Tag: abiotic components

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Questions Related to abiotic components

Multiple choice botany environmental factors soil-nature climate factors abiotic components

If the average temperature of the sun increased, the wavelength of peak solar emission would:

  1. Shift to a shorter wavelength

  2. Shift to a longer wavelength

  3. Remain the same

  4. Impossible to tell from given information
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

According to Wien's Displacement Law, the wavelength of peak emission is inversely proportional to the temperature. If the temperature increases, the peak wavelength shifts to a shorter value.

Multiple choice zoology environmental factors soil-nature climate factors abiotic components organisms and environment

The minimum temperature in the sea is .......... , while in freshwater ponds it never goes below ..........

  1. -3$^o$C, 0$^o$C
  2. -10$^o$C, -4$^o$C
  3. 20$^o$C, -10$^o$C
  4. 25$^o$C, -100$^o$C
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The temperature of the surface waters varies mainly with latitude. The polar seas (high latitude) can be as cold as -2 degrees Celsius (28.4 degrees Fahrenheit), while the Persian Gulf (low latitude) can be as warm as 36 degrees Celsius (96.8 degrees Fahrenheit).
Temperature varies in ponds and lakes seasonally. During the summer, the temperature can range from $4^0$C near the bottom to $22^0$C at the top. During the winter, the temperature at the bottom can be $4^0$C, while the top is $0^0$C (ice).

Thus, the correct answer is option A.

Multiple choice botany environmental factors soil-nature climate factors abiotic components

At the North Pole the sun will rise above the horizon on _________ and set below the horizon on __________

  1. June 22; September 23

  2. September 23; December 22

  3. March 21; September 23

  4. June 22; December 22
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

At the North Pole, the Sun rises at the spring equinox (March 21) and sets at the autumnal equinox (September 23), resulting in six months of daylight followed by six months of darkness.

Multiple choice zoology environmental factors soil-nature climate factors abiotic components organisms and environment

Aquatic and terrestrial animals need sulphur and nitrogen to

  1. Grow

  2. Transpire

  3. Evaporate

  4. Photosynthesis
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Sulphur and nitrogen are essential nutrients for the synthesis of proteins and other biological molecules required for growth in all living organisms. Other options like transpiration or photosynthesis are specific physiological processes that do not directly explain the fundamental need for these elements.

Multiple choice zoology environmental factors soil-nature climate factors abiotic components organisms and environment

Scientists are able to determine the air temperature in the thermosphere by:

  1. Using radiosondes

  2. Using temperature probes in orbiting satellites

  3. Observing changes in satellite orbits

  4. Direct measurements in manned, high-altitude balloons
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The thermosphere is too high for balloons and radiosondes, and satellites orbit within it, making direct temperature probes difficult due to the low density of air. Scientists instead infer the temperature by observing the drag effects on satellite orbits, which are directly influenced by the density and temperature of the thermosphere.

Multiple choice zoology environmental factors soil-nature climate factors abiotic components organisms and environment

Initial causes of ecological succession includes:

  1. Climatic and Biotic factors

  2. Abiotic Factors

  3. Water Vapours

  4. Air Precipitation
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Ecological succession is the process of change in the species structure of an ecological community over time. It is primarily initiated by climatic factors (like temperature and rainfall) and biotic factors (like the introduction of pioneer species or human activity).

Multiple choice botany environmental factors soil-nature climate factors abiotic components

In the northern hemisphere, north-facing hillsides have a ____________ growing season than south-facing hillsides.

  1. Shorter

  2. Longer

  3. Up

  4. Down
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

In the northern hemisphere, south-facing slopes receive more direct sunlight throughout the day, leading to warmer temperatures and a longer growing season. Conversely, north-facing slopes receive less direct sunlight, resulting in cooler conditions and a shorter growing season.

Multiple choice zoology environmental factors soil-nature climate factors abiotic components organisms and environment

Ecotype is a type of species in which environmentally induced variations are

  1. Temporary

  2. Genetically fixed

  3. Genetically not related

  4. None of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

An ecotype is a distinct population within a species that has adapted to specific local environmental conditions. These adaptations are genetically fixed, meaning they are inherited and persist even if the organism is moved to a different environment.

Multiple choice zoology environmental factors soil-nature climate factors abiotic components organisms and environment

Non living things in an environment is known as

  1. Biotic Factors

  2. Abiotic Factors

  3. Biotic and abiotic factors

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

In ecology, the environment is divided into biotic factors (living components) and abiotic factors (non-living components). Abiotic factors include things like sunlight, temperature, water, and soil.

Multiple choice zoology environmental factors soil-nature climate factors abiotic components organisms and environment

Which of the following is not properly matched?

  1. Formaldehyde- Carcinogenic

  2. Sulphur dioxide - Respiratory problems

  3. Nitrogen oxide - Brown air
  4. Mean annual temperature - $25^o$C

  5. Photochemical smog - Grey air
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Mean annual temperature is calculated by subtracting the lowest recorded temperature from the highest recorded temperature of the of the day. It can vary depending on the weather and climate of an area.

A. Formaldehyde has been classified as cancer causing agent by the EPA. It has shown leukaemia incidences.
B. Sulphur dioxide is responsible for the respiratory tract diseases like asthma, bronchitis etc.
C. Nitrogen oxide is called the brown air because of the change in frequencies of absorption of light when nitrogen combines with the oxygen.
D. Mean annual temperature can vary depending on the weather and climatic conditions.
E. Photochemical smog forms grey air due to the formation of ozone and PAN that decreases the visibility.
Hence, the correct answer is 'Mean annual temperature - 25$^{o}$C'