Separation of healthy seeds of wheat from unhealthy seeds can be done bya)waterb)using threshingc)putting seeds in waterd)winnowingCorrect answer is option 'C'. Can you explain this answer?

Question

Answer

Separation of Healthy Seeds of Wheat from Unhealthy Seeds
Separating healthy seeds of wheat from unhealthy seeds is crucial for ensuring a successful crop. One effective method of doing this is by putting the seeds in water. Here's how this process works:

Process of Separation
- First, a batch of wheat seeds is collected, which may contain a mix of healthy and unhealthy seeds.
- These seeds are then placed in a container filled with water.
- Healthy seeds are denser and will sink to the bottom of the container, while unhealthy seeds are lighter and may float on the surface.
- By carefully observing the seeds in water, it is possible to separate the healthy seeds that have sunk to the bottom from the unhealthy seeds that are floating.

Advantages of Using Water for Separation
- Simple and cost-effective method: Using water for separating seeds does not require any specialized equipment and can be easily done with basic materials.
- Non-invasive process: The seeds are not damaged during the separation process, ensuring that only viable seeds are used for planting.
- Efficient separation: Water helps in quickly identifying and separating healthy seeds from unhealthy ones based on their density.

Conclusion
By putting the seeds in water, farmers can effectively separate healthy seeds of wheat from unhealthy seeds, ensuring a higher quality crop and better yield. This method is simple, efficient, and cost-effective, making it a popular choice among farmers for seed separation.

Answer

Correct option is 'C'.....

Explanation-) Immersing the seeds in water separates the damaged seeds from the healthy ones as the damaged seeds floats on the surface of water, whereas the healthy seeds will settle down on the bottom..
Hope this may help you...

Answer

Separation of healthy seeds of wheat from unhealthy seeds can be done by:

1. Water method:

- Soak the mixed seeds in water.
- The healthy seeds will sink to the bottom, while the unhealthy seeds will float on the surface.
- Skim off the floating seeds to separate the unhealthy ones from the healthy ones.

2. Threshing method:

- Threshing is the process of separating grains from the chaff or husks.
- In this method, the mixed seeds are beaten or pounded to remove the husks.
- The healthy seeds will remain intact, while the unhealthy ones may break or get damaged during the threshing process.

3. Winnowing method:

- Winnowing involves the separation of grains from lighter materials like chaff, dust, or straw.
- The mixed seeds are tossed into the air using a winnowing basket or a shallow tray.
- The wind or a gentle breeze helps in carrying away the lighter materials, while the healthy seeds fall back into the tray, allowing for their separation from the unhealthy seeds.
By using these methods, the healthy seeds of wheat can be effectively separated from the unhealthy ones, ensuring the quality of the harvested seeds for further use.

Top Courses for Class 8View all

Science Class 8

Mathematics (Maths) Class 8

Social Studies (SST) Class 8

English Class 8

Cursive Writing Course-Improve Your Handwriting

Top Courses for Class 8

Top Courses for Class 8

Suggested Free Tests

Related Content

Class 8 Study Material

Class 8 Subjects

Competitive Examinations for Class 8

NCERT Solutions

Reference Books for Class 8

Other Popular Exams

Company