intense revision plan
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As we promised through our post about revision plan we are starting the intense revision plan. We are trying to inculcate questions that can be asked in the prelims 2017. Every day there will be 15- 20 questions based on the plan provided earlier and Detailed answer key will be posted in the evening.

How it works?

You can get the plan and details of the intense revision from here. Please do provide some time to take a look at it.

Day 1 Ecology

1. Consider the statements regarding Habitat and Environment?

  1. A habitat always has life in it, whereas the environment does not necessarily have life in it.
  2. A habitat is always a preference of one species,
  3. Habitat refers to the unique functional role and position of a species in its ecosystem.

Select the correct answer using the codes given below

  1. 1 and 2
  2. 1 and 3
  3. 2 and 3
  4. 1, 2 and 3

2.Consider the following statements regarding diversity?

  1. Alpha diversity : diversity between ecosystems
  2. Beta diversity : the diversity within a particular area or ecosystem
  3. Gamma diversity:overall diversity for the different ecosystems within a region

Which of the above statements is/are correctly matched?

  1. 3 only
  2. 1 and 3
  3. 2 and 3
  4. 1, 2 and 3

3.Choose the incorrect pairs analysing their characteristic features and vegetation:

  1. Stilt roots : Desert vegetation
  2. Sloping Branches and needle like leaves : Tropical Rain Forests
  3. Waxy stem and thorns : Desert Vegetation
  4. Thick Canopy with strong undergrowth : Tropical Grassland

Select the correct answer using the codes given below.

  1. 3 only
  2. 1, 2 and 4
  3. 2, 3 and 4
  4. All the above

4.Which of the following statements is/are true regarding Ecotones?

  1. It is a zone of tension because it has conditions intermediate to the adjacent ecosystems.
  2. Edge effect can be observed in an ecotone.

Select the correct answer using the codes given below

  1. 1 only
  2. 2 only
  3. Both 1 and 2
  4. Neither 1 nor 2

5.Which of the following can be the characteristics of Succession?

  1. Decreased Productivity.
  2. The shift of nutrients from’ the reservoirs.
  3. A gradual increase in the complexity of food webs.

Select the correct answer using the codes given below

  1. 1 and 2
  2. 1 and 3
  3. 2 and 3
  4. 1, 2 and 3

6.Consider the following statements regarding Food Chains and Food Webs in a an ecosystem:

  1. A food chain illustrates the order in which a chain of organisms feed upon each other.
  2. Even if any of the intermediate food chain is removed, the succeeding links of the chain will not be affected largely.
  3. The food web provides only one alternative for food to most of the organisms.

Which among the above statements is/are true?

  1. 1 and 2
  2. 1 only
  3. 1 and 3
  4. 1, 2 and 3

7.Which of the following pyramids is/are always upright?

  1. Pyramid of Biomass
  2. Pyramid of numbers
  3. Pyramid of energy

Select the correct answer using the codes given below

  1. 3 only
  2. 1 and 3
  3. 2 and 3
  4. 1, 2 and 3

8.Consider the statements regarding Ecological Efficiency:

  1. It is the efficiency with which energy is transferred from one trophic level to the next.
  2. 10 percent laws is followed by every trophic level including green plants.
  3. The energy loss is is mainly due to metabolism and respiration

Which among the above statements is/are true?

  1. 1 and 2
  2. 2 and 3
  3. 1 and 3
  4. 1, 2 and 3

9.Which of the following are the characteristics of a pollutant that biomagnify?

  1. It must be long lived
  2. It should be mobile
  3. It should be water soluble
  4. It should be biologically inactive.

Select the correct answer using the codes given below

  1. 1, 2 and 4
  2. 1 and 2
  3. 1,3 and 4
  4. All the above

10.Which of the following are examples of negative interactions in an ecosystem?

  1. Commensalism
  2. Amensalism
  3. Predation
  4. Mutualism

Select the correct answer using the codes given below

  1. 1,2 and 3
  2. 2 ,3 and 4
  3. 2 and 3
  4. All the above

11.Which of the following processes can add Nitrogen to the soil?

  1. Excretion by animals
  2. Thunder and lightning
  3. Adding Fly ash to waste land
  4. Decomposition of vegetation
  5. Adding Urea based fertilizer to the soil.

