CBSE Class 8 Science Chapter 1 Crop Management Activity Ideas
Activity 1
Aim: To separate good and healthy seeds of wheat from the damaged ones.
Materials Required: Seeds of wheat, a beaker, and water. Procedure
- Take a beaker and fill half of it with water.
- Now, put some seeds of wheat in it and stir it well.
- Let it rest for some time.
” Cbse Class 8 Science Chapter 1 Activities “
Observation After some time, we observe that most of the seeds will settle down, while some seeds will float on the top.
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Conclusion: From this activity, we can conclude that the seeds that settle down at the bottom of the beaker are heavy and healthy. The seeds that float on the top of the water are spoiled. These seeds may be damaged due to disease or eaten by pests, causing them to turn hollow and lightweight, allowing them to float on water
CBSE Class 8 Science Chapter 1 Crop Management Practical Activities
Activity 2
Aim: To show the effect of manure and fertiliser on the growth of a plant (using germinated gram seedlings).
” Crop Management Activities For Class 8 Cbse “
Materials Required: Pots, soil, cow dung manure, urea (chemical fertiliser), water, and germinated gram seedlings. Procedure
- Take three pots and mark them A, I, and C.
- In pot A, add some soil mixed with cow dung manure
- In pot 13, add soil mixed with urea (chemical fertiliser).
- In pot C, put some soil only.
- Pour an equal amount of water into each pot and plant the seedlings of gram (already germinated).
- Keep the pots in sunlight and water them daily, for 7-10 days
” Effect Of Manure And Fertiliser On Plant Growth “
” Cbse Class 8 Science Crop Management Practicals”
Observation: After 7-10 days, the growth of seedlings was observed. Plant in pot 13 shows maximum growth, followed by plant in pot A. Plant in pot C shows the least growth among the three.
” Seed Separation Activity For Class 8 “
Conclusion: From this activity, we can conclude that in the soil mixed with fertilisers, plants exhibit maximum growth. The fertilisers are more soluble in water and readily absorbed by plants as compared to manure. It also shows that manure and fertilisers are required for better growth of plants.