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HIA International — Grade 6

Unit 1: Cells and organisms

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Unit 2: States of matter, atoms and compounds

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Unit 3: The Solar System and energy

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Unit 4: Living organisms and classification

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Unit 5: Metals, non-metals, acids and alkalis

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Unit 6: Sound, the Earth and eclipses

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Unit 7: Microorganisms and food webs

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Unit 8: Chemical reactions

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Unit 9: Electricity and circuits

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Quiz

Checkpoint Grade 6 Unit 1 – 1.1 Plant Cells

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Plant Cells Checkpoint Biology quiz: free practice for Cambridge Checkpoint Biology 0893. Work through this Plant Cells Checkpoint Biology quiz and get instant feedback on every answer. If you get stuck, review the 1.1 Plant cells lesson. More practice: Cambridge Checkpoint Biology 0893 — all units. Syllabus: Cambridge Lower Secondary programme.

  • Questions count: 49
  • Passing grade: B+
  • Time limit:
Start Quiz
1.
Which statement best expresses the lesson objective about Plant cells?
Name the structures in a plant cell and describe their functions
The terms cell and cell membrane are always interchangeable
Evidence is unnecessary when studying Plant cells
Every model is an exact copy of reality
2.
Which practical work belongs to Plant Cells?
Compare root hair, sperm, red blood, ciliated and nerve cells using structure–function reasoning
Relate the hierarchy cell → tissue → organ → organ system using plant and human examples
Use a stain and microscope to improve visibility of cell structures
Prepare a slide of onion epidermis, use a microscope safely, and compare a model with a real cell
3.
Which statement correctly describes cell wall?
the large sac of cell sap in a plant cell that helps keep it firm
the rigid outer layer of a plant cell, made of cellulose, that supports the cell
the thin layer just inside the cell wall that controls what enters and leaves the cell
the jelly-like substance where most chemical reactions of the cell happen
4.
The diagram shows a leaf cell with six parts labelled A to F. Which letter labels the part that controls which substances enter and leave the cell?
Dr Dabour Hub Academy - figure 1
Letter A
Letter B
Letter C
Letter F
5.
Cells X and Y in the diagram were both taken from one bean plant. Which is the best conclusion about where cell Y came from?
Dr Dabour Hub Academy - figure 2
A leaf in sunlight, because it has a cell wall and a vacuole
An animal that ate the plant, because it has no chloroplasts
The root, where no light reaches, so it has no chloroplasts
The top of a leaf, because its vacuole is the largest part
6.
Tomasz counted chloroplasts in cells from four parts of a sunflower plant. His results are in the bar chart. Which explanation best fits the pattern?
Dr Dabour Hub Academy - figure 3
Cells that receive more light contain more chloroplasts
Cells lower down the plant need more food so they have fewer chloroplasts
Root cells have no chloroplasts because they have no cell wall
Chloroplasts are made in the root and then move up to the leaves
7.
Aisha stopped watering a basil plant on day 0 and measured how high its shoot tip stood above the soil each day. The graph shows her results. Which explanation fits the results after day 2?
Dr Dabour Hub Academy - figure 4
The cell walls dissolved without water, then new walls formed after watering
The chloroplasts stopped working in the dark soil, then restarted after watering
The sap vacuoles lost water so the cells became less firm, then refilled after watering
The nuclei died from lack of water, then new nuclei grew after watering
8.
Jamal prepared a slide of onion epidermis stained with iodine. His view is shown in the diagram. The large round shape with a very thick black edge is not a cell. Which mistake in his method most likely caused it?
Dr Dabour Hub Academy - figure 5
He added iodine, which made the nucleus look much too large
He dropped the coverslip flat instead of lowering it at an angle
He started with the lowest-power objective lens
He peeled a layer of epidermis that was only one cell thick
9.
Group 3 built the model plant cell shown, with a key to their materials. Which important part of a real plant cell have they left out?
Dr Dabour Hub Academy - figure 6
The cell wall, which supports the cell
The chloroplasts, which trap light
The cytoplasm, where reactions happen
The nucleus, which controls the cell
10.
A teacher showed Leo four cells under a microscope and recorded which parts could be seen. Three are plant cells. Which cell is NOT a plant cell?
