Tag: zoology

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Questions Related to zoology

Multiple choice zoology biology : an introduction characteristics of life living world and classification attributes of living organisms

In the binomial system of taxonomy, developed during the $18^{th}$ century by C. Linnaeus, the second word of an organism's biological name represents.

  1. Species

  2. Genus

  3. Race

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

In the binomial system of taxonomy, the second word of an organised biological name represents the species. The binomial nomenclature was formed by Linnaeus. In this, each name has two components the generic name and the specific epithet. Generic name starts with capital letter while the other with small letter. Both the word, when handwritten are separately underlined or printed in italics to indicate their Latin origin. Name of the another appear at the end of the biological name in abbreviated form.

eg:- Mangifera indica Linn was first described by Linnaeus ans is the scientific name of mango. Mangifera is the gnus while indica is the species name.

Multiple choice zoology biology : an introduction characteristics of life living world and classification attributes of living organisms

Which of the following is a defining characteristic of living organisms?

  1. Growth

  2. Ability to make sound

  3. Reproduction

  4. Response to external stimuli
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

In physiology, a stimulus is a perceptible change in the interior or outside condition. The capacity of a living being or organ to react to outside upgrades is called affectability. 

So, the correct option is 'Response to external stimuli'.

Multiple choice zoology meaning of life energy flow and loss energy flow in a food chain energy flows

A freshwater organism cannot survive in a water body that has grater ......... that its original habit. 

  1. Oxygen content

  2. Depth

  3. Salt concentration

  4. Water clarity
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

For aquatic organisms the quality (chemical composition, PH) of water is very important. The salt concentration (measured as salinity in parts per thousand), is less than 5 parts per thousand in inland waters, 30-35 parts per thousand in the sea and more than 100 parts per thousand in some hyper saline lagoons. Many fresh water animals cannot live for long in sea water and vice versa because of the osmotic problems they would face. 

So, the correct answer is 'Salt concentration'.

Multiple choice zoology meaning of life energy flow and loss energy flow in a food chain energy flows

The trophic efficiency of producers, herbivores and carnivores are respectively

  1. $10%, 20%, 30%$
  2. $20%, 30%, 60%$
  3. $20%,40%,80%$
  4. Always $10%$
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
According to Lindeman's law of trophic efficiency, 10% of the energy is transferred from one trophic level to another. The trophic efficiency is related to the growth efficiency and standard metabolism of the individual.
So, the correct answer is '10'.
Multiple choice zoology meaning of life energy flow and loss energy flow in a food chain energy flows

Ten percent of energy gets transferred in food chain, this is enuciated by

  1. Lindeman

  2. Haeckel

  3. Schimper

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

Raymond Lindeman gave the famous 10 % law. According to this law, at each trophic level, only 10% of the energy of the subsequent trophic levels is transmitted. So, the amount of energy goes on decreasing at each tropic level.

So, option A "Lindeman" is the correct answer.

Multiple choice zoology meaning of life energy flow and loss energy flow in a food chain energy flows

Ecosystem dynamics is governed by

  1. Solar radiation and the carbon cycle

  2. Photosynthesis and respiration

  3. The carbon cycle and photosynthesis

  4. Energy flow and chemical/nutrient cycling

  5. The nitrogen cycle and the phosphorous cycle
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Ecosystem dynamics are primarily driven by the continuous flow of energy through trophic levels and the cycling of essential chemical nutrients through the biotic and abiotic components.

Multiple choice zoology meaning of life energy flow and loss energy flow in a food chain energy flows

The energy flow in an ecosystem is

  1. Multidirectional

  2. Unidirectional

  3. Bidirectional

  4. Circular
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The flow of energy in the ecosystem is unidirectional. The energy enters the plants (from the sun) through photosynthesis during the making of food. This energy is then passed on to the successive trophic levels in a food chain is only 10% and rest energy get lost as heat during transfer and life process. 

Thus, the correct answer is option A.

Multiple choice zoology meaning of life energy flow and loss energy flow in a food chain energy flows

According to a pyramid of production, approximately what percent of the energy at a trophic level is transferred to the next trophic level? 

  1. 2%

  2. 10%

  3. 50%

  4. 75%

  5. 90%
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
The number of trophic levels in the food chain is restricted as the transfer of energy follows 10 percent law. This law states that only 10% of the energy is transferred to each trophic level from the lower trophic level. 
According to Lindeman's Law of trophic efficiency, the efficiency of energy transfer from one trophic level to the next is about 10%. Lindeman considered individual organisms belongs to trophic levels with each level acting as a transformer of energy.
So, the correct answer is 10%.