Wild buffalo is an endangered species because
A. its population is diminishing
B. it has become extinct
C. it is found exclusively in a particular area
D. its poaching is strictly prohibited
Animals whose numbers are diminishing to a level that they might face extinction are called endangered animals and wild buffalo is an example of an endangered species.
Which one of the following changes may occur due to desertification?
A. The decrease in atmospheric temperature.
B. Increase in water holding a capacity of the soil.
C. Increased chances of floods.
D. Conversion of fertile land into a desert.
Desertification is the process of conversion of fertile land into desert as continuous soil erosion can convert fertile land into desert.
Which one of the following statements is true about a Biosphere Reserve?
A. It is a protected area where only endemic species live.
B. It is meant only for the conservation of plants and animals.
C. It is meant to conserve both, the biodiversity and the culture of that area.
D. There are no other protected areas within its limits.
Biosphere reserve is a large protected area of land meant for the conservation of wildlife, biodiversity and traditional lifestyle of the tribal people living in the area.
The place meant for conservation of biodiversity in their natural habitat are
(i) Zoological garden
(iii) Wildlife sanctuary
(ii) Botanical garden
(iv) National park
A. i & ii;
B. ii & iii;
C. iii & iv;
D. i & iv
Conservation of wildlife in their own natural environment like forests is called wildlife sanctuary. The national park is an area reserved for wildlife where they can freely use the habitats and natural resources.
Which one of the following statements is true about endemic species?
A. They are found exclusively in a specific habitat.
B. Endemic species can never become endangered.
C. They are found only in zoos and botanical gardens.
D. They are not affected by the destruction of their habitat.
Endemic species are the species of plants and animals which are found exclusively in a particular area.
Which of the following feature is correct for a wildlife sanctuary?
A. It is an artificially created protected area for animals.
B. It is a protected area for threatened and endangered wild animals.
C. It is meant for conservation of only plant species.
D. Capturing and poaching of animals is strictly prohibited here.
A wildlife sanctuary is a protected area for animals in their natural environment like forests where killing and capturing of wild animals is strictly prohibited.
Which statement is incorrect about endangered species?
A. Their number has decreased drastically.
B. They might become extinct in the near future.
C. They pose a danger to other animals.
D. Their natural habitat needs to be protected.
Endangered animals are diminishing to a level that they might become extinct in the near future so their habitat needs to be protected. These animals are in more danger of getting extinct but they don’t pose any danger to other animals.
What do black buck, elephant, python and golden cat together represent in a forest?
A. fauna
B. flora
C. ecosystem
D. species
The animals belong to a particular area represents fauna of that area. So black buck, elephant, python, golden cat are fauna of the forest.
The Red Data Book keeps a record of all the
(i) endemic species.
(ii) extinct species.
(iii) endangered plants.
(iv) endangered animals.
A. i & ii;
B. ii & iii;
C. iii & iv;
D. i & iv
Red Data Book contains list of species of endangered plants and animals.
Migratory birds fly to far away areas during a particular time of a year. Which of the following conditions present in their habitat during that time are responsible for this behaviour?
(i) Unavailability of food.
(ii) Extreme weather conditions.
(iii) Over crowding.
(iv) Lack of nesting areas.
A. ii & iii;
B. i & ii;
C. i & iv
D. ii & iv
Migration of birds occurs due to extreme weather conditions and unavailability of food in their area so to escape from these conditions they move from one place to another.
In our country, large patches of forests are being cleared for cultivation of crops. The environmental impact of such a practice will lead to
A. soil erosion
B. soil conservation
C. soil pollution
D. soil fertility
The roots of trees hold soil firmly and prevent the soil from getting eroded but forests are cleared in large patches for the cultivation of crops which will cause soil erosion.
Why is it important to conserve forests?
Forests are one of our important natural resources that maintain the balance of our ecosystem. They give us many valuable products like medicines, gum, resins etc. They release oxygen into our atmosphere thus purifying air and oxygen is a life-supporting gas. They help in bringing rainfall so it is very necessary to conserve forests.
Mention any one action that you have undertaken to conserve trees.
I have planted some trees and have taken utmost care for their growth which is an important action to conserve trees. Using recycled paper or notebooks which is an important step towards conservation of trees.
State whether the following statements are True or False. Correct the false statements.
