Tag: organisms and environment

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Questions Related to organisms and environment

Multiple choice biology living in harmony climate factors abiotic components organisms and environment

Which of the following is most ecologically relevant factor ?

  1. Precipitation

  2. Temperature

  3. Soil

  4. Wind
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
Precipitation is any form of a liquid or solid water particles that falls from the atmosphere and reach the surface of the earth. Its effect deflect the temperature, wind and humidity. 
So the correct answer is 'Precipitation'.
Multiple choice biology living in harmony climate factors abiotic components organisms and environment

Read the following statements and choose the correct set of option w.r.t. ecosystem.
I. Various ecosystem are interconnected by flow of energy and transfer of materials.
II. It is self sustained and self regulated segment of nature.
III. Energy flow is always cyclic while flow of nutrients is unidirectional.
IV. Density of ecosystem is governed by degree of biogeochemical cycling and the amount of nutrients.

  1. I, II and IV are correct

  2. I, II and III are correct

  3. Only III is are correct

  4. III and IV are correct
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Statements I and II are correct definitions of ecosystems. Statement IV is correct regarding ecosystem density. Statement III is incorrect because energy flow is unidirectional (from sun to producers to consumers), while nutrient flow is cyclic.

Multiple choice biology living in harmony climate factors abiotic components organisms and environment

Identify which is not correct?

  1. Age of Universe -$20$ Billion years
  2. Age of Earth - $4.5$ Billion years
  3. Life appeared on earth - $500$ million years

  4. Both a & b
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The current scientific estimate for the age of the universe is approximately 13.8 billion years, not 20 billion years. The other values provided are generally accepted scientific approximations.

Multiple choice biology living in harmony climate factors abiotic components organisms and environment

The earth is tilted at an angle of $23.5^{o}$  with respect to the plane of its orbit around the sun. If the amount of tilt were increased to $40^{o}$, we would expect in middle latitudes:

  1. Hotter summers and colder winters than at present

  2. Cooler summers and milder winters than at present

  3. Hotter summers and milder winters than at present

  4. Cooler summers and colder winters than at present
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A greater axial tilt increases the intensity of solar radiation received during the summer (hotter summers) and decreases it during the winter (colder winters) in middle latitudes, as the angle of the sun becomes more extreme.

Multiple choice biology living in harmony climate factors abiotic components organisms and environment

In the stratosphere, the air temperature normally:

  1. Decreases with increasing height

  2. Increases with increasing height

  3. Both increases and decreases depending on the season

  4. Cannot be measured
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

In the stratosphere, temperature increases with altitude because the ozone layer absorbs ultraviolet radiation from the sun, which heats the surrounding air.

Multiple choice biology living in harmony climate factors abiotic components organisms and environment

In which ecosystem sun is main source of energy?

  1. Fuel power ecosystem

  2. Man subsidized solar power ecosystem

  3. Unsubsidized natural solar powered ecosystem

  4. Naturally subsidized solar powered ecosystem
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Naturally subsidized solar-powered ecosystems are those that rely on the sun as the primary energy source but are also supported by natural energy flows like tides, wind, or flowing water.