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Seeds Video Lecture | Crash Course for Class 6

FAQs on Seeds Video Lecture - Crash Course for Class 6

1. What are the different types of seeds?
Ans. Seeds can be classified into various types based on different criteria. The main types are: 1. <b>Dicot seeds</b> - These seeds have two cotyledons (seed leaves), such as beans and peas. 2. <b>Monocot seeds</b> - These seeds have one cotyledon, like corn and rice. 3. <b>Gymnosperm seeds</b> - Seeds that are not enclosed in an ovary, such as pine cones. 4. <b>Angiosperm seeds</b> - Enclosed seeds found in fruits, like apples and tomatoes.
2. How do seeds germinate?
Ans. Seed germination is the process where a seed develops into a new plant. It typically involves several stages: 1. <b>Imbibition</b> - The seed absorbs water and swells. 2. <b>Activation</b> - Enzymes become active, and the seed starts to metabolize stored food. 3. <b>Radicle emergence</b> - The primary root (radicle) breaks through the seed coat, followed by the shoot (plumule) emerging above the soil.
3. Why are seeds important for plants and humans?
Ans. Seeds play a crucial role in the life cycle of plants as they are responsible for reproduction. They ensure the survival of plant species by enabling them to spread and grow in different environments. For humans, seeds are vital as they provide food (grains, nuts, fruits), contribute to agriculture, and support biodiversity.
4. What conditions are necessary for seed germination?
Ans. For seeds to germinate successfully, they need specific conditions: 1. <b>Water</b> - Essential for hydration and metabolic processes. 2. <b>Temperature</b> - Each seed has an optimum temperature range for germination. 3. <b>Oxygen</b> - Necessary for respiration during the germination process. 4. <b>Light</b> - Some seeds require light, while others germinate better in darkness.
5. How can we store seeds properly?
Ans. Proper seed storage is important for maintaining their viability. Here are some tips for effective seed storage: 1. <b>Dryness</b> - Seeds should be dried before storage to prevent mold and decay. 2. <b>Cool temperature</b> - Store seeds in a cool place, ideally in a refrigerator, to prolong their lifespan. 3. <b>Sealed containers</b> - Use airtight containers to protect seeds from moisture and pests. 4. <b>Labeling</b> - Clearly label containers with the seed type and date of storage for easy identification.
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