Class 5th Science (Chapter 1) Plants: Increasing the numbers

The lesson is taken from class 5th Science book 'Living Science'.
Entire chapter is covered in this ppt. This ppt will supplement the students' learning.

1. CLASS 5TH SCIENCE CHAPTER-1 Plants: Increasing the Numbers By Anamika Mishra (PRT) Social Studies

2. New Plants from Seeds Why does a plant produce seeds?

3. A seed and its parts Seeds of plants like grams, peas and beans have two seed leaves and are called dicot seeds. Seeds of some plants like maize, wheat and rice have one seed leaf and are called monocot seeds.

4. Seed Germination Conditions necessary for seed germination- Water (Moisture) Warmth (Sunlight) Air (Oxygen)

5. Dispersal of Seeds Seed dispersal is the movement, spread or transport of seeds away from the parent plant. https://media.tenor.com/images/44e7b46ca50b2d6f200c5f3f5c67b248/tenor.gif

6. Agents of dispersal Dispersal is carried out by the wind, water, animals and by explosion of fruits. Wind Water

7. Animals Explosion

8. New plants from other parts of plants New plants also grow from certain other parts such as roots, stem and leaves of the parent plant .

9. New plants growing from stem cuttings. Hibiscus Rose Bougainvillea From my Garden!

10. Oral Questions The development of a seed into a seedling is called hibernation / budding / germination. Air / Moisture / Seed, water and warmth are necessary for germination of a seed. Seeds of cotton are dispersed by water / wind / explosion. Some plants like roses grow from root / leaf / stem cuttings. Choose the correct answer.

11. Crops and Vegetables

12. Plants of one kind grown in a particular area or region during a particular period are called crops. Crops grown from November to April are called rabi crops or winter crops. Examples: Wheat, gram. Crops grown from June to October are called kharif crops or monsoon crops. Examples: Rice, maize jowar and bajra.

13. Soil and crops R ice and Jute Wheat, Jowar and Bajra Cotton

14. Tea plants need moist soil and grow on the slopes of hilly areas like Assam and Darjeeling. Coconut trees grow in coastal areas like Kerala and Goa . Maize grows well in the dry soil of the plains or hills . Onion and groundnut need well-drained, sandy soil.

15. Agriculture The practice of growing plants on a large scale is called agriculture . Manure is added to increase production. Fertilizers like urea, super, sulphate etc. is added to the soil. However, overuse of fertilizers can be harmful for the soil as well as the crops.

16. For a good and healthy crop, we must- Use healthy and ripe seeds for sowing. Prepare the soil properly. Add manure or fertilizers to the soil. Irrigate the soil. Use insecticides and pesticides.

17. Protection of crops and storage of seeds We need to protect our crops against Grazing animals like cows and goats, Pests such as grasshoppers, caterpillars Diseases After harvesting, grains need to be stored in sealed containers , protected against moisture. They have to be kept safe from rats, moles, birds etc.