Suggest some approaches towards the conservation of forests.
Forest conservation approaches have been given:- In- Situ conservation approach have been given for the forest conservation in natural or artificial habitat under human control like National parks, Zoological parks, Botanical gardens, Wildlife Sanctuaries, Biosphere Reserves etc. Several national conservation programs are united with the international programs like UNESCO (United Nations Educational, Scientific and Cultural Organisation) and IUCN (International Union of Conservation of Nature and Natural Resources). In- Situ conservation is the appropriate method for the maintenance of plants and animals in their natural habitat or under the protected areas.
National park is the land reserved area and is maintained by the national government for the welfare of entire wildlife. Plantation, cultivation, grazing are not allowed. Total 103 national parks are present in India. India’s first national park was Jim Corbett National park made in 1936.
Wildlife sanctuary is an reserved area for animals only. Private ownership, minor forest products are allowed or provided that do not affect the animals. Total 548 wildlife sanctuaries are present in India.
Biosphere reserves are the specified area in which multiple use of land is permitted by dividing it into multiple zones, each zone is used for the particular activity like-
1. Core zone:- no human activity is allowed in this zone.
2. Buffer zone:- limited human activities are allowed in this zone.
3. Manipulation zone:- many human activities are allowed in this zone.
Biosphere reserves preserve wildlife population, genetic resources available of the plants and the animals.
Zoological parks or botanical garden have been made for preserving animals or plants respectively that are made for conservation of forest.
Find out about the traditional systems of water harvesting/management in your region.
We saw in this chapter that there are four main stakeholders when it comes to forests and wildlife. Which among these should have the authority to decide the management of forest produce? Why do you think so?
List five things you have done over the last one week to —
(a) conserve our natural resources.
(b) increase the pressure on our natural resources.
Find out the source of water in your region/locality. Is water from this source available to all people living in that area?
How can you as an individual contribute or make a difference to the management of (a) forests and wildlife, (b) water resources and (c) coal and petroleum?
Why should we conserve forests and wildlife?
Compare the above system with the probable systems in hilly/mountainous areas or plains or plateau regions.
Why do you think that there should be equitable distribution of resources? What forces would be working against an equitable distribution of our resources?
What changes can you make in your habits to become more environment-friendly?
What can you as an individual do to reduce your consumption of the various natural resources?
Did Döbereiner’s triads also exist in the columns of Newlands’ Octaves? Compare and find out.
What is a good source of energy?
Why is diffusion insufficient to meet the oxygen requirements of multi-cellular organisms like humans?
What are trophic levels? Give an example of a food chain and state the different trophic levels in it.
What is the difference between a reflex action and walking?
What is the importance of DNA copying in reproduction?
If a trait A exists in 10% of a population of an asexually reproducing species and a trait B exists in 60% of the same population, which trait is likely to have arisen earlier?
Why should a magnesium ribbon be cleared before burning in air?
Define the principal focus of a concave mirror.
You have been provided with three test tubes. One of them contains distilled water and the other two contain an acidic solution and a basic solution, respectively. If you are given only red litmus paper, how will you identify the contents of each test tube?
Hydrogen has been used as a rocket fuel. Would you consider it a cleaner fuel than CNG? Why or why not?
If you could use any source of energy for heating your food, which one would you use and why?
What are the limitations of the energy that can be obtained from the oceans?
Which of the following is not an example of a bio-mass energy source?
(a) wood (b) gobar-gas
(c) nuclear energy (d) coal
A piece of wire of resistance R is cut into five equal parts. These parts are then connected in parallel. If the equivalent resistance of this combination is R′, then the ratio R/R′ is –
(a) 1/25 (b) 1/5 (c) 5 (d) 25
Equal lengths of magnesium ribbons are taken in test tubes A and B. Hydrochloric acid (HCl) is added to test tube A, while acetic acid (CH3COOH) is added to test tube B. Amount and concentration taken for both the acids are same. In which test tube will the fizzing occur more vigorously and why?
When a 12 V battery is connected across an unknown resistor, there is a current of 2.5 mA in the circuit. Find the value of the resistance of the resistor.
How is the small intestine designed to absorb digested food?
What advantage over an aquatic organism does a terrestrial organism have with regard to obtaining oxygen for respiration?
Define the principal focus of a concave mirror.