Class 8 Science

Virat

Asked: July 31, 2025In: Class 8 Science

Study the different parts of a macro fungus mushroom using a magnifying glass and microscope/foldscope. Take the help of students from senior classes and explore the internal structure of different parts of mushrooms under the microscope/foldscope in your school laboratory.

Use a magnifying glass or microscope to observe the mushroom’s cap, gills, stalk and spores. Ask help from seniors or teachers. Foldscope allows detailed study of internal cells and spore patterns. Class 8 Science Curiosity Textbook Chapter 2 The Invisible Living ...

Virat

Asked: July 31, 2025In: Class 8 Science

Fermented food items like fermented soybeans and fermented bamboo shoots are consumed as traditional food in some parts of India. With the help of your parents and teachers, list some traditional food items from your area that utilise the process of fermentation. Investigate the ingredients used in the preparation of these fermented food items; the method of preparing them; the microorganism responsible for the fermentation of the food and the cultural and nutritional importance of the fermented food.

Common fermented foods include idli, dosa, curd, pickles and bamboo shoots. They are rich in good bacteria, aid digestion and preserve food. Fermentation also enhances flavour, nutrition and shelf life. Class 8 Science Curiosity Textbook Chapter 2 The Invisible Living World ...

Virat

Asked: July 31, 2025In: Class 8 Science

India has a long history of biogas production. One of our oldest biogas plants was set up in the late 1850s. Find out about the Biogas Program initiated by the Ministry of New and Renewable Energy, Government of India.

The Biogas Program by the Ministry of New and Renewable Energy promotes biogas plants across India. It aims to convert organic waste into clean energy, reducing dependency on fossil fuels and promoting rural sustainability. Class 8 Science Curiosity Textbook Chapter 2 ...

Virat

Asked: July 31, 2025In: Class 8 Science

Observe the set-up given in Fig. 2.15 and answer the following questions: (i) What happens to the sugar solution in flask A? (ii) What do you observe in test tube B after four hours? Why do you think this happened? (iii) What would happen if yeast was not added in flask A?

(i) Sugar is fermented in flask A. (ii) Test tube B shows bubbles or gas due to carbon dioxide. (iii) Without yeast, fermentation doesn’t occur and no gas forms, so the test tube stays unchanged. class 8 science chapter 2 the ...

Virat

Asked: July 31, 2025In: Class 8 Science

A student observes that when curd is left out for a day, it becomes more sour. What can be two possible explanations for this observation?

Curd becomes sour because bacteria like Lactobacillus multiply in warm conditions, producing lactic acid. The acid gives curd its sour taste. Higher temperatures speed up this bacterial growth and souring process. class 8 science chapter 2 the invisible living world beyond ...

Category: Class 8 Science

Study the different parts of a macro fungus mushroom using a magnifying glass and microscope/foldscope. Take the help of students from senior classes and explore the internal structure of different parts of mushrooms under the microscope/foldscope in your school laboratory.

India has a long history of biogas production. One of our oldest biogas plants was set up in the late 1850s. Find out about the Biogas Program initiated by the Ministry of New and Renewable Energy, Government of India.

Observe the set-up given in Fig. 2.15 and answer the following questions: (i) What happens to the sugar solution in flask A? (ii) What do you observe in test tube B after four hours? Why do you think this happened? (iii) What would happen if yeast was not added in flask A?

A student observes that when curd is left out for a day, it becomes more sour. What can be two possible explanations for this observation?

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Category: Class 8 Science

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