MCQ for test-2-13th-september-2023

Consider the following statements with reference to the interior of the earth:

1. The outer core is in liquid state while the inner core is in solid state.

2. The crust and the uppermost part of the mantle are called the lithosphere.

3. The oceanic crust is thicker as compared to the continental crust.

Which of the statements given above is/are not correct?

Consider the following pairs:

Which of the pairs given above is/are correctly matched?

Which one of the following best describes the term “circle of illumination” with respect to the motion of earth?

Consider the following pairs:

Which of the pairs given above is/are correctly matched?

Consider the following statements with reference to the process of planetary differentiation:

1. The lighter materials sink towards the core and the heavier materials move towards the surface.

2. It happens in lava lakes and in magma chambers beneath volcanoes on Earth.

Which of the statements given above is/are correct?

“When a ship appears over the distant horizon, the top of the mast is seen first before the hull. In the same manner, when the ship leaves the harbor its disappearance over the curved surface is equally gradual.”

The phenomenon in question occurs due to

Consider the following statements with respect to International Date Line (IDL):

1. It is a perfect straight line that follows the 180-degree longitude.

2. A traveller crossing the date line from West to East gains a day.

Which of the statements given above is/are correct?

Among the following cities, which one lies nearest to the 82° 30' E longitude of Indian Standard time Meridian?

“It is also called as Expanding universe hypothesis. It argues that as time passes, galaxies move further and further apart. It denotes that our universe emerged from a singularity.” This is the most likely descriptions of

Consider the following statements:

1. The loss of the earth's primordial atmosphere was caused by degassing.

2. During the evolution of the earth, photosynthesis was responsible for flooding the atmosphere with oxygen.

Which of the statements given above is/are correct?

With reference to major elements of the Earth’s Crust, which of the following is the correct sequence in descending order of their weight?

1. Silicon

2. Iron

3. Aluminium

4. Oxygen

Select the correct answer using the codes given below

Consider the following countries:

1. Tajikistan

2.Turkmenistan

3.Uzbekistan

4.Kyrgyzstan

5.China

Which of the above-mentioned countries border Afghanistan?

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?

Consider the following statements with reference to the ecological interactions:

1. Competition occurs when two populations need a vital resource that is in short supply.

2. The process of cross-pollination between flowering plants and bees demonstrates the Phenomenon of Symbiosis.

3. In Parasitism one species is harmed while the other is unaffected.

Which of the statements given above is/are correct?

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 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?

With reference to the Ecological Concepts, consider the following statements:

1. No two species in a habitat can have the same niche.

2. Earth has only three major habitats namely terrestrial, freshwater and ocean.

3. A habitat cannot support a wide range of species with similar needs.

Which among the above statements is/are correct?

With reference to Nitrogen cycle, consider the following statements:

1. Abiotic processes such as lightning and UV radiation fix more than half of the nitrogen in the atmosphere.

2. Nitrifying bacteria transforms soil ammonia into nitrates.

3. Azotobacter and clostridium are nitrifying bacteria found in soil.

Which of the statements given above is/are correct?

With reference to the flow of energy in an ecosystem, consider the following statements:

1. Ecological efficiency is the efficiency at which energy is transferred from one trophic level to another.

2. More than half of the energy is transferred from one trophic level to another.

3. Assimilation efficiency is the efficiency by which animals convert the food they ingest into energy.

4. Herbivores generally have higher assimilation efficiencies than carnivores.

Which of the statements given above are correct?

With reference to the stratification in an ecosystem, consider the following statements:

1. Variation in sunlight can lead to vertical stratification in forests.

2. Stratification results in increased interspecific competition.

3. Horizontal differences among species generally occur due to differences in the amount of water or nutrients.

Which of the statements given above is/are correct?

What is the correct chronological order of the following ecosystems based on the decreasing level of Net Primary Productivity?

1. Savanna Grasslands

2. Open Ocean

3. Estuaries

4. Forests

Select the correct answer using the code given below.

In which one of the following states is Aghanashini estuary located?