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Class 9 Cell: The Building Block of Life worksheet
CBSE Science. Cell organelles, plant and animal cells, osmosis, microscope magnification, cell division. Every sheet has 20 questions in three sections and an answer key, and the numbers change every time.
Sample questions
Real questions from this chapter, as the app sets them. Tap Answer to see the answer and working.
Section A · multiple choice
- 1.
Which part of the cell controls what enters and leaves the cell?
- The lysosome
- The rough endoplasmic reticulum
- The leucoplast
- The cell membrane
Answer
(d) The cell membrane
- 2.
An animal cell whose contents have 3% salt is placed in a solution with 13% salt. What happens to the cell?
- It swells as water enters
- It stays the same size
- It shrinks as water leaves
- It takes in salt and doubles in size
Answer
(c) It shrinks as water leaves
the outside solution is hypertonic (more concentrated)
- 3.
Cells were first seen and named by:
- Purkinje, in 1839
- Robert Brown, in 1831
- Virchow, in 1855
- Robert Hooke, in 1665
Answer
(d) Robert Hooke, in 1665
he saw them in a thin slice of cork
Section B · short answer
- 4.
Name the cell part that carries ribosomes and transports proteins within the cell.
Answer
The rough endoplasmic reticulum
- 5.
An animal cell with 8% sugar in its sap is placed in a 20% sugar solution. Which way does water move? Is the outside solution hypotonic or hypertonic? What happens to the cell?
Answer
Water moves out of the cell; the solution is hypertonic; the cell shrinks.
water moves from the dilute to the concentrated side
Section C · long answer
- 6.
Compare a plant cell and an animal cell.
Answer
Plant cells have a cell wall of cellulose, plastids (including chloroplasts) and a large central vacuole; they are usually larger and more regular in shape. Animal cells have no cell wall or plastids, and have small vacuoles. Both have a cell membrane, nucleus, cytoplasm, mitochondria, ribosomes, ER and Golgi apparatus.
Fresh sheets for your child
In the app, every Cell: The Building Block of Life sheet is new: the app remembers the questions your child has already had and leaves them out. Print the sheet as a PDF, or use notebook mode and write the answers in a notebook.
Coming soon for Android and iPhone.