Select the correct answer using the codes given below

  1. 1, 2 and 5
  2. 1, 4 and 5
  3. 1, 2 , 4 and 5
  4. All the above

12.Consider the following characteristics and find the representing biome:

  1. Temperature is uniform throughout the year
  2. Seeding, flowering, fruiting and decaying do not take place in a seasonal pattern
  3. Comprises a multitude of evergreen trees that yield hardwood.

Select the correct answer using the codes given below

  1. Tropical Deciduous forest
  2. Taiga Biome
  3. Temperate Rain Forest
  4.  Tropical Rain Forest

13.Which of the following statements are the possible effects of Eutrophication?

  1. Algal Blooms restrict the penetration of sunlight resulting in death of aquatic plants.
  2. It will increase is the dissolved oxygen content in water by increased photosynthesis by phytoplankton and algal blooms.

Select the correct answer using the codes given below

  1. 1 only
  2. 2 only
  3. Both 1 and 2
  4. Neither 1 nor 2

14. Recently There has been news that coral bleaching is prevalent over the coastal regions of Indian Ocean. In this regard which of the following conditions can help in robust development of coral reefs?

  1. Tropical waters with diurnal and annual temperature ranges are very narrow.
  2. High siltation with high river discharge
  3. Shallow coastal waters.

Select the correct answer using the codes given below

  1. 1 and 2
  2. 1 and 3
  3. 2 and 3
  4. 1, 2 and 3

15.Which of the following regions of India have presence of coral reefs?

  1. Andaman and Nicobar
  2. Lakshadweep
  3. Gulf of Kutch
  4. Gulf of Mannar

Select the correct answer using the codes given below

  1. 1, 2 and 3
  2. 1, 2 and 4
  3. 1. 3 and 4
  4. All the above

16. Recent urban floods showed importance of wetlands in the country. In this context consider the statements regarding Wetlands:

  1. Wetlands are transition zones between terrestrial and aquatic ecosystems.
  2. 70% of wetlands in India are under paddy cultivation.

Which among the above statements is/are true?

  1. 1 only
  2. 2 only
  3. Both 1 and 2
  4. Neither 1 nor 2

17. Consider the statements regarding Ramsar Convention:

  1. Wise use of wetland is the central theme of ramsar conventions.
  2. Montreux record under ramsar convention register the List of Wetlands of International Importance where changes in ecological character have occurred.
  3. In India Keoladeo National Park, Loktak Lake and Chilika lake are under Montreux record

Which among the above statements is/are true?

  1. 1 and 2
  2. 2 and 3
  3. 1 and 3
  4. 1, 2 and 3

18. Which of the following characteristics can be seen in a mangrove plant as an adaptive mechanism?

  1. Viviparity mode of reproduction
  2. Stilt root
  3. Pneumatophores
  4. Waxy Leaf

Select the correct answer using the codes given below

  1. 1, 2 and 4
  2. 1, 3 and 4
  3. 1, 2 and 3
  4. All the above

19.Ministry of Environment and Forest is pushing for use of Fly ash in various sectors. In this regard which of the following are the advantages of using Fly ash?

  1. It can be used in production of cement.
  2. It can be used in reclamation of land.
  3. It can be used in filling abandoned mines.
  4. Dissolved oxygen content in water sources can be improved with Fly ash

Select the answer using the codes given below.

  1. 1, 3 and 4
  2. 1, 2 and 3
  3. 1 and 3
  4. All the above

20. Consider the statements regarding Ecological Succession:

  1. Succession would occur faster in area existing in the middle of the large continent.
  2. Climax community is stable and ecological succession normally stops here.
  3. Unlike in the primary succession, the secondary succession starts on a well developed soil.

Which among the above statements is/are true?

  1. 1 and 2
  2. 2 and 3
  3. 1 and 3
  4. 1, 2 and 3

You can comment your answers in the comment session below  and please provide your valuable comments and suggestions.

You can go through our trending Prelims topics from here 

  1. Essentials for Prelims
  2. Environmental conservation and Conventions
  3. Ancient History for prelims and mains
  4. Steeplechase to prelims Daily tests

 

Reach the revision plan Archives from Here

Download solutions for day 1

According to our analytics and toughness of exam cutoff will be 56%