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HIA International — Grade 8

Unit 1: Photosynthesis and the carbon cycle

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Unit 2: Properties of materials

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Unit 3: Forces and energy

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Unit 4: Maintaining life

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Unit 5: Reactivity

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Unit 6: Sound and space

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Unit 7: Genes and inheritance

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Unit 8: Rates of reaction

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Unit 9: Electricity

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Quiz

GRADE 8 – Unit 4: Maintaining life – Unit review (50 questions)

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  • Questions count: 50
  • Passing grade: B+
  • Time limit:
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1.
Which statement correctly describes nutrition?
chemical reactions that release energy in cells
producing new organisms
taking in or making nutrients
a permanent increase in size or dry mass
2.
Which statement correctly describes virus?
the protein coat of a virus
a cell used by a virus to replicate
make copies
a non-cellular infectious particle
3.
Which statement correctly describes species?
produce offspring
able to reproduce
a group able to reproduce and produce fertile offspring
new organisms produced by parents
4.
Which statement correctly describes branching key?
a key that gives two choices at each step
an individual living thing
an identification route displayed as branches
a structured set of choices used to name an organism
5.
Which statement correctly describes branching key?
a key that gives two choices at each step
the process of determining what an organism is
an identification route displayed as branches
an observable characteristic
6.
How does water enter a root hair cell?
By respiration
By combustion
By photosynthesis
By osmosis
7.
Where does most transpiration take place?
Through the bark
Through the stomata on the leaf
Through the roots
Through the flowers
8.
Which organ makes urea?
The kidney
The liver
The lung
The bladder
9.
What is the job of the placenta?
To make the baby's blood
To exchange substances between mother and fetus
To store food only
To protect the fetus from knocks
10.
What is the job of the xylem?
To carry sugar down the plant
To carry water up the plant
To make food
To absorb light
11.
Which conditions give the fastest transpiration?
Cold and wet
Warm, windy, bright and dry
Cool, still, dark and humid
Dark and humid
12.
Why is passing out faeces not excretion?
It contains no water
The food was never made by the body's reactions
It leaves too slowly
It is solid
13.
Why should a pregnant woman avoid alcohol?
It makes her hungry
It has no energy
It crosses the placenta and can damage the fetus
It thins the amniotic fluid
14.
Which statement correctly describes respiration?
taking in or making nutrients
producing new organisms
chemical reactions that release energy in cells
a permanent increase in size or dry mass
15.
Which statement correctly describes capsid?
a non-cellular infectious particle
make copies
the protein coat of a virus
a cell used by a virus to replicate
16.
Which statement correctly describes reproduce?
a group able to reproduce and produce fertile offspring
able to reproduce
produce offspring
new organisms produced by parents
17.
Which statement correctly describes dichotomous key?
an identification route displayed as branches
an individual living thing
a key that gives two choices at each step
a structured set of choices used to name an organism
18.
Which statement correctly describes dichotomous key?
an identification route displayed as branches
the process of determining what an organism is
a key that gives two choices at each step
an observable characteristic
19.
Why does a plant wilt?
It loses water faster than it absorbs it
It stops respiring
It is too cold
It has too much water
20.
What do guard cells do?
Absorb minerals
Carry water upwards
Open and close the stomata
Make all the food
21.
Which waste do the lungs excrete?
Undigested food
Carbon dioxide
Salts
Urea
22.
Which substance passes from the fetus to the mother?
Amino acids
Carbon dioxide
Oxygen
Glucose
23.
Which term is described as: one of the seven activities carried out by all living organisms?
life process
anaerobic respiration
aerobic respiration
sexual reproduction
24.
Which term is described as: a particle of genetic material in a protein coat that reproduces only inside a host cell?
virus
genetic material
protein coat
epidemic
25.
Which term is described as: the sorting of organisms into groups based on shared characteristics?
classification
fungi kingdom
animal kingdom
vertebrate group
26.
Which term is described as: a key in which every step offers exactly two alternatives?
dichotomous key
qualitative feature
quantitative feature
route
27.
Which term is described as: designing a key that separates a set of organisms one by one?
key construction
branching diagram
numbered pair
balanced split
28.
Which term is described as: taking in or making nutrients?
respiration
reproduction
nutrition
growth
29.
Which term is described as: a non-cellular infectious particle?
capsid
replicate
virus
host cell
30.
Which term is described as: a group able to reproduce and produce fertile offspring?
reproduce
fertile
species
offspring
31.
Which term is described as: an identification route displayed as branches?
dichotomous key
organism
branching key
identification key
32.
Which term is described as: an identification route displayed as branches?
dichotomous key
identification
branching key
feature
33.
Match the term to its correct meaning: life process
one of the seven activities carried out by all living organisms
a change in the surroundings that an organism can detect
the change in an organism caused by a stimulus
the release of energy from glucose using oxygen, producing carbon dioxide and water
34.
Which term is described as: chemical reactions that release energy in cells?
nutrition
reproduction
respiration
growth
35.
Match the term to its correct meaning: virus
a particle of genetic material in a protein coat that reproduces only inside a host cell
the organism whose cells a virus invades
the passing of a virus from one person to another
the outer covering of a virus that protects its genetic material
36.
Which term is described as: the protein coat of a virus?
virus
host cell
replicate
capsid
37.
Match the term to its correct meaning: classification
the sorting of organisms into groups based on shared characteristics
the naming system giving each species a genus name and a species name
one of the largest groups organisms are sorted into
an invertebrate with a hard outer skeleton and jointed legs
38.
Which term is described as: produce offspring?
species
fertile
reproduce
offspring
39.
Match the term to its correct meaning: dichotomous key
a key in which every step offers exactly two alternatives
a feature given as a number, such as 'six legs'
having more than one possible meaning, which makes a key step unreliable
a feature described in words, such as 'has wings'
40.
Which term is described as: a key that gives two choices at each step?
branching key
organism
dichotomous key
identification key
41.
Respiration that uses oxygen is called _____.
aquatic
atomic
anaerobic
aerobic
42.
The outer covering of a virus is a _____ coat.
starch
cellulose
fat
protein
43.
The largest group organisms are sorted into is a _____.
genus
family
species
kingdom
44.
Every step of a dichotomous key offers _____ alternatives.
four
five
three
two
45.
A good first question makes a _____ split.
single
final
random
balanced
46.
Aerobic respiration uses oxygen and produces carbon dioxide and water. - True or false?
True
False
47.
A virus is genetic material inside a protein coat. - True or false?
True
False
48.
Classification sorts organisms into groups by shared characteristics. - True or false?
True
False
49.
Every step of a dichotomous key offers exactly two alternatives. - True or false?
True
False
50.
A good first question splits the organisms into two groups of similar size. - True or false?
True
False
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Part of Unit 4: Maintaining life — see every lesson and quiz in this unit.
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