor
- D.
  
  All the answers are correct
Correct Answer
D. All the answers are correct

Explanation
The earth's long-term patterns of speciation and extinction have been affected by the large-scale movement of the continents (continental drift), gradual climate change caused by continental drift and slight shifts in the earth's orbit, and rapid climate change caused by volcanoes, meteorites, and asteroids striking the earth, and the release of large amounts of methane trapped beneath the ocean floor. These factors have all played significant roles in shaping the Earth's biodiversity over time.

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3.

Biologist estimate that _______ of all species that have ever existed are now extinct.
- A.
  
  About 50%
- B.
  
  99.9%
- C.
  
  85.9%
- D.
Correct Answer
B. 99.9%

Explanation
Biologists estimate that 99.9% of all species that have ever existed are now extinct. This high percentage suggests that the vast majority of species that have ever lived on Earth have not survived to the present day. Extinction is a natural process that occurs over time, and the fact that such a large percentage of species have gone extinct highlights the ever-changing nature of life on our planet.

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4.

Suppose that certain individuals in a population of carnivores (ex. owls) become better at hunting prey (ex. mice). Because of genetic variation, certain individuals of the prey have traits that allow them to escape or hide from their predators, and they pass these traits on to their offspring. However, a few individuals in the predator population also may have traits (ex. better eyesight or quicker reflexes) that allow them to hunt the better-adapted prey successfully. Thus, passing these traits on to their offspring. This scenario is an example of which of the following processes?
- A.
  
  Coevolution
- B.
  
  Directional natural selection
- C.
  
  Microevolution
- D.
  
  Stabilizing natural selection
Correct Answer
A. Coevolution

Explanation
This scenario is an example of coevolution because both the predator and prey populations are evolving in response to each other. The prey population is developing traits that allow them to escape or hide from their predators, while the predator population is developing traits that allow them to successfully hunt the better-adapted prey. This reciprocal evolution between two species is known as coevolution.

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5.

Where is most of the world's biodiversity found?
- A.
  
  Tropical rain forests
- B.
  
  Coral reefs
- C.
  
  Deep seas
- D.
  
  Large tropical lakes
- E.
  
  All of the choices are correct
Correct Answer
E. All of the choices are correct

Explanation
All of the choices are correct because each of these ecosystems supports a high level of biodiversity. Tropical rainforests are known for their rich variety of plant and animal species. Coral reefs are home to a diverse range of marine life. Deep seas contain a vast array of unique and often undiscovered species. Large tropical lakes also support a wide range of biodiversity. Therefore, all of these options can be considered as locations with high levels of biodiversity.

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6.

Competition between individuals of the same species for the same resources is called _________.
- A.
  
  Mutualistic competition
- B.
  
  Symbiotic competition
- C.
  
  Interspecific competition
- D.
  
  Intraspecific competition
Correct Answer
D. Intraspecific competition

Explanation
Intraspecific competition refers to the competition between individuals of the same species for the same resources. This type of competition occurs when individuals within a species compete for limited resources such as food, water, territory, or mates. It can lead to the evolution of traits that enhance an individual's ability to compete, such as increased aggression or better foraging skills. Intraspecific competition is an important factor in population dynamics and can influence the distribution and abundance of individuals within a species.

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7.

The pollination relationship between flowering plants and animals such as insects, birds and bats is one of the more common forms of a symbiotic relationship known as _______________.
- A.
  
  Commensalism
- B.
  
  Mutualism
- C.
  
  Parasitism
- D.
  
  Symbiosism
Correct Answer
B. Mutualism

Explanation
Mutualism is the correct answer because it refers to a symbiotic relationship where both parties involved benefit from the interaction. In the case of pollination, flowering plants provide nectar and pollen as a food source for animals like insects, birds, and bats. In return, these animals transfer pollen from one flower to another, facilitating the plants' reproduction. This mutually beneficial relationship ensures the plants' survival and genetic diversity, while the animals receive a source of nutrition.

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Biodiversity And Ecology (Chapter 5 & 8)

If you could choose, which would you rather be, a generalist or a specialist? Give me an example of a species from your choice, and explain why you chose what you did.

The earth's long-term patterns of speciation and extinction have been affected by which of the major factors listed below:

Biologist estimate that _______ of all species that have ever existed are now extinct.

Where is most of the world's biodiversity found?

Competition between individuals of the same species for the same resources is called _________.

The pollination relationship between flowering plants and animals such as insects, birds and bats is one of the more common forms of a symbiotic relationship known as _______________.