Plant cells and animal cells: how they are alike and different

Grade 7 Science Worksheet

Circle the best answer.

1. 1.

   It has no chloroplasts. Ari reads a cell card. Which conclusion is right?

   • A plant cell, because it has a cell wall and a large central vacuole
   • A plant cell, but it cannot release energy from sugar without chloroplasts
   • An animal cell, because roots grow underground
   • An animal cell, because it has no chloroplasts
2. 2.

   Bo reads a cell card. Which conclusion is right?

   • An animal cell, because it has a membrane but no wall or chloroplasts
   • Not a cell, because it has no cell wall
   • A plant cell, because it has mitochondria to use energy
   • A plant cell, because its membrane is a thin cell wall
3. 3.

   Esme reads a cell card. Which conclusion is right?

   • A plant cell, because it has a cell wall and chloroplasts
   • Hard to say, because moss has no flowers
   • A plant cell, because it has a cell wall instead of a membrane
   • An animal cell, because it has mitochondria

4. Read this first

   Microscope card (read about; the teacher prepared the slide)

   Onion skin, stained. Boxy cells in neat rows, a thick line around each cell, one dark dot in each cell, no green parts. Not to scale.

5. 4.

   Jun’s teacher shows a prepared slide through a microscope. Why are no green parts seen?

   • These bulb cells get no light, so they have no chloroplasts
   • Onion skin cells are animal cells
   • The thick cell walls block the green color
   • The stain hides the chloroplasts from view under the microscope

6. Microscope card (read about; the teacher prepared the slide)

   Cheek cells, stained blue. Flat cells with uneven, rounded edges, one dark dot in each cell, no thick outer line. Not to scale.

7. 5.

   Kira’s teacher shows a prepared slide through a microscope. Why do these cells have uneven, rounded shapes?

   • They are not true cells, because they have no cell wall
   • They have no edge around the cytoplasm
   • They have a flexible membrane and no stiff cell wall
   • They have a soft cell wall that bends
8. 6.

   Microscope card (read about; the teacher prepared the slide): a leaf of a water plant. Not to scale. Luz’s teacher shows a prepared slide through a microscope. Which two parts seen here show these are plant cells?

   • The cell walls and the chloroplasts
   • The mitochondria and the nucleus
   • The cell walls, which replace the membranes
   • The cell membrane and the cytoplasm
9. 7.

   “Student drawing of a leaf cell, not to scale, with each part named:” Milo drew a typical leaf cell and left out one part. Which part is missing?

   • A second cell wall inside the membrane
   • Mitochondria
   • Nothing: plant cells have no mitochondria
   • Nothing: the chloroplasts handle the cell’s energy
10. 8.

    Noah drew an animal cell and left out one part. Which part is missing?

    • Chloroplasts
    • A stiff wall to hold its shape
    • A cell wall around the outside
    • A nucleus
11. 9.

    Cell wall, cytoplasm, nucleus, mitochondria, chloroplasts, large central vacuole. Pia drew a typical leaf cell and left out one part. Which part is missing?

    • A second nucleus
    • Nothing: the cell wall does the membrane’s job
    • A cell membrane just inside the cell wall
    • Nothing: membranes belong in animal cells, not plant cells

12. Cell theory card

    (1) All living things are made of one or more cells. (2) The cell is the basic living unit. (3) New cells come only from cells that already exist.

13. 10.

    Zee reads that a tadpole grows into a frog with many more cells. Where did the extra cells come from?

    • Frogs are made of cells, but tadpoles are not
    • From its existing cells dividing again and again
    • From its food turning straight into new cells
    • From the pond water it swims in