Tag: abiotic components

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Questions Related to abiotic components

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

Which of the following is not a property of water?

  1. It becomes more dense when it freezes.

  2. It dissolves molecules in the air.

  3. It absorbs heat when the hydrogen bonds break.

  4. It forms hydrogen bonds with other water molecules to create surface tension.

  5. It form hydrogen bonds with other molecules by adhesion.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
A. When water freezes, it is converted into ice. Ice has a cage like structure and thus, its density is less than water. Hence, water becomes less dense when it freezes.
B. Water is a polar solvent and thus, many gases are soluble in water. Hence, it dissolves molecules in the air.
C. Water has high energy hydrogen bonds. When these bonds break, heat is released which is absorbed by the water due to its high specific heat capacity.
D. Surface tension is interaction between water molecules which results due to formation of hydrogen bonds between water molecules.
E. Adhesion is the force of attraction between different molecules. Water can form hydrogen bonds with other molecules and this is called adhesion.
Hence, statement A is incorrect.
So, the correct answer is 'It becomes more dense when it freezes'.
Multiple choice biology living in harmony climate factors abiotic components organisms and environment

All of these are considered ecosystem services except

  1. Water purification

  2. Nutrient cycling

  3. Crop pollination

  4. Waste decomposition

  5. None of the above
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation
The benefits obtained from ecosystem are considered as ecosystem services.
A. As the polluted and wastewater flows through wetlands and forests, it gets filtered and cleaned naturally.
B. Pollination is the transfer of pollen grain from anther to the sigma. Pollinators such as bees, butterflies, birds etc. aid in pollination.
C. Waste decomposition is the breakdown of complex organic materials into simpler ones by the action of microorganisms (detritivores).
D. Nutrient cycling is the exchange and movement of organic matter within the ecosystem.
So, the correct answer is 'All of the above'.
Multiple choice biology living in harmony climate factors abiotic components organisms and environment

Which of these is an example of an abiotic factor?
I.    Crickets
II.   Rainfall
Ill.  Shark

  1. I only

  2. II only

  3. III only

  4. I and III only

  5. I, II and III
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
Abiotic factors are the non living factors, substances and conditions of the environment which influence the physiology, survival, function, behaviour and reproduction of organisms. The major abiotic factors are temperature, water, light and soil. 
Hence among all the options given in the question, rainfall is the abiotic factor while crickets and sharks are included under biotic factors as they are living factors.
So, the correct answer is 'II only'.
Multiple choice biology living in harmony climate factors abiotic components organisms and environment

Which of the following is a climatic factor?

  1. Oxygen

  2. Temperature

  3. Soil structure

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

The constituents of the environment, which directly or indirectly influence the form and functioning of organisms in any specific way are known as environmental factors. They are of two types: abiotic and biotic. 

The abiotic factors are of four types-
  1. Climatic (light, air, temperature, humidity, precipitation)
  2. Edaphic (soil)
  3. Topographic (surface behaviour of earth)
  4. Fire 
Therefore, the correct answer is option B.

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

If all the plants of the world die, all the animals will also die due to shortage of

  1. Cold air

  2. Oxygen

  3. Timber

  4. None of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
Plants maintains the balance of oxygen and carbon dioxide in the atmosphere. The plants perform photosynthesis and releases oxygen. The oxygen released by the plants is taken by the animals which is used for breakdown of food and release energy. If all the plants will die the animals will also die due to shortage of oxygen.
So, the correct answer is option B.
Multiple choice biology living in harmony climate factors abiotic components organisms and environment

Source of energy in ecosystem is

  1. Sun

  2. ATP

  3. Sugar made by plants

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

The source of energy in an ecosystem is the sun. The solar energy is trapped by green plants and converted into biologically useful form i.e., carbohydrates. All the consumers depend either directly or indirectly on green plants for nutrition. The energy flow in an ecosystem is always unidirectional i.e., solar radiation to producers to herbivores to carnivores.

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

Which of the following is a source of energy to an ecosystem?

  1. Solar energy

  2. Sugar stored

  3. Heat liberated during respiration

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

In an ecosystem, green plants trap solar energy and convert it into sugars which are utilised by all the living organisms and also passed on to successive trophic levels. Thus, the correct answer is option A.

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

In an ecosystem of abiotic components which of the following occur?

  1. Flow of energy

  2. Cycling of materials

  3. Consumers

  4. Flow of energy and cycling of materials
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

In an ecosystem plants produces their own food by utilising solar energy, water and carbon dioxide, which is then transfer to the successive trophic levels. Some of the minerals are locked in living systems as constituents of protoplasm. These minerals are returned to environment through the decomposition of death and decay of organisms.Thus, the correct answer is option B.