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?
- A plant cell, because it has a cell wall and a large central vacuole
- An animal cell, because it has no chloroplasts
- An animal cell, because roots grow underground
- A plant cell, but it cannot release energy from sugar without chloroplasts
Bo reads a cell card. Which conclusion is right?
- A plant cell, because it has mitochondria to use energy
- Not a cell, because it has no cell wall
- An animal cell, because it has a membrane but no wall or chloroplasts
- A plant cell, because its membrane is a thin cell wall
Read this first
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 have no edge around the cytoplasm
- They are not true cells, because they have no cell wall
- They have a soft cell wall that bends
- They have a flexible membrane and no stiff cell wall
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
“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?
- Nothing: plant cells have no mitochondria
- Nothing: the chloroplasts handle the cell’s energy
- A second cell wall inside the membrane
- Mitochondria
Noah drew an animal cell and left out one part. Which part is missing?
- A nucleus
- A cell wall around the outside
- A stiff wall to hold its shape
- Chloroplasts
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 cell membrane just inside the cell wall
- Nothing: membranes belong in animal cells, not plant cells
- A second nucleus
- Nothing: the cell wall does the membrane’s job
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. Growth table (example data): Day 1, root 2 cm; Day 3, root 4 cm; Day 5, root 7 cm.
Ren measures a bean seedling’s root, which grows longer each day. Where do the new root cells come from?
- The old cells stretch longer; no new cells form
- The soil turns into new root cells
- Water in the root turns into cells
- Existing root cells divide to make new ones
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 formed from pond water and mud
- It is alive, but it is not made of cells
- It is alive, and its one cell does all of its life processes
- 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
- From its existing cells dividing again and again
- From the pond water it swims in
- Frogs are made of cells, but tadpoles are not