Collect information about seed mother Rahibai's stroy. How does she save over 80 varieties of native seeds ?

Collect information about various hybrid varieties of animals. What are their benefits? Make a presentation of various pictures and videos.

Collect information about GM varieties of crops in your area and make a note of them. Also find out if there are adverse effects of GM crops on human beings and environment.

Collect information about bimetallic strips and discuss in your class how a fire alarm is made using it .

Apollo astronauts who stepped on the moon have kept some large mirrors there . Collect information about how the distance to the moon is measured using these .

Radhika spends 60% of her monthly income of Rs 10,000. How much does she save in a month?

Role of Microbes as Biofertilizers : Collect information about : (ii) How is silk obtained and isolated

Read the following paragraph and answer the questions based on it. Rhizobium produce nitrogenous compounds from atmospheric nitrogen. However, for this process of nitrogen fixation, they need leguminous plants like beans, sweet pea, soyabean, etc. as ‘host’. Rhizobium living in root nodules supply nitrates, nitrites and amino acids to that plant and in exchange get energy in the form of carbohydrates from it. Such a mutually beneficial relationship is called symbiosis. Beans and pulses are rich in proteins due to the nitrogenous compounds made available by Rhizobium. After harvesting a leguminous crop, the left-over roots and other plant parts are deliberately dumped in farm soil to maintain its bacterial population. The use of Rhizobium has helped to reduce the use of chemical fertilizers and thereby their adverse effects. It has also helped to reduce expenses on fertilizers and thus works to the benefit of farmers. How does Rhizobium help to save money of the farmers?

Cellular respiration is the oxidation of foodstuffs for the production of energy. During aerobic respiration, complete oxidation of glucose takes place.Contradictor to this, glucose is incompletely oxidized durin anaerobic respiration . Many microbesare capacble of surviving anaerobically in environments that lack oxygen. Anaerobic respiration occurs via two steps,namely glycolysis and fermentation. The pyruvic acid formed during glycolysis is converted to organic acids or alcohols during anaerobic process. higher animals and plants, or seeds submerged in soil under water are capable ofperforming anaerobic respiration, when the oxygen levels are depleted .Even body cells like erythrocytes and mscle cells perform anaerobic respiration. How does anaerobic respiration occur in yeast?

Nina spends 90% of the money that she receives every month and she saves Rs 750. How much money does she get monthly ?