Table of Contents
- Time Limit: 15 minutes is the time limit to complete the quiz.
- Multiple Choice: Each question have multiple answer choices.
- One Correct Answer: Only one answer choice is correct for each question.
- No Negative Marking: There is no penalty for incorrect answers.
Class 9 Chemistry Chapter 5 The Fundamental Unit Of Life Quiz Questions
Welcome to the Class 9 Chemistry Chapter 5: The Fundamental Unit of Life Quiz – 2. This free online quizzes focuses on testing your understanding of cells, the basic building blocks of all living organisms. From cell structure to its functions, this quiz will help you review the key concepts covered in Chapter 5. The questions are designed to reinforce your knowledge of topics like cell theory, organelles, and the differences between plant and animal cells. Sharpen your skills and test your knowledge with these engaging questions.
Class 9 Science Chapter 5 The Fundamental Unit Of Life Quiz 2
Question: Is it true that prokaryotic cells are larger and more complex than eukaryotic cells?
- Option 1: True
- Option 2: False
Answer:
Option 2
Explanation: Eukaryotic cells are generally larger and more complex than prokaryotic cells. Eukaryotic cells have a defined nucleus and membrane-bound organelles, while prokaryotic cells lack a defined nucleus and membrane-bound organelles. Prokaryotic cells are typically smaller and simpler in structure than eukaryotic cells. This fundamental difference in cell structure is one of the main distinctions between the two types of cells.
Explanation: Prokaryotic cells are generally smaller and simpler in structure compared to eukaryotic cells.
Question: Is it true that the cell is a Latin word for ‘little room’?
- Option 1: True
- Option 2: False
Answer:
Option 1
Explanation: The word “cell” is derived from the Latin word i.e. ‘cellus’, which means “little space or room”. It was first discovered by Robert Hooke in 1665 while working on a slice of cork.
Also Read: Class 9 Science Chapter 5 The Fundamental Unit Of Life Quiz 1
Question: Who proposed the principle that all cells arise from pre-existing cells?
- Robert Hooke
- Anton van Leeuwenhoek
- Rudolf Virchow
- Matthias Schleiden
Answer:
Rudolf Virchow
Explanation: The principle that all cells arise from pre-existing cells was proposed by Rudolf Virchow in 1855. This principle, also known as the “Cell Proliferation” principle, builds upon the earlier cell theory stating that all living organisms are made up of cells and that the cell is the basic unit of life.
The cell proliferation principle adds that new cells are formed by the division and differentiation of pre-existing cells. This principle was a significant contribution to the cell theory and is considered one of the cornerstones of modern cell biology.
Question: The Chlamydomonas cell is ______ in shape?
- Long
- Circular
- Oval
- Bi – concave
Answer:
Oval
Explanation: Chlamydomonas is an aquatic single-celled organism. It has an oval shape body structure
Question: All cells arise from pre-existing cells was stated by?
- Haeckel
- Virchow
- Hooke
- Schleiden
Answer:
Virchow
Explanation: All cell arises from pre-existing cells or omnis cellula-e-cellula. This was stated by Rudolph Virchow
Question: Which of the following statement does not belong to cell theory?
- Plasma membrane is selectively permeable membrane.
- All living organisms are composed of cell and cell products.
- All cells arise from pre-existing cells.
- Both B and C
Answer:
Correct option is A
Explanation: Cell theory is a scientific theory which states that:
- Living organisms are made up of cells
- Cells are the basic structural/ organizational unit of all organisms
- All cells come from pre-existing cells.
Question: Which of the following instrument is used to observe cells?
- Electron microscope
- Compound microscope
- Simple microscope
- Convex lens
Answer:
Correct option is A
Explanation:
- Electron microscope is used to observe the detailed structure of the nucleus.
- It uses lens or combination of lenses to produce a magnified image of tiny objects, which are not visible to the naked eyes.
- Cells are very small, which cannot be seen by the naked eyes and hence, a microscope is used to observe cells.
Question: Schleiden and Schwann propounded theory known as?
- Cell theory
- Atomic theory
- Both A and B
- None of the above
Answer:
Correct option is C
Explanation:
- Cell Theory states that all plants and animals are composed of cells, which serve as the structural and functional units and all the cells arise from pre-existing cells.
- This was propounded by Matthias Schleiden a German botanist, and Theodor Schwann a zoologist in 1839 later on Rudolf Virchow added to this in 1858.
Question: In organisms, a single cell performs all the functions of life?
- Unicellular
- Multicellular
- Both A & B
- None of these
Answer:
Correct option is A
Explanation: The organism which has only one cell is called unicellular organisms. The organism with more than one cell are called as multicellular organism.
Question: Cover slip is put on the mounted material on a slide very gently to?
Answer:
Correct option is C
Explanation: Cover slip is put on the mounted material on a slide very gently to avoid entry of air bubbles.
Question: Name the stain which is commonly used to study plant cells
Answer:
Correct option is C
Explanation: Safranin is the stain commonly used to study about plant cells. (histology & cytology)
Question: To observe cells in an onion peel, we must prepare the slide by mounting on it
Answer:
Correct option is D
Explanation: To observe cells in an onion peel, we must prepare the slide by mounting thin layer of fleshy onion.
Question: Glycerine is used to prepare a temporary mount of a tissue due to the following reason
Answer:
Correct option is B
Explanation: Glycerin is used to prepare a temporary mount of a tissue to avoid drying up of the specimen quickly. Coverslip is placed to avoid air bubbles. Dyes are used to color the specimen
