Biology
Grade-8
Easy
Question
Across:
3. The dead remains of organisms is called ___________.
4. The conversion of nitrite to nitrate is done by _________ species.
5. The process of conversion of nitrogen present in nitrate back to atmospheric nitrogen.
Down:
1. By the process of _________ plants release oxygen into the atmosphere.
2. The element important in the formation of DNA, RNA and ATP.
- Across : 3 – Denitrification, 4 – Fossil fuel, 5 - Phosphorous
Down: 1 -Photosythesis ,2- Nitobacter
- Across : 3 –Fossil Fuel, 4 –Phosphorous, 5 - Denitrification
Down: 1 - Nitrobacter,2- Photosynthesis
- Across : 3 –Fossil fuel, 4 – Nitrobacter, 5 - Denitrification
Down: 1 - Photosynthesis ,2 - Phosphorous
- Across : 3 – Phosphorous, 4 – Phoyosynthesis, 5 - Nitobacter
Down: 1 – Fossil fuel ,2 – Denitrification
Hint:
Across : 3 –Fossil fuel, 4 – Nitrobacter, 5 - Denitrification
Down: 1 - Photosynthesis ,2 - Phosphorous
The correct answer is: Across : 3 –Fossil fuel, 4 – Nitrobacter, 5 - Denitrification
Down: 1 - Photosynthesis ,2 - Phosphorous
- Fossil fuel is formed by the dead remains of organisms.
- Photosynthesis is the process of making food by plants.
- Denitrification is the proces by which nitrates is changed to nitrogen gas by denitrifying bacteria.
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