Tag: evs - i

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Questions Related to evs - i

Multiple choice evs - i insectivorous plants meaning of an ecosystem food chain and food web components of environment and their interdependencies

Tree $\rightarrow$ Caterpillar $\rightarrow$ Robin $\rightarrow$ Cat represents a food chain. In this food chain, if the tree can provide 100000 calories of energy, how much calories of energy will be available to the robin and the cat?

  1. 10000 and 1000 calories, respectively

  2. 1000 and 100 calories, respectively

  3. 1000 and 10000 calories, respectively

  4. 100 and 1000 calories, respectively
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
The amount of energy flow decreases with every successive trophic level and only 10% is passed to the next level as useable biological energy and the rest 90% is lost in the transfer. So, in the given case, 1,00,000 calories of energy  is with producer that is the tree and thus caterpillar will have 10,000, robin will have 1,000 and the energy available with cat will be 100 calories.
So, the correct answer is option B.
Multiple choice evs - i insectivorous plants meaning of an ecosystem food chain and food web components of environment and their interdependencies

What is correct about food chain and food web?

  1. The food chain is a series of organisms feeding on one another, food web consists of a number of interlinked food chains.

  2. The food chain is a series of plants feeding on one another, food web consists of a number of interlinked chains.

  3. The food chain is a series of plant feeding, food web consists of a number of interlinked nets.

  4. The food chain is a series of plants feeding on one another, food web consists of a number of food.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

  • A food chain is a linear path in which an organism gets food, it starts with plants and ends with animals. A network of many food chains is called a food web. 
  • A food web consists of all the food chains in a single ecosystem. Each living thing in an ecosystem is part of multiple food chains. 
  • Each food chain is one possible path that energy and nutrients may take as they move through the ecosystem. All of the interconnected and overlapping food chains in an ecosystem make up a food web.

Thus, the correct answer is option A.

Multiple choice evs - i community health and hygiene regulation of the activity of heart drug, tobacco and alcohol consumption cardiac regulation and disorders

ECT is

  1. An apparatus for epilepsy

  2. A durg which acts as sedative

  3. Shock treatment

  4. Artificial organ for human
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Electroconvulsion therapy or ECT is a procedure in which electric currents are passed through the brain, intentionally triggering a brief seizure.
So, the correct answer is option C.

Multiple choice evs - i sources of water the lithosphere and the hydrosphere first aid safety and first aid

Which of the following is most important in water cycle?

  1. Transpiration through leaves

  2. Evaporation from the oceans

  3. Percolation of water into the ground

  4. Absorption of capillary water by plants
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Evaporation from the oceans is the most important in water cycle, because it comprises of the major part of global water cycle.

Multiple choice evs - i sources of water the lithosphere and the hydrosphere first aid safety and first aid

The water cycle in nature involves which of the following processes sequentially?

  1. Evaporation, precipitation and condensation

  2. Precipitation, condensation and evaporation

  3. Evaporation, condensation and precipitation

  4. Condensation, evaporation and precipitation
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Water evaporates as water vapour from water bodies like lakes, rivers, seas, etc. It then cools as it moves up and condenses to form clouds of tiny water droplets. When the cloud is saturated with warm droplets, precipitation occurs in the form of rain.

Multiple choice evs - i sources of water the lithosphere and the hydrosphere first aid safety and first aid

The continuous movement of water on surface of the earth is described as

  1. Water movement

  2. Natural flow

  3. Water cycle

  4. All of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The water cycle involves the continuous movement of water on, above and below the surface of the Earth. The surface water evaporates by the process of evaporation which condenses into tiny droplets which falls on the earth as rain as a source of the atmospheric cycle. Surface waters and atmospheric cycles are thus overlaps in hydrological cycles. Thus, the correct answer is option C.

Multiple choice evs - i sources of water the lithosphere and the hydrosphere first aid safety and first aid

Water cycles through the biosphere in all of the following processes except     

  1. Precipitation

  2. Condensation

  3. Transpiration

  4. Decomposition

  5. Runoff
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
A. When the water vapour in the atmosphere condenses and fall in the form of rain, hail, snow etc., it is called precipitation.
B. Condensation is the conversion of a gas into liquid when the temperature is lowered down.
C. Transpiration is the loss of water in vapour form from the surface of leaves through minute pores called stomata.
D. Decomposition is the process of breakdown of complex organic materials into simpler ones.
E. Runoff is the overflow or the flow of excess water over the earth's surface from any water source.
Hence, water cycles through the biosphere in all of the given processes except decomposition.
So, the correct answer is 'Decomposition'.
Multiple choice evs - i sources of water the lithosphere and the hydrosphere first aid safety and first aid

In the water cycle, the process by which water is returned to the atmosphere is known as 

  1. Runoff

  2. Condensation

  3. Evaporation

  4. Precipitation

  5. Photosynthesis
Reveal answer Fill a bubble to check yourself
C,E Correct answer
Explanation

Evaporation and photosynthesis are two process through which water is returned to the atmosphere during water cycle.

So, the correct answer is 'Evaporation and Photosynthesis'

Multiple choice evs - i sources of water the lithosphere and the hydrosphere first aid safety and first aid

Which of the following processes represents X?
River -> X -> Clouds

  1. Respiration

  2. Transpiration

  3. Combustion

  4. Evaporation
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

In the given figure, X is evaporation. Evaporation is the process of conversion of water into vapour. Water vapour rises up into the atmosphere and cools down to form clouds.

So, the correct answer is option D.