Chapter 16 Environmental Issues Question 1. What are the various constituents of domestic sewage ? Discuss the effects of sewage discharge on a river. Solution: The domestic sewage contains every-thing that goes down the drain into the sewer of the house. The various...
Chapter 15 Biodiversity and Conservation Question 1. Name the three important components of biodiversity Solution: The three important components of biodiversity are genetic diversity, species diversity and ecological diversity. These components are the basic building...
Chapter 14 Ecosystem Question 1. Fill in the blanks (a) Plants are called as ___ because they fix carbon dioxide. (b) In an ecosystem dominated by trees, the pyramid (of numbers) is ___ type. (c) In aquatic ecosystem, the limiting factor for the productivity is ___...
Chapter 13 Organisms and Populations Question 1. How is diapause different from hibernation ? Solution: Diapause is different from hibernation. The table below shows the differences between them : Question 2. If a marine fish is placed in a freshwater aquarium/will...
Chapter 12 Biotechnology and Its Applications Question 1. Crystals of Bt toxin produced by some bacteria do not kill the bacteria themselves because (a) bacteria are resistant to the toxin (b) toxin is immature (c) toxin is inactive (d) bacteria encloses toxin in a...
