Plant cells and animal cells: how they are alike and different
Grade 7 Science Worksheet
Circle the best answer.
It has no chloroplasts. Ari reads a cell card. Which conclusion is right?
- An animal cell, because it has no chloroplasts
- A plant cell, but it cannot release energy from sugar without chloroplasts
- A plant cell, because it has a cell wall and a large central vacuole
- An animal cell, because roots grow underground
Bo reads a cell card. Which conclusion is right?
- An animal cell, because it has a membrane but no wall or chloroplasts
- A plant cell, because it has mitochondria to use energy
- Not a cell, because it has no cell wall
- A plant cell, because its membrane is a thin cell wall
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.
Jun’s teacher shows a prepared slide through a microscope. Why are no green parts seen?
- The thick cell walls block the green color
- Onion skin cells are animal cells
- These bulb cells get no light, so they have no chloroplasts
- The stain hides the chloroplasts from view under the microscope
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.
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 a flexible membrane and no stiff cell wall
- They have a soft cell wall that bends
- They have no edge around the cytoplasm
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 membrane and the cytoplasm
- The cell walls, which replace the membranes
“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
Noah drew an animal cell and left out one part. Which part is missing?
- A cell wall around the outside
- Chloroplasts
- A nucleus
- A stiff wall to hold its shape
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
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. Note: the pond water holds a living thing made of just one cell.
Tala’s class reads about a pond water sample. Which statement fits cell theory?
- It is alive, but it is not made of cells
- It is alive, and its one cell does all of its life processes
- It formed from pond water and mud
- It is too small to be alive, so it is not considered a living thing
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.
Zee reads that a tadpole grows into a frog with many more cells. Where did the extra cells come from?
- From its food turning straight into new cells
- Frogs are made of cells, but tadpoles are not
- From the pond water it swims in
- From its existing cells dividing again and again