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The diagram shows a laboratory microscope - Junior Cycle Science - Question (b) - 2006
Question (b)
The diagram shows a laboratory microscope. (i) What are the functions of parts labelled A and B? Function of A: Function of B: (ii) Onion epidermis is a tissue ... show full transcript
Worked Solution & Example Answer:The diagram shows a laboratory microscope - Junior Cycle Science - Question (b) - 2006
Step 1
What are the functions of parts labelled A and B?
Answer
Function of A: The part labelled A is the objective lens, which is used to magnify (enlarge) the view of the specimen being observed.
Function of B: The part labelled B is the stage, which holds (supports) the slide (specimen) in place for observation.
Step 2
Describe how to prepare a microscope slide from a plant tissue.
Answer
To prepare a microscope slide from onion epidermis tissue:
- Use a clean microscope slide and place a small piece of the onion epidermis on it.
- Add a drop of water or iodine solution onto the tissue to help stain it for better visibility.
- Carefully place a coverslip over the tissue at one edge, allowing it to gently fall to avoid air bubbles.
Step 3