MCQ for environment-1

Consider the following statements:

1. The ecological pyramid of biomass is normally upright in terrestrial ecosystems and inverted in aquatic ecosystems.

2. In a grassland ecosystem, the ecological pyramid will generally be inverted.

3. The ecological pyramid of energy is always upright.

Which of the statements given above are correct?

With reference to ecological succession, consider the following statements:

1. Change in the structure of the communities is orderly and sequential.

2. The entire sequence of communities that successively change in a given area are called sere.

3. A climax community is in near equilibrium with the environment.

Which of the statements given above are correct?

With reference to biodiversity, consider the following statements:

1. Species richness measures the proportion of species at a given site.

2. Alpha diversity refers to the diversity within a particular area or ecosystem.

3. Tropical latitudes have greater species diversification than temperate regions due to long evolutionary time.

Which of the statements given above are correct?

Which among the following is/are the quantitative criteria for a region to qualify as a ‘biodiversity hotspot’?

1. It has to have conserved at least 70% of its original native habitat.

2. It must contain at least 0.5% of the world’s total species of vascular plants as endemic.

Select the correct answer using the code given below:

With reference to nutrient cycling, consider the following statements:

1. The reservoir for the gaseous as well as sedimentary cycle exists in the earth’s crust.

2. Sedimentary cycles are perfect cycles as they provide immediate recycling of nutrients.

Which of the statements given above is/are correct?

With reference to the productivity of an ecosystem, consider the following statements:

1. Primary Productivity depends on the plant species inhabiting a particular area.

2. Gross Primary Productivity is the amount of organic substances left in the plant after its own metabolism.

3. Secondary Productivity is the rate of formation of new organic matter by consumers.

4. Oceans have higher annual net primary productivity compared to land.

Which of the statements given above are correct?

Consider the following:

1. Zoological Park

2. Seed bank

3. Arboreta

4. Biosphere reserve

Which of the sites given above are the methods of ex-situ biodiversity conservation?

With reference to the Joint Forest Management in India, consider the following statements:

1. It is a mechanism to manage the forest that is owned by the State but appropriated by local communities.

2. Its enabling provisions were originally incorporated in the Wildlife Protection Act, 1972.

3. Its framework is based on the guidelines of the respective State Governments.

Which of the statements given above is/are correct?

Consider the following statements:

1. Ectotherm organisms are those that maintain a constant body temperature independent of the environment.

2. Endotherm is an organism whose regulation of body temperature depends on external sources.

3. Eurythermal organisms can tolerate and thrive in a wide range of temperatures.

Which of the statements given above is/are correct?

With reference to the Detritus food chain, consider the following statements:

1. It is the type of food chain that starts with dead organic materials.

2. It produces a very low amount of energy compared to the grazing food chain.

3. It is completely isolated from the grazing food chain.

Which of the statements given above is/are correct?