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Unit 9: Energy and Cycles Flashcards | StudBud
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Unit 9: Energy and Cycles
Unit 9: Energy and Cycles
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StudBud Administration
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Ecology, energy, nutrient cycles
Flashcards
23 cards
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Practice quiz
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Questions
23
Answers
1
A major point in studying ecology is that
All living and nonliving things are connected
Nonliving things do not affect the environment
Humans have no effect on the biosphere
All living things are connected
2
The main source of energy for life on Earth is...
Sunlight
Ocean tides
Volcanism
Heat from the core
3
Which level of the ecological pyramids do non-vegetarian humans occupy?
Tertiary consumers (4th)
Secondary consumers (third)
Primary producers (first)
Primary consumers (second)
4
A group of individuals that belong to the same species and live in the same area are a(n)
community
species
population
organism
5
Energy flows from
mouse to the grass
hawk to the snake
grass to hawk
hawk to mouse
6
What type of ecological pyramid is shown below?
Energy pyramid
Trophic pyramid
Pyramid of numbers
Biomass pyramid
7
It is true that matter ________ and energy ______.
Cycles, cycles
Flows, cycles
Flows, flows
Cycles, flows
8
Photosynthesis...
Can happen on land or in the ocean
Is only performed by autotrophs
Is only performed by heterotrophs
Can only happen on Land
9
What type of food creation requires sunlight?
Photosynthesis
None of these
Nitrogen fixation
Chemosynthesis
10
When water falls from clouds in the form of rain, sleet, snow, or hail, it is called
Nitrogen fixation
Transpiration
Evaporation
Precipitation
11
Organisms that eat dead and decaying matter are known as
Decomposers
Secondary consumers
Scavengers
Tertiary consumers
12
When gaseous water vapor loses energy and becomes a liquid it is..
Condensation
Evaporation
Runoff
Photosynthesis
13
What are the products of photosynthesis?
carbon dioxide, water
glucose, oxygen
water, oxygen
energy, glucose
14
Nutrient cycles that travel through both living and nonliving parts of an ecosystem are...
Biogeochemical
Biological
Chemical
Geologic
15
What are the 3 types of ecological pyramids
exit, biomass, numbers
energy, biomass, numbers
energy, biology, numbers
energy, biomass, nickels
16
A pyramid of numbers can tell you
the mass of plant matter found in an ecosystem
how many kcal of sunlight is used every day
the total number of secondary consumers
the percent of energy lost between trophic levels
17
What compounds begin cellular respiration?
carbon dioxide, water, energy
oxygen, water, energy
oxygen, glucose, energy
oxygen, glucose
18
The water cycle...
Ceases to occur in the winter
includes transpiration, runoff, and precipitation
includes Photosynthesis and Cellular respiration
Is the most important cycle in the biosphere
19
These organisms break down organic matter, harnessing the energy stored in chemical bonds
Decomposers
Producers
Omnivores
Detritivores
20
The process that takes carbon dioxide out of the air and replenishes oxygen is
Condensation
Cellular respiration
Nitrogen fixation
Photosynthesis
21
How much energy is passed on between trophic levels, on average?
90%
25%
50%
10%
22
Water is given off through plants' leaves as a byproduct of photosynthesis in this process
Condensation
Transpiration
Runoff
Precipitation
23
Bacteria in the soil convert N2 from the atmosphere into ammonia through the process of
Photosynthesis
Denitrification
Nitrogen fixation
Transpiration
