Unit 7 Test Review Question Preview (ID: 41707)
Organisms And Their Environment.
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A hurricane hits a coastal prairie and destroys the habitat. Years later there is an appearance of small plants with rapidly spreading roots. This vegetation describes-
a) secondary succession
b) a microhabitat
c) primary succession
d) biodiversity
A student wants to conduct an investigation to find out how sunlight affects individual leaves on a tomato plant. Which instrument will be most necessary for her to carry out this investigation?
a) hand lens
b) microscope
c) ruler
d) balance
Complete this statement. The more diverse an ecosystem is -
a) the more stable it is
b) the more threatened its populations are
c) the more similar the species will be
d) the fewer varieties of species are present
Which of the following sequences most likely represents ecological succession on a recently abandoned wheat field?
a) grasses - flowering plants - shrubs - native trees
b) native trees - shrubs - flowering plants - grasses
c) shrubs - grasses - native trees - flowering plants
d) flowering plants - native trees - shrubs - grasses
Which of the following situations contributes to the sustainability of an ecosystem?
a) increase in biodiversity
b) decrease in biodiversity
c) extinction of a population from the ecosystem
d) removal of many populations of organisms
The role of a pioneer species in primary succession is to change a bare habitat into one that is suitable for other organisms. A species that is responsible for primary succession in an ecosystem is most likely able to-
a) carry out photosynthesis
b) survive any predator
c) live at high altitudes
d) migrate during the winter
What is the relationship between ecological succession and equilibrium in an ecosystem?
a) Ecological succession leads to equilibrium in an ecosystem.
b) Ecological succession prevents ecosystems from ever reaching equilibrium.
c) There is no relationship between ecological succession and equilibrium.
d) Ecological succession and equilibrium are the same thing.
During 2013, the state of California experienced many forest fires. In some areas fires burned the forest completely down to ground level. Which of the following is most likely to appear as the first stage of secondary succession?
a) weeds
b) soil
c) trees
d) woody shrubs
The growth of which of the following usually occurs first in primary succession on a bare rock?
a) lichens
b) grasses
c) trees
d) shrubs
A golf course is an area in which man's intervention prohibits nature from maintaining a balance. If this area was left unattended for numerous years, what would you observe as this area attempts from man's impact?
a) The progression would include small bushes, soft wood trees and then be followed by hard wood trees.
b) The area has been maintained in its present state for a long time so therefore there would not be much change.
c) Wind and rain would wash the top soil away and the area would progress through a natural succession.
d) Hard wood trees would grow, and would be followed by the soft wood trees which will help with soil erosion in the area.
Two farmers plant fields. Farmer 1 has 2 crops; farmer 2 has 16 crops. How are the farmers fields similar to how biodiversity allows an ecosystem to be stable?
a) The more biodiverse an ecosytem is the more stable the environment is.
b) The more biodiverse an ecosystem is the less stable the ecosystem is.
c) Biodiversity and stability are not related.
d) The less biodiverse an ecosystem is the more stable the ecosystem is.The
Two farmers plant fields. Farmer 1 has 2 crops; farmer 2 has 16 crops. Which farmer's field is more sustainable?
a) Farmer 2
b) Farmer 1
c) Both are equally sustainable.
d) Neither field will be sustainable.
Which sequence is missing from the levels of organization list?
a) organism - organ system - organ
b) organ system - organ - organism
c) organ system - organism - organ
d) organism - organ - organ system
Which biome would provide for a more diverse population of plants and animals?
a) A forest biome would provide more resources such as shelter, food, and water.
b) A desert biome would provide more resources such as shelter, food, and water.
c) A forest and a desert would both provide the same amount of resources.
d) Neither a forest or a desert has an advantage over the other.
Which ecosystem would most likely have the lowest biodiversity and population 3 years later?
a) After a lava flow creates a new section of land.
b) After clearing land for a highway.
c) After a river floods a cornfield.
d) After a forest fire destroys the plant growth.
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