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Cummings Semester Final Exam Flashcards | StudBud
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Cummings Semester Final Exam
Cummings Semester Final Exam
30 terms
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Fall semester exam to cover the 7th grade TEKS studied
Flashcards
30 cards
F
Practice quiz
P
Host live
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Questions
30
Answers
1
The chemical substances a plant requires to perform photosynthesis are
Oxygen and carbon dioxide
Carbon dioxide and glucose
Carbon dioxide and water
Oxygen and water
2
Which of the following shows the correct order of steps in the scientific method?
A, C, E, D, B
E, A, C, B, D
A, E, D, C, B
E, C, A, B, D
3
Photosynthesis is a process in which
the plant changes carbon dioxide into water
plants change radiant energy into chemical energy
the plant draws water and nutrients through the roots
the plant makes food from oxygen
4
Which of the following best describes the role that decomposers play in natural habitats?
They keep nutrients cycling through the ecosystem
They help balance the # of producers and consumers
They turn solar energy into sugars
They function as autotrophs
5
Dumping used oil around a fence post hurts the environment because the oil -
rots the base of the fence post and attracts harmful insects
kills weeds that are important
attracts more insects that will take over his yard
goes deep into the soil and pollutes the groundwater
6
Which two organisms have a predator-prey relationship?
Blue crabs and rangia clams
Copepods and amphipods
Sturgeons and blue crabs
Shad and sturgeons
7
Which BEST represents the changes in the number of species over time?
D
A
B
C
8
Why can wildfires be considered beneficial, or useful, to some ecosystems?
cause some animals to grow better
can never be beneficial to ecosystems
cause the wildlife to migrate
burn off thick growth and cause seeds to germinate
9
Which of these lists the correct order of ecological succession on the volcanic island Surtsey?
II,IV, I, III
IV,III, I, II
III,I, II, IV
I,II, IV, III
10
A plant with broad, flat leaves is best adapted for –
absorbing light in a rainforest
conserving heat in a tundra
avoiding insects in a prairie
collecting water in a desert
11
What could explain the reason for the snow melting on a compost pile?
Chemical energy is converted to heat by microorganisms
Microorganisms change chemical energy into solar energy
Compost absorbs more sunlight than grass
Microorganisms change the compost into salt melting the snow
12
In this pond ecosystem you would expect to find a greater variety of organisms at
B
A
C
D
13
Which of the following is the most basic explanation of the “cell theory”?
Every object in the universe is made of cells
All cells are identical
All living things are made of cells
Cells are made from atoms during chemical reactions
14
Protective safety equipment is tools that are used
To get good grades in your science lab
after an accident happens
to protect you from injury
To keep equipment from breaking
15
The jar of stones gets shaken every day for a year. What process does this illustration show?
chemical weathering
erosion
oxidation
abrasion
16
Which of the following in the box below are components of the cell theory?
II,III, V
I,II, III
I,III, V
II,III, IV
17
Which ecosystem would be more likely to survive if a disease killed the grasses?
Grassland ecosystem because of competition
The grassland ecosystem because of the herbivores
The forest ecosystem because of more resources
Neither one because all the animals would die
18
Which of the following situations is NOT an example of deposition?
C
A
B
D
19
In what part of the cell cycle does DNA line up and get pulled apart to separate into 2 cells?
mitosis
cytokinesis
interphase
cell cycle
20
What effect would a drought have on a wildebeest population?
They would become prey to the lions
They would produce larger herds
They would remain where they are and wait for rain
The wildebeest herd would have to migrate to find water
21
The steps used to solve problems and uncover facts is called
System Method
Testing Method
Scientific Method
Question Method
22
Which statement did Virchow contribute to the cell theory?
All cells arise from pre-existing cells
All cells can develop into any other type of cell
All cells have a cell wall
All cells are capable of photosynthesis
23
What would cause the biggest change in the amount of water available from groundwater?
long periods without rainfall
long periods of high temperatures
below-freezing temperatures for many consecutive days
non-porous rocks to store the water
24
Emergency lab equipment is tools that are used
if an accident happens
to use if you run out of lab materials
to prevent accidents
to prevent the teacher from having accidents
25
What would the volume of the liquid in the graduated cylinder be?
48 mL
49 mL
47 mL
46 mL
26
A cell has 12 chromosomes. How many chromosomes will each daughter cell have?
4
12
6
24
27
Over time, why does the number of pioneer species in a new ecosystem decrease?
The temperature is not as extreme
The area is more susceptible to the wind
The amount of available sunlight is reduced
The area has more soil, decreasing their role
28
Which consumers would receive the greatest amount of energy from the producers?
Woylies
Eucalyptus trees
Wedge-tailed eagles
Chuditch
29
How does a wide variety of species living in one ecosystem maintain a balance?
Each species fulfills a particular niche
Variety allows for competition for resources
Variety supports more abiotic factors
Variety increases the available space
30
What is the correct mass of the block of wood on the scale below?
208 g.
248 g.
240 g.
284 g.
