North Carolina Science Grade 6

Chapter 14: Interactions of Life

Interactions of Life

1.
A drought condition affects an area. Lack of rain is __________ of that area's organisms.
A)an adaptation
B)a limiting factor
C)the community
D)the carrying capacity
2.
A pig is which kind of consumer?
A)decomposer
B)herbivore
C)carnivore
D)omnivore
3.
Your sick puppy is diagnosed with roundworms. What type of symbiotic relationship do the puppy and the roundworms have?
A)mutualism
B)parasitism
C)commensalism
D)cooperative
4.
Which of these is a method used to count the size of a population in a large area?
A)ecology
B)photosynthesis
C)sample counts
D)population density
5.
All the tortoises living in a specific region of a desert ecosystem make up a __________.
A)food chain
B)carrying capacity
C)population
D)biosphere
6.
Earth's surrounding atmosphere is part of its __________.
A)food chains
B)biosphere
C)niche
D)population
7.
All populations living together in an ecosystem are called a __________.
A)community
B)sample count
C)predator
D)biosphere
8.
Which of these limits the size of a population?
A)a decrease in competition
B)an increased amount of water
C)an increase in the number of prey
D)a reduction in living space
9.
Which of these organisms is a producer?
A)fern
B)trout
C)snake
D)bear
10.
A population of wolves lives in a region with plenty of food, water, and living space. Which of these is true?
A)The wolf population faces increased competition.
B)The wolf population will become carnivores.
C)The wolf population has excellent biotic potential.
D)The wolf population lives in a poor habitat.
11.
Which of these factors helps a population grow?
A)increased numbers of predators
B)reduced amounts of food
C)plenty of water
D)limited living space
12.
Which of these is a method used to count a wildlife population?
A)commensalism
B)study-a-niche
C)recommended spacing
D)trap-mark-release
13.
A salamander's habitat is which of these?
A)a forest floor
B)the arctic region
C)a hollow cactus
D)the ocean
14.
The largest number of organisms in a species that can live in an ecosystem at one time is its __________.
A)symbiosis
B)commensalism
C)sample count
D)carrying capacity
15.
Consumers that capture and eat other consumers are __________.
A)food chains
B)producers
C)herbivores
D)predators
16.
__________ limits population size.
A)Parasitism
B)Competition
C)Symbiosis
D)Mutualism
17.
Clown fish swim among a sea anemone's tentacles without being stung. What type of symbiotic relationship do the clown fish and the sea anemone have?
A)parasitism
B)commensalism
C)consumerism
D)mutualism
18.
Which of these is true for human populations?
A)Countries with higher death rates than birth-rates will increase their population size.
B)Countries with higher birthrates than death rates have growing populations.
C)Countries with low death rates will always have high birthrates.
D)Countries always have higher birth-rates than death rates.
19.
You decide to raise mealworms in two identical containers at home. You count the number of mealworms in each container to compare __________.
A)population densities
B)the death rate
C)parasitism
D)homeostasis
20.
Which of these animals has a habitat in the cold northern regions?
A)rattlesnakes
B)scarlet macaws
C)polar bears
D)howler monkeys
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