Plant cell diagram

What this diagram shows

Plant cells share four key parts with animal cells, the cell membrane, cytoplasm, nucleus and mitochondria, and add three of their own: a cell wall, a large permanent vacuole and chloroplasts. This diagram shows all seven. In Explore, tapping a part gives its name and one fact. Labels names every part on the picture. Quiz me asks the student to find each part in turn and gives a score at the end of the round.

• Cell wall: a strong layer made of cellulose that supports the cell and gives it a fixed, often boxy, shape.
• Vacuole: a large space filled with cell sap that presses outward and keeps the cell firm.
• Chloroplasts: contain green chlorophyll, which absorbs light for photosynthesis.
• Shared parts: the membrane controls what enters and leaves, the cytoplasm is where reactions happen, the nucleus holds DNA and mitochondria release energy by respiration.

Common misconceptions

The most common error is thinking plant cells do not have mitochondria because they have chloroplasts instead. Plants photosynthesize to make glucose, but they still need to release energy from that glucose, so they respire all the time, day and night, just as animals do. Plant cells have both chloroplasts and mitochondria.

Other mix-ups: students sometimes think the cell wall replaces the membrane (a plant cell has both, with the membrane just inside the wall), or that every plant cell has chloroplasts. Root cells grow underground with no light, so they have no chloroplasts. A useful habit is to ask "which part of the plant did this cell come from?" before naming its parts.

Where this fits in school

• England, Key Stage 3 (Years 7 to 9): pupils learn the functions of the cell wall, cell membrane, cytoplasm, nucleus, vacuole, mitochondria and chloroplasts, and the similarities and differences between plant and animal cells.
• England, GCSE (Years 10 and 11): students build on this with specialized cells, microscopy and photosynthesis in more depth.
• US, grades 6 to 8: NGSS MS-LS1-2 asks students to model how the parts of a cell, including the cell wall and chloroplasts, contribute to its function. MS-LS1-6 links photosynthesis to the cycling of matter.
• US, high school biology: students return to plant cells when studying photosynthesis and cellular respiration together.

A 10-minute plant cell activity

• If the student has used the animal cell diagram, ask them to predict which parts a plant cell will add.
• In Explore, tap each of the seven parts. Pause on the chloroplasts and mitochondria and ask how they work as a pair.
• Turn on Labels and have the student draw a quick two-column table: in both cells, plant cells only.
• Ask: "Why do plants need a cell wall when animals do not?" Lead toward support, since plants have no skeleton.
• Finish with a Quiz me round.

With a microscope, a thin layer of onion skin stained with iodine shows cell walls and nuclei clearly. Onion bulb cells have no chloroplasts, because the bulb grows underground. A leaf of pondweed, if available, shows the green chloroplasts.

Learning more

Science is part of Eurekami's skill map, with lessons that draw science diagrams live and narrate them in English or Spanish. For older students, Exam Prep includes GCSE Combined Science practice papers.