Ecological Scale and Population Growth Patterns in Biology Research
Explore concepts related to ecological scale, population growth patterns, and research methodologies in the field of biology through a series of interactive clicker questions. From studying individual organisms to broader ecosystem dynamics, discover the intricacies of ecological research at various scales.
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Biology for a Changing World, 2e Clicker Questions Chapter 21
An ecologist is studying a species of bird in a group of 20. What ecological scale is this? A. Individual B. Population C. Community D. Ecosystem
Why is Isle Royale a great place to base ecological research? A. It is a protected area without human development B. It is an island that is pretty isolated C. The island is big enough to support populations of large animals, but small enough that detailed studies are feasible D. All of the above.
You are an ecologist with two projects: 6 groups of ducks - each group lives 500km from each other and do not mix 10 ant groups - each group lives 1 km from each other and do not mix What ecological scale are you working on? A. Individual B. Population C. Community D. Ecosystem
You are an ecologist whose research focuses on the community level. You are interested in moving towards ecosystem research. What would you add to move to the ecosystem scale? A. Data for more species B. Data for more communities C. Data on environmental factors D. Data on both plants and animals.
Which graph shows what would happen if a population s birth rate is higher than its death rate? Population size Population size Population size Time A Time B Time C
You are studying a population of bacteria in the lab. The population size keeps growing and growing and despite years of research, the growth rate just keeps increasing. What kind of population growth pattern are you seeing? A. Logistic growth B. Capacity growth B. Exponential growth A. Habitat growth
When is the population birth rate less than the death rate? A B C D
What is the carrying capacity of this population? B C A D. Carrying capacity is not reached
A bird species eats a beetle species that eats a tree species. Changes in the bird population have what kind of affect on the tree population? A. Direct effect B. Mixed effect C. Indirect effect D. None of the above
Which is an example of a density- independent influence on population growth? A. Disease B. Temperature C. Food D. Predators
What effect do abiotic factors usually have on populations? A. Density-dependent B. Density-independent
Does food have a density-dependent effect on populations? A. No, the food resources are available regardless of the number of individuals in the population. B. Yes, the availability of food influences the population growth of species that rely on these resources.
