Methodical recommendation:
Theory
| Number | Name | Description |
|---|---|---|
| 1. | Microorganisms – The invisible living world | This topic explains that microorganisms are microscopic living entities found everywhere and may be unicellular, multicellular, or acellular. They play vital roles such as decomposition, food production, oxygen generation, and environmental balance. |
Practice Questions
| Number | Name | Type | Difficulty | Marks | Description |
|---|---|---|---|---|---|
| 1. | Yeast Fermentation | Other | medium | 2 m. | This multiple choice based question explains how yeast converts sugars into alcohol and carbon dioxide under anaerobic conditions, a process used in baking and brewing. |
| 2. | Nitrogen Fixation | Other | medium | 5 m. | This question explains how certain bacteria convert atmospheric nitrogen into usable forms for plants, improving soil fertility. |
| 3. | Manures | Other | medium | 3 m. | This exercise explains organic substances formed by decomposition of plant and animal waste that enrich soil nutrients and structure. |
| 4. | Identify the Micro-organisms | Other | easy | 2 m. | An exercise explains identifying microbes based on their shape, habitat, and characteristics using a microscope. |
| 5. | Microbial growth conditions | Other | easy | 1 m. | A multiple choice question exercise explains the factors like temperature, moisture, nutrients, and oxygen that influence the growth of microorganisms. |
| 6. | Bread mould and food spoilage | Other | hard | 4 m. | This exercise explains how fungi such as bread mould grow on food, causing spoilage under warm and moist conditions. |
| 7. | Curd | Other | hard | 1 m. | Assertion and reasoning type of exercise emphasises the role of Lactobacillus bacteria in converting milk into curd through fermentation. |
| 8. | Lime water experiment | Other | medium | 3 m. | This question highlights how carbon dioxide turns lime water milky, demonstrating gas release during respiration or fermentation. |
| 9. | Biogas production | Other | easy | 1 m. | A multiple choice question which emphasises the breakdown of organic waste by microorganisms in anaerobic conditions to produce methane-rich biogas. |
| 10. | Microorganisms types on pond and soil | Other | medium | 2 m. | This question describes the variety of microorganisms like bacteria, algae, protozoa, and fungi found in pond water and soil. |