(i) There can be a wildlife sanctuary within a biosphere reserve.
(ii) Plants of a particular area are collectively termed as fauna.
(iii) Deforestation leads to an increase in the water holding capacity of the soil.
(iv) Bison is an endemic fauna of Pachmarhi Biosphere Reserve.
i. True
The biosphere reserve is a large protected area of land meant for conservation of wildlife, biodiversity and wildlife sanctuary is a protected area for animals in their natural environment. So a Biosphere reserve can consist of wildlife sanctuaries within it.
ii. False
Plants of a particular area are collectively termed as flora.
iii. False
Deforestation leads to decrease in water holding capacity of soil which causes floods.
iv. True
Bison is an endemic fauna of Panchmarhi Biosphere reserve.
Can a forest regenerate naturally in a short period of time?
Reforestation can take place naturally by leaving the deforested area undisturbed for a long period of time and forests can regenerate naturally without the interference of human beings.
Name the first Reserve Forest of India.
Satpura National park is the first reserve forest of India which belongs to Panchmarhi Biosphere Reserve.
Why are wildlife sanctuaries important for the conservation of plants and animals?
A wildlife sanctuary is a protected area for animals in their natural habitat where there is no disturbance to animals and their habitat. Activities like plantation, cultivation, grazing, cutting of trees, hunting, poaching etc. are prohibited in these areas. It does not allow any human activity that disturbs wild animals or their habitats. So wildlife sanctuaries are important for the conservation of plants and animals.
Why are endemic organisms in greater danger of becoming extinct?
Endemic organisms are found exclusively in particular area and are not naturally found anywhere else and there is a maximum chance of becoming extinct of these species. Various factors like the destruction of their habitat, increasing population, the introduction of new species can affect their natural habitat causing their extinction as they cannot adapt or live outside of their natural habitat.
How are even small animals important in an ecosystem?
Small animals may be small in size but they are an important part of an ecosystem as they form a part of the food chain or food web.
A new species X is introduced in a forest. How is it likely to affect the local species of that area?
The new species will affect the local species in the following ways:
a. There may be competition between them for food, shelter.
b. They may prey on the local species.
c. May Prevents local species for reproduction.
d. May be change in food chain or food web.
Does soil erosion affect the fertility of soil? How?
Yes, soil erosion affects the fertility of the soil as in erosion process the top fertile layer of soil is removed by various agents like wind, water etc. The lower layers are mainly rocky layers which are less fertile as compared to the top layer.
What is the unique feature of the biodiversity found in Panchmarhi Biosphere Reserve?
The biodiversity found in Panchmarhi Biosphere reserve is similar to those of the upper Himalayan peaks and to those belonging to the lower Western Ghats.
Mention the aim of Forest (Conservation) Act.
FOREST Conservation Act was enforced in the year 1980. Its main aim is to preserve and conserve natural forests which meet the basic needs of people living in or nearby the forests.
What is biodiversity?
Biodiversity refers to the variety of organisms existing on the earth their inter-relationships and relationships with the environment.
Is deforestation associated with global warming? Explain.
Trees use carbon dioxide gas to prepare their food by the process of photosynthesis. Deforestation leads to the loss of many trees as a result very less number of trees would use up the carbon dioxide gas hence the amount of this gas will go on increasing as compared to its consumption. As carbon dioxide gas is a greenhouse gas it will trap the heat rays of the sun and will increase the temperature of the surface of the earth. This phenomenon is known as global warming where the overall temperature of the earth’s surface is increased due to an increased level of greenhouse gases in the atmosphere.
How does deforestation lead to frequent floods and droughts?
Roots of trees in forests help in absorbing rain water which then percolates into the ground but due to deforestation water holding capacity is reduced. Movement of water from the soil surface to the ground is reduced. This results in floods as excess water will flow from banks of rivers into surrounding areas. Trees bring rainfall as they release a lot of water vapours into the atmosphere by transpiration process but due to deforestation rainfall are scanty which may lead to drought conditions.
Why should we save paper?
Papers are made from wood pulp produced from wood of trees so a large number of trees are being cut down to be used in making paper by the paper industry. This is the major cause of deforestation which leads to serious environmental issues. 17 full grown trees are needed to make one-tonne paper so in this process, many forests are cleared. So we should save paper to save the felling of trees.