Dynamic Ecosystems

Which of the following is in the correct order of smallest to largest?

• biosphere, population, organism, community, ecosystem
• organism, community, population, ecosystem, biosphere
• organism, community, ecosystem, population, biosphere
• organism, population, community, ecosystem, biosphere

Which of the following is a biotic factor

• water
• atmosphere
• grass
• soil

If there are 20 head of cattle, 10 sheep, and 1 goat in an ecosystem, what is the population of cattle?

• 31
• 9
• 1
• 20

If there are 20 head of cattle, 10 sheep, and 1 goat in an ecosystem, what makes up the community?

• cattle, sheep, and a llama
• all of the biotic and abiotic factors
• Cattle, sheep, a goat, and all other species of plants in the pasture
• cattle

If there are 20 head of cattle, 10 sheep,1 goat, and fescue grass for them to eat, how many species are there

• 31
• 32
• 3
• 4

There should be more flowers growing in my garden, but there is a tree blocking sunlight to them. This lack of sunlight is a __________ for the flowers

• climax community
• limiting factor
• resource
• bore

During a drought, the pond level gets very low. There is no longer enough water to support the animals surrounding it. Some of the animals die and others relocate to an area with more water. In this case water is a _________________.

• climax community
• limiting factor
• resource
• bore

If there was an unlimited water supply, plenty of food, and perfect conditions for the sheep in the pasture, the population of sheep would reach their ______________.

• biotic potential
• climax community
• limiting factor
• carrying capacity

Most populations reach their biotic potential

• false
• true

The ____________ describes the largest number of individuals of one species that an ecosystem can support over time

• limiting factor
• carrying capacity
• climax community
• biotic potential