Biology · Environmental Studies

Ecosystem Nutrition and Energy Flow

1,093 Questions

Ecosystem nutrition and energy flow questions cover trophic levels, food chains, and biodegradable materials. These concepts frequently appear in general science sections of major competitive exams. Review these questions to build a solid understanding of ecological interactions.

Trophic levels conceptFood chain orderAutotrophic nutritionEnergy assimilationScavengers and decomposers

Ecosystem Nutrition and Energy Flow Questions

Multiple choice

Bacteria, mushrooms, and some insects are:

  1. producers

  2. consumers

  3. decomposers

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

Decomposers are organisms that break down dead organic matter. Bacteria, mushrooms, and many insects play this role in the ecosystem.

Multiple choice

Plants are:

  1. consumers

  2. producers

  3. imposters

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

Plants are producers because they create their own energy using sunlight through photosynthesis. Consumers must eat other organisms to get energy.

Multiple choice social studies from hunting - gathering to growing food from gathering to growing food community decision making in a tribe lifestyle of early human

How  does Domestication of animals help the humans ?

  1. Cows and goats gave them milk and meat.

  2. Cattle also helped them in ploughing the fields.

  3. Dogs gave company and also helped in hunting.

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

Domestication of animals help the humans in many ways for eg ; Cows ang goats gave them milk and meat , Cattle also helped them in ploughing the fields also Cattle and sheep are kept for their wool, skins, meat and milk , large animals can also be used to do physical work like carrying things or plowing the field and Dogs gave company and also helped in hunting.Civilizations that domesticated animals tame and train animals for their own personal use.

Multiple choice zoology adaptations to different ecosystems adaptations to aquatic habitat different ecosystem ecosystem

Benthos of pond ecosystem are

  1. Producers

  2. Primary consumers

  3. Secondary consumers

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

Benthos are the organisms found at the bottom of freshwater bodies such as lakes, rivers, and streams and since light cannot reach such deep water, therefore, they depend upon organic matter. This dead and decaying matter sustain their food chain hence, they are mostly scavengers or detritivores, belonging to primary consumers of detritus food chain.

So, the correct answer is option B.

Multiple choice evs substances in daily use can all changes be reversed? substances and objects changes around us

Human life require which kind of material for leaving?

  1. Food

  2. Fuel

  3. Home

  4. All of these
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
Food is something that provides nutrients. 

Nutrients are substances that provide: energy for activity, growth, and all functions of the body such as breathing, digesting food, and keeping warm; materials for the growth and repair of the body, and for keeping the immune system healthy.

Fossil fuels are used to fuel cars and aeroplanes, power electricity plants, and heat our homes. 

They are also used to make medicines, cosmetics, plastics, synthetic fabrics, and lubricants. When you brushed your teeth today, you used a product made from oil – toothpaste.

We need a home as it gives shelter and security.

Hence the option D is correct.

Multiple choice biology micro - organism useful actions of algae introduction to algae algae

.......... is a source of additional fuel through carbohydrates.

  1. Algae

  2. Bacteria

  3. Protozoa

  4. Fungi
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
Algae are photosynthetic organisms related to plants that grow in water and produce energy from carbon dioxide and sunlight. Single-celled microalgae can be used to produce large amounts of fat, which can be converted into biodiesel, the most common form of biofuel. The carbohydrate content of algae can be fermented into bioethanol or butanol fuel.
So,  the correct option is 'algae'. 
Multiple choice biology human influences on the environment human intervention in ecosystems humans in the environment involvement of humans in the conservation of environment

Which ecosystem is very important for man to produce food and fiber?

  1. Man subsidized solar power ecosystem

  2. Unsubsidized natural solar powered ecosystem

  3. Naturally subsidized solar powered ecosystem

  4. Fuel power ecosystem
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Man-subsidized solar-powered ecosystems, such as modern farms, use additional energy inputs to maximize the production of food and fiber compared to natural, unmanaged ecosystems.

Multiple choice chemistry water and air and their importance importance of oxygen is air present everywhere around us? air as a natural resource

Plant consume ________ to make their own food.

  1. Oxygen

  2. Carbon dioxide

  3. Both A and B

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

Plant consume carbon dioxide, water and other nutrients to make their own food.


The leaves contain a pigment called chlorophyll, which colours the leaves green. 


Chlorophyll can make food the plant can use from carbon dioxide, water, nutrients, and energy from sunlight. This process is called photosynthesis.


Hence the option B is correct.

Multiple choice chemistry water and air and their importance importance of oxygen is air present everywhere around us? air as a natural resource

Plants also consumes ________ for respiration.

  1. Carbon dioxide

  2. Oxygen

  3. Nitrogen

  4. Both A and B
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Plants also consume oxygen for respiration.


At night, when photosynthesis can’t take place, plants continue to consume oxygen but they don’t release any back into the atmosphere.


As the amount of oxygen consumes by the plants is very low during respiration so it doesn't effect the oxygen levels of the atmosphere.


Hence the correct option is B.