Biology
Chapter-1
Life's Mysteries in Little chambers -
1- Write the different parts of Microscope.
2. What is the use of Stain & glycerin while preparing observation Materials ?
3. Write the Name of 2 Scientist & their discovery related to cell biology.
4. Write cell theroy, 5 Write any 3 cell organell es & its functions.
6. Write a note about prokaryotes & Eukaryotes with examples
7. What is plastids?
8. What is chromo Plast s ? give examples
9 What is the reason for the colour and taste of fruits change when they ripen ?
10 - Draw the plant cell & labell a) Nucleus b) vacuole
c) chloroplast
Answers
Answer:
1) Eyepiece – also known as the ocular. ...
Eyepiece tube – its the eyepiece holder. ...
Objective lenses – These are the major lenses used for specimen visualization. ...
Nose piece – also known as the revolving turret. ...
The Adjustment knobs – These are knobs that are used to focus the microscope.
2) Glycerin prevents the drying up of specimen and also helps in getting a clear picture under the microscopic lens. Apart from that, Glycerin also protects the specimen from dust and damage along with preserving the cellular characteristics of the specimen as well as the quality of the stain.
3) Credit for developing cell theory is usually given to two scientists: Theodor Schwann and Matthias Jakob Schleiden. While Rudolf Virchow contributed to the theory, he is not as credited for his attributions toward it.
4) The plastid is a membrane-bound organelle found in the cells of plants, algae, and some other eukaryotic organisms. They are considered to be intracellular endosymbiotic Cyanobacteria. Examples include chloroplasts, chromoplasts, and leucoplasts.