Read and download NCERT Class 9 Science Lab The World of Living in NCERT book for Class 9 Science. You can download latest NCERT eBooks chapter wise in PDF format free from Studiestoday.com. This Science textbook for Class 9 is designed by NCERT and is very useful for students. Please also refer to the NCERT solutions for Class 9 Science to understand the answers of the exercise questions given at the end of this chapter
NCERT Book for Class 9 Science Lab The World Of Living
Class 9 Science students should refer to the following NCERT Book Lab The World Of Living in Class 9. This NCERT Book for Class 9 Science will be very useful for exams and help you to score good marks
Lab The World Of Living NCERT Book Class 9
The World of Living
AIM
To prepare a stained, temporary mount of onion peel and to study its cells.
THEORY
All living organisms are composed of cells. New cells arise by the division of pre-existing cells. Cell is the structural and functional unit of life. In plants, cells have an outermost rigid cell wall beneath which is a cell membrane. The cell membrane encloses cytoplasm, cell organelles, and a nucleus.
MATERIALS REQUIRED
An onion bulb, slides, cover slips, two watch glasses, needle, brush, forceps, razor blade, compound microscope, blotting paper, methylene blue (or safranin) solution, glycerine, and water.
PROCEDURE
1. Take one fleshy scale leaf of an onion. Break it into two and using a forcep pull out a thin membranous peel adhering to the inner surface of the leaf. This is the epidermal peel.
2. Place the peel in a watch glass containing water and cut it into small rectangular pieces.
3. Mix 1 or 2 drops of methylene blue or safrarin in a small quantity of water taken in another watch glass and transfer the peels into it. Leave the peels for about 3 minutes. Dip the peel in water to remove excess stain.
4. Take a clean slide with a drop of glycerine in the middle and using a brush transfer the washed and stained peel on to it.
5. Place a cover slip over it by slowly lowering it with a needle. Avoid entry of air bubbles.
6. Remove excess glycerine from the edges of cover slip with the help of a piece of blotting paper.
7. Observe the slide under the microscope, first in low power and then in high power.
8. Draw a labelled diagram of the cells as seen under microscope.
9. Note the features listed in the observation table.
RESULTS AND DISCUSSION
The cells that form the peel are rectangular in shape, compactly arranged and without any intercellular spaces. Each cell has a distinct cell wall, a prominent nucleus and a vacuole. The cells form the outer layer of the leaf known as epidermis.
PRECAUTIONS
• Staining of the peel must be appropriate. Excess stain can be removed by rinsing the peel with water taken in a watch glass.
• Use a brush to transfer the peel on to the slide.
• While placing the cover slip care should be taken to avoid air bubbles.
Please refer to attached file for NCERT Class 9 Science Lab The World of Living
| NCERT Class 9 Science Matter In Our Surroundings |
| NCERT Class 9 Science Matter In Our Surroundings Questions |
| NCERT Class 9 Science Is Matter Around Us Pure |
| NCERT Class 9 Science Is Matter Around Us Pure Questions |
| NCERT Class 9 Science Atoms And Molecules |
| NCERT Class 9 Science Atoms And Molecules Questions |
| NCERT Class 9 Science Structure Of The Atom |
| NCERT Class 9 Science Structure Of The Atom Questions |
| NCERT Class 9 Science The Fundamental Unit Of Life |
| NCERT Class 9 Science The Fundamental Unit Of Life Questions |
| NCERT Class 9 Science Tissues |
| NCERT Class 9 Science Tissues Questions |
| NCERT Class 9 Science Diversity In Living Organisms |
| NCERT Class 9 Science Diversity In Living Organisms Questions |
| NCERT Class 9 Science Motion |
| NCERT Class 9 Science Motion Questions |
| NCERT Class 9 Science Force And Laws Of Motion |
| NCERT Class 9 Science Force And Laws Of Motion Questions |
| NCERT Class 9 Science Gravitation |
| NCERT Class 9 Science Gravitation Questions |
| NCERT Class 9 Science Work And Energy |
| NCERT Class 9 Science Work And Energy Questions |
| NCERT Class 9 Science Sound |
| NCERT Class 9 Science Sound Questions |
| NCERT Class 9 Science Why Do We Fall Ill |
| NCERT Class 9 Science Why Do We Fall Ill Questions |
| NCERT Class 9 Science Natural Resources |
| NCERT Class 9 Science Natural Resources Questions |
| NCERT Class 9 Science Improvement In Food Resources |
| NCERT Class 9 Science Improvement In Food Resources Questions |
| NCERT Class 9 Science Solutions and Answers |
Science NCERT Book Class 9 Lab The World Of Living
The above NCERT Books for Class 9 Science Lab The World Of Living have been published by NCERT for latest academic session. The textbook by NCERT for Lab The World Of Living Science Class 9 is being used by various schools and almost all education boards in India. Teachers have always recommended students to refer to Lab The World Of Living NCERT etextbooks as the exams for Class 9 Science are always asked as per the syllabus defined in these ebooks. These Class 9 Lab The World Of Living book for Science also includes collection of question. We have also provided NCERT solutions for Class 9 Science which have been developed by teachers of StudiesToday.com after thorough review of the latest book and based on pattern of questions in upcoming exams for Class 9 students.
NCERT Book Class 9 Science Lab The World Of Living
The latest NCERT book for Lab The World Of Living pdf have been published by NCERT based on the latest research done for each topic which has to be taught to students in all classes. The books for Class 9 Science Lab The World Of Living are designed to enhance the overall understanding of students. All Class 9 NCERT textbooks have been written in an easy to understand language which will help to enhance the overall level of Class 9 students.
Lab The World Of Living NCERT Book Class 9 Science
As the students of Class 9 need the books for their regular studies, we have provided all NCERT book for Lab The World Of Living in pdf here for free download. All pdf NCERT books available here for Class 9 will help them to read on their mobile or computers. They can take a print of the Class 9 Science NCERT Book Lab The World Of Living pdf easily and use them for studies. The NCERT textbooks for Class 9 Science have been provided chapter-wise and can be downloaded for free of cost.
Class 9 Science Lab The World Of Living NCERT Book
Along with Science Class 9 NCERT Book in Pdf for Lab The World Of Living we have provided all NCERT Books in English Medium for Class 9 which will be really helpful for students who have opted for english language as a medium. Class 9 students will need their books in English so we have provided them here for all subjects in Class 9.
Class 9 Lab The World Of Living NCERT Book Science
For Class 9 Lab The World Of Living we have provided books for students who have opted for Hindi and Urdu medium too. You can click on the links provided above to download all Hindi medium Class 9 Science Lab The World Of Living book in easy to read pdf format. These books will help Class 9 Science students to understand all topics and also strictly follow latest syllabus for their studies. If you are looking to download the pdf version of Class 9 Science Lab The World Of Living textbook issued by NCERT then you have come to the correct website
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