Order Ecosystems Discussion Assignment

Order Ecosystems Discussion Assignment
Order Ecosystems Discussion Assignment
1. In the limestone caves of Illinois, food comes from only a few sources.
Heavy rains wash plants and other organic debris into the caves
occasionally, but most of the food comes from outside by way of
animals. Sometimes animals die deep in these caves, but much of the
underground ecosystem depends on their droppings. Raccoon, frogs,
cave crickets, and especially bats forage outside for food and leave fecal
matter on cave floors. Bacteria and fungi break down these droppings
into their mineral constituents and are themselves eaten by animals,
such as millipedes and flatworms. Spiders, salamanders, and other
animals catch and eat these animals when possible, but most cave
dwellers can survive for a very long time without any food at all.
(A) What producers does this cave ecosystem depend upon?
(B) Which of these species are the cave equivalent of primary
(C) Which of these species are the secondary consumers?
2. A temperate rain forest, such as the one on the west coast of
North America, primarily has
(A) conifer trees, wet climate, mild temperatures
(B) flat-leaf trees, wet climate, hot temperatures
(C) conifer trees, dry climate, mild temperatures
(D) flat-leaf trees, wet climate, mild temperatures
3. The role that organisms play in an ecosystem is known as a(n)
(A) old-growth forest
(B) landscape
(C) niche
(D) community forest
26 ❯ 500 AP Environmental Science Questions to Know by Test Day
4. Ecosystems typically include all of the following EXCEPT
(A) decomposers
(B) producers
(C) abiotic chemicals
(D) speculators
5. Plants use nitrogen to make
(A) proteins
(B) sugar
(C) CO2
(D) O2
Order Ecosystems Discussion Assignment
6. Which of the following types of organisms are usually the first to
suffer when an ecosystem is disrupted?
(A) decomposers and detritus feeders
(B) producers
(C) primary consumers
(D) tertiary consumers
7. All of the following help determine an animal’s niche EXCEPT
(A) its temperature-range tolerance
(B) physical damage it has sustained
(C) its adaptive traits
(D) its typical territorial size
8. All of the following are major carbon storage reservoirs EXCEPT
(A) fossil fuels
(B) sedimentary rocks
(C) the air
(D) the earth’s core
Living World: Ecosystems ❮ 27
9. Deep in the ocean, falling calcium-carbonate shells dissolve at a
certain depth, while they collect at a slightly shallower depth. The
dividing line between these depths is known as
(A) a thermocline
(B) a lithosphere
(C) the estuarine zone
(D) a lysocline
10. Unless these two natural phenomena are in balance, global
atmospheric carbon dioxide accumulates rapidly:
I. respiration
II. photosynthesis
III. sedimentation
IV. subduction
(A) I and II
(B) II and III
(C) I and IV
(D) III and IV
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