FREE ECOLOGY AND STUDY GAMES ABOUT ECOLOGY 3

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FREE ECOLOGY AND STUDY GAMES ABOUT ECOLOGY 3

EXAM QUESTIONS

Actual Qs and Ans Expert-Verified Explanation

This Exam contains:

-Guarantee passing score -198 Questions and Answers -format set of multiple-choice -Expert-Verified Explanation Question 1: Joseph Connel: Barnacle example: What happened to Chthalamus when Balanus was removed?

Answer:

Cthalamus spread: It was being confined to the upper rocks because of balanus

Question 2: When do we see intraspecific competition?

Answer:

When there are limited resources

Question 3: What is an example of an awesome pioneer species?

Answer:

Lichens!Question 4: Community stages: What do you see in the climax stage?

Answer:

Trees grow taller. They block out the light, thereby thinning the understory.

Question 5: Modeling competion: What do you see if: INTRAspecific > INTERspecific?

Answer:

Both species will exist Question 6: Exploitation deals with how ______ resources are being used _______ _______.

Answer:

Quickly, over time

Question 7: What are top-down controls also known as?

Answer:

The trophic cascades hypothesis. It shows the effects of predators on prey, often showing tertiary consumers.Question 8: Interactions: What happened with facilitation in our game? (Early vs late)

Answer:

Late won and moved forward, while early moved back

Question 9: What does the resource matching rule do?

Answer:

Matches the number of competitors to the amount of resources Question 10: Community Stages: Secondary succession (Temperate deciduous forest) : What are some examples of what you would see in the primary stage?

Answer:

crabgrass, horseweed, aster, ragweed Question 11: Community Stages: Secondary succession (Temperate deciduous forest) : What are some examples of what you would see in the climax stage?

Answer:

Oaks and Hickories Question 12: A keystone species is like the critical piece in an arch. What happens if you remove it?

Answer:

The arch collapses.

Question 13: What are stalked diatoms sensitive to?

Answer:

They are more sensitive to pesticides and herbicides than motile diatoms

Question 14: What are pioneer species limited by?

Answer:

Nitrogen. They get it from nitrogen fixing bacteria and soil

Question 15: What is the fundamental niche?

Answer:

Biotic and abiotic conditions that predict where a species may live (Where it SHOULD live)

Question 16: What is biomass?

Answer:

The total mass of all living species in an area.Question 17: Guilds and life forms DO NOT reflect _____ _____, only _____ _____.

Answer:

evolutionary history, energy transfers Question 18: Community stages: Primary Succession:What are two examples of plants you would see in the intermediate stage?

Answer:

Small shrubs and trees

Question 19: Are direct interactions costly? Why or why not?

Answer:

Yes - Takes time, energy, and can result in injury Question 20: Community: Urchins, Sea Otters, and Kelp: What do sea otters do?

Answer:

Generate heat. They have a fast metabolism so they eat a lot. They can eat urchins.

Question 21: What is immigration?

Answer:

The movement of new individuals into a population

Question 22: What is an area of sympatry?

Answer:

Where two species exist together

Question 23: Explain the Acacia-Ant symbiosis

Answer:

Tree has thorns that ants libe in. Tree has nectaries for food that ants eat. Ants protect the tree from herbivores. ALSO caterpillars - secrete a sugary substance for ants to eat so they can feed on the tree.Question 24: Life History traits: What happens to the seeds of late successional plants?

Answer:

They are poorly dispersed and end up close to the parent plant. They are moved by either gravity or mammals.Question 25: What is one example of something that a parasitoid can alter in terms of behavior of the host?

Answer:

Movement patterns (Ex: make it move to water, climb upwards, or stay still)

Question 26: What happens in the inhibition model?

Answer:

Early occupants modify the environment and make it less suitable for late arrivals. Other species can only invade if the area is disturbed by events such as fires and landslides.Question 27: Primary succession: What role do mosses play?

Answer:

They can grow in little soil and as they die they add organic matter to the soil so that flowering plants can grow.