It is cell P
It is cell Q
It is cell R
It is cell S
11.
Four groups made onion epidermis slides and looked at them at ×100. Their methods and observations are shown. Which conclusion is best supported by these results?
Iodine stain makes the nucleus visible in onion cells
Onion cells have no nucleus unless iodine is added
Water alone shows the nucleus as clearly as iodine does
A thicker layer of epidermis shows the nucleus more clearly
12.
Ruby made a table comparing the cell wall and the cell membrane. One row contains a mistake. Which row is wrong?
The "Found in" row
The "Made of" row
The "Feel" row
The "Position" row
13.
Omar wrote clues for three mystery parts of a plant cell, X, Y and Z. Which part is Y?
Cytoplasm
Cell membrane
Sap vacuole
Chloroplast
14.
When Kofi starts looking at a new slide, his teacher tells him to use the lowest-power objective lens first. What is the main reason?
It gives the highest total magnification of all the lenses
It is the only lens that lets light pass through the slide
It shows a wide area, so the cells are easy to find and focus on
It stops the iodine stain from drying out on the slide
15.
Grace peels a layer of epidermis from an onion to make a slide. Why must the layer be very thin?
A thin layer contains more chloroplasts to look at
Thick layers of onion are too acidic to put under a coverslip
Only a thin layer of onion cells has a nucleus
Light must pass through it, so cells should be one layer thick
16.
Karim wrote in his notes: "Chloroplasts make energy for the cell." Which is the best correction?
Chloroplasts store energy in the cell sap for later
Chloroplasts absorb light energy to make food by photosynthesis
Chloroplasts make energy, but only at night
The nucleus makes energy and the chloroplasts store it
17.
Which part of a plant cell is usually hard to see with a school microscope, appearing at most as a thin line because it lies pressed against the inside of the cell wall?
The sap vacuole
The nucleus
The cell membrane
The cell wall itself
18.
In which part of a plant cell is energy released from food?
In the cell wall
In the mitochondria
In the sap vacuole
In the chloroplasts
19.
Zara looked at onion bulb cells and saw no chloroplasts. She concluded: "Onions are not plants." Which is the best evaluation of her conclusion?
Correct – every plant cell must contain chloroplasts
Correct – onion cells have no nucleus either
Wrong – the chloroplasts were removed by the iodine stain
Wrong – the cells have walls and vacuoles; onion bulbs get no light
20.
Each option pairs a part of a plant cell with a job. Which pairing is correct?
Cell wall – controls what enters and leaves the cell
Nucleus – traps light so the plant can make food
Mitochondrion – where energy is released from food
Chloroplast – stores cell sap to keep the cell firm
21.
Nadia's class is choosing everyday materials for a model leaf cell. Which material would best represent the structure named, for the reason given? Which pairing is correct?
Thin plastic bag – cell membrane, as it is thin and flexible
Green peas – nucleus, as the nucleus is green
Stiff box – cytoplasm, as cytoplasm is stiff
Purple grape – chloroplast, as it is round
22.
Imagine a leaf cell that lacked one structure. Think about the result of losing it. Which pairing is correct?
Cell wall – nothing could get into the cell
Chloroplast – the plant could not make its food
Sap vacuole – the cell could not be controlled
Nucleus – the leaf would become stiffer
23.
Ines drew a cheek cell she saw with a microscope and measured her drawing, as shown in the diagram. What is the magnification of her drawing?
Dr Dabour Hub Academy - figure 7
×80 magnification
×800 magnification
×2.88 magnification
×0.00125 magnification
24.
Five students measured the length of the same cheek cell in their drawings, all made at the same magnification. Which result is anomalous, and what is the mean of the other four?
Student E; mean of all five is 33.6 mm
Student B; mean of the rest is 34.5 mm
Student E; mean of the rest is 30 mm
No result is anomalous; mean is 33.6 mm
25.
Mira measured three cells in photos taken at different magnifications. Which cell has the largest real length?
The egg cell, about 0.1 mm long
The red blood cell, as it looks 35 mm long
The sperm cell, about 0.6 mm long
The red blood cell, about 0.07 mm long
26.
Viewing a prepared slide of airway lining at low power, Elif can see the cells but not their cilia. What should she do next?
Turn to the smallest objective lens
Add more mucus to the slide
Look at the slide without the microscope
Turn to a larger objective lens and refocus
27.
Which term is described as: the part of the cell that controls its activities and contains the genetic material?
vacuole
nucleus
cell
cell wall
28.
Match the term to its correct meaning: chlorophyll
the rigid outer layer of a plant cell, made of cellulose, that supports the cell
