CBSE Class 8 Science Cell Microorganisms Assignment Set A

CBSE Class 8 Science - Cell Microorganisms

Chapter wise assignments are being given by teachers to students to make them understand the chapter concepts. Its extremely critical for all CBSE students to practice all assignments which will help them in gaining better marks in examinations. All assignments available for free download on the website are developed by the best teachers having many years of teaching experience in CBSE schools all over the country. Students, teachers and parents are advised to download the CBSE study material.


Chapters – Cell, Microorganisms and Coal and Petroleum

(I) Choose the correct option:

(i) Which of the following is an antibiotic?

(a) sodium bicarbonate (b) streptomycin

(c) alcohol (d) yeast

(ii) The bread dough rises because of:

(a) heat (b) grinding

(c) growth of yeast cells (d) kneading

(iii) The major component of natural gas is:

(a) nitrogen (b) ethane

(c) water vapour (d) methane

(iv) Which of the following is a prokaryotic cell?

(a) bacteria (b) blue-green algae

(c) both of them (d) None of them

(II) Draw neat and labeled diagrams of:

(a) Cells of onion peel

(b) Cells of human cheek

(III) Give reasons for the following:

(a) We should use fossil fuels only when absolutely necessary.

(b) Viruses are said to lie on the border line dividing the living things from non-living


(IV) Value based:

(a) Amoeba is a single cell which can change its shape. A white blood cell present

in human blood is another example of a single cell which can also change its

shape. What is the difference between them?

(b) PCRA advises regular maintenance of the vehicle. How does it help in saving



(a) Explain the chemical change brought about by lactobacillus bacteria in changing

milk to curd.

(b) Explain how natural gas is utilized in manufacturing of fertilizers.

Please click the below link to access CBSE Class 8 Science - Cell Microorganisms



Click to View or Download pdf file
Click for more Science Study Material

Latest NCERT & CBSE News

Read the latest news and announcements from NCERT and CBSE below. Important updates relating to your studies which will help you to keep yourself updated with latest happenings in school level education. Keep yourself updated with all latest news and also read articles from teachers which will help you to improve your studies, increase motivation level and promote faster learning

Gandhiji Quiz by CBSE

CBSE has launched a Quiz on Mahatma Gandhi. The quiz portal can be accessed on Discover Gandhi portal at: DIKSHA platform ( and the Discover Gandhi mobile App which can be easily downloaded from Google Play Store on...

Online Teacher Training Course on Competency based Education in DIKSHA

Competency is a set of skills, abilities, knowledge that helps an individual perform a given task in real life. Every learning should go into the imbibing of these skills to lead a productive and joyful life. The NATIONAL EDUCATION POLICY-2020 calls for shift towards...

National Online Painting Championship

The National Mission for Clean Ganga, Ministry of Jal Shakti in collaboration with Kalantar Art Trust is organizing KALANTAR-2020: National Online Painting Championship with the aim to provide a platform to youth and school children to demonstrate their artistic skills...

Revised SOP preventive measures followed while conducting examinations

Revised SOP on preventive measures to be followed while conducting examinations to contain spread of COVID-19 issued by Ministry of Health & Family Welfare Examination centres are frequented by large number of students (as well as their parents) and staff till the...

Training of CBSE School Teachers on Olabs

Training of CBSE School Teachers on Olabs in collaboration with C-DAC Mumbai: OLabs is a platform jointly developed by the Ministry of Electronics and Telecommunications, Government of India, CDAC, and Amrita University to facilitate a virtual experience of CBSE...

Mathematical Literacy Free Practice Book for Students

With a larger goal to promote 21st century skills such as critical thinking and problem solving, the Central Board of Secondary Education has shared a Mathematical Literacy: Practice Book for Students. This Work Book is designed to allow learners of classes 7th to 10th...

Studies Today