Lakhmir Singh and Manjit Kaur Solutions for Chapter: Our Environment, Exercise 10: Questions Based on High Order Thinking Skills (HOTS)

A food chain consists of fish, larvae, phytoplankton, and birds. The level of pesticides in water in which the fish, larvae, and phytoplankton live is quite high.

Which organism will have the maximum amount of pesticides accumulated through the food chain? What is this process known as?

A food chain consists of fish, larvae, phytoplankton and birds. The level of pesticides in water, the number of fish, larvae and phytoplankton are quite high.

Write the food chain comprising all the organisms mentioned above.

A food chain consists of fish, larvae, phytoplankton and birds. The level of pesticides in water in which the fish, larvae and phytoplankton live is quite high. Which other organism you could write in place of a bird in the above food chain? (Zooplankton/Pupa/Man)

Every household produces a lot of material A daily. In one of the methods of disposal B, material A is burned at a very high temperature of about 1000⁰C in a structure called C. During this process, the organic matter present is removed as D and E whereas F is left behind (which can be dumped in a landfill site).
What is material A, whether garbage or sewage?

Every household produces a lot of material A daily. In one of the methods of disposal B, material A is burned at a very high temperature of about 1000°C in a structure called C. During this process, the organic matter present is removed as D and E whereas F is left behind (which can be dumped in a landfill site).
Name the method of disposal B. (Incineration/ Chlorination)

Every household produces a lot of material A daily. In one of the methods of disposal B, material A is burned at a very high temperature of about 1000⁰C in a structure called C. During this process, the organic matter present is removed as D and E whereas F is left behind (which can be dumped in a landfill site).
What is structure C known as?

Every household produces a lot of material 'A' daily. In one of the methods of disposal 'B', material 'A' is burned at a very high temperature of about 1000°C in a structure called 'C'. During this process, the organic matter present is removed as 'D' and 'E' whereas 'F' is left behind (which can be dumped in a landfill site).

What are (i) D (ii) E, and (iii) F?

Every household produces a lot of material A daily. In one of the methods of disposal B, material A is burned at a very high temperature of about 1000°C in a structure called C. During this process, the organic matter present is removed as D and E whereas F is left behind (which can be dumped in a landfill site). This method is especially suitable for the disposal of materials produced by certain institutions. Name one such institution where we generally go for medical and surgical treatment.