the part of the cell that controls its activities and contains the genetic material
the green structure containing chlorophyll where photosynthesis takes place
the green pigment that absorbs light energy for photosynthesis
29.
Match the term to its correct meaning: vacuole
the rigid outer layer of a plant cell, made of cellulose, that supports the cell
the smallest unit of a living organism
the large sac of cell sap in a plant cell that helps keep it firm
the green structure containing chlorophyll where photosynthesis takes place
30.
Which term is described as: how many times larger a microscope makes an object appear?
stain
coverslip
magnification
animal cell
31.
The green pigment that absorbs light energy is _____.
cytoplasm
cellulose
chlorophyll
cell sap
32.
The chemical reactions that keep a cell alive take place in the jelly-like _____.
cell wall of the cell
cytoplasm of the cell
cellulose of the cell
chlorophyll of the cell
33.
A microscope is used to _____ cells, making the view look much bigger than they really are.
stain the
dissolve the
count only the
magnify the
34.
A cell from deep inside a potato has a cell wall and a large vacuole, but it has no _____ because no light reaches it.
chloroplasts at all
nucleus at all
cytoplasm at all
cell membrane at all
35.
The large vacuole in a plant cell is filled with cell sap. - True or false?
True
False
36.
The cell membrane controls what enters and leaves the cell. - True or false?
True
False
37.
Chloroplasts contain chlorophyll and carry out photosynthesis. - True or false?
True
False
38.
In a plant cell, the cell wall lies just inside the cell membrane. True or false?
True – the statement is correct
False – the wall is the outer layer
True, but only in leaf cells
True, but only in root cells
39.
Any cell that has a cell wall must be able to make food by photosynthesis. True or false?
True – the statement is correct
True, because cellulose makes food
False – root cells have walls but no chloroplasts
True, but only in the daytime
40.
Iodine solution is added to onion epidermis on a slide so that the nucleus can be seen more clearly. True or false?
False – the statement is wrong
False – iodine is added to kill the cells
False – iodine makes the chloroplasts green
True – the statement is correct
41.
Cells from a thin moss leaf can be seen clearly without a stain because their chloroplasts are green. True or false?
True – the statement is correct
False – the statement is wrong
False – all cells need iodine to be seen
False – moss leaves have no chloroplasts
42.
Ben labelled his drawing of a leaf cell. Next to the outer stiff layer he wrote "decides which substances pass in or out", and next to the thin inner layer he wrote "keeps the shape". Ben's labels are correct. True or false?
True – the statement is correct
True, but only in leaf cells
False – Ben has swapped the two jobs
True, but only for water
43.
If the cell membrane of a leaf cell were damaged, the cell wall would still stop sugars from leaking out of the cell. True or false?
True – the statement is correct
True, because cellulose is waterproof
True, but only while it is light
False – the wall lets substances pass freely
44.
The walls of plant cells are made of a substance called cellulose. True or false?
True – the statement is correct
False – the statement is wrong
False – they are made of chlorophyll
False – they are made of cell sap
45.
Mitochondria are found in plant cells as well as in animal cells. True or false?
False – the statement is wrong
True – the statement is correct
False – plants use chloroplasts instead
False – only root cells have them
46.
Palisade cells just below the upper surface of a leaf contain many chloroplasts because this is where they receive the most light. True or false?
False – the statement is wrong
False – they get the least light
True – the statement is correct
False – palisade cells have no chloroplasts
47.
A model plant cell that uses a bag of water for the vacuole shows exactly how a real vacuole works, so the model has no limitations. True or false?
True – the statement is correct
True, as long as the bag is large
True, if the water is coloured green
False – every model has limitations
48.
If you hold a thin piece of onion skin up to the light, you can see its separate cells clearly with your eyes alone. True or false?
False – cells are too small to see
True – the statement is correct
True, but only if iodine is added
True, because onion cells are huge
49.
To compare the real sizes of two cells from their drawings, you need to know the magnification of each drawing. True or false?
False – the bigger drawing is always the bigger cell
False – only the eyepiece lens needs to be known
True – real size = drawing size ÷ magnification
True, but only when both cells are the same type
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Part of Unit 1: Cells and organisms — see every lesson and quiz in this unit.
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