Tag: biology

Quizzes (1160) Questions (12174)

Questions Related to biology

Multiple choice biology interdependence in living beings - plants and animals animals as consumers scavengers and decomposers interdependence between plants and animals

For recycling of materials, which of the following is most necessary?

  1. Producers

  2. Consumers

  3. Decomposers

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

Biogeochemical cycle mainly involves the exchange of materials between biotic and abiotic components of the biosphere. The bio - genetic nutrients are essential elements required by organisms for their body building and metabolism which are provided by earth and returned to earth after the death of organisms and/or through excreta of animals. The decay of excreta and dead bodies of organisms is carried out be decomposers. The activity of decomposers releases the bio - genetic nutrients from excreta and dead bodies of organisms. Hence decomposition activity is most important part of biogeochemical cycles. Else all the nutrients will slowly become trapped in excreta and dead bodies of organisms.

So, the correct answer is option C.

Multiple choice biology interdependence in living beings - plants and animals animals as consumers scavengers and decomposers interdependence between plants and animals

Which one of the following is a decomposer?

  1. Fungi

  2. Algae

  3. Protozoa

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

The fungi generally feeds on the dead remains of plants and animals where they break the complex organic substances into the simpler ones through the digestive action. These decomposed material act as a humus for soil and they increase the fertility of the soil. The fungi and the bacteria are the common examples of decomposers. 

Thus, the correct answer is 'Fungi'.

Multiple choice biology interdependence in living beings - plants and animals animals as consumers scavengers and decomposers interdependence between plants and animals

Maintenance of soil fertility without addition of nutrition is due to

  1. Floods

  2. Crop residue

  3. Favourable temperature

  4. Microbial activity
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Soil fertility is the ability of a soil to sustain agricultural plant growth. It is maintained without addition of nutrition due to microbial activity. Microbes increase the amount of nutrients in soil available for plants. Maintaining soil fertility naturally using microbes can reduce the need for synthetic fertilizers and pesticides.

Thus, the correct answer is 'Microbial activity.' 

Multiple choice biology interdependence in living beings - plants and animals animals as consumers scavengers and decomposers interdependence between plants and animals

Most animals that live in deep oceanic water are 

  1. Primary consumers

  2. Secondary consumers

  3. Tertiary consumers

  4. Detritivores
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Most animals that live in deep oceanic water are detritivores. They are also called as scavengers. Most of them living in deep ocean include crustaceans and polychaetes.

Thus, the correct answer is option D.

Multiple choice biology interdependence in living beings - plants and animals animals as consumers scavengers and decomposers interdependence between plants and animals

Trophic level in a food chain which cycles the various materials between environment and living organisms is constituted by

  1. Producers

  2. Consumers

  3. Decomposers

  4. All of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
A food chain is series of plants/animals which are interrelated in the form of organism being eaten as food by the other. Trophic levels in a food chain are formed by producers, consumers and decomposers. In the given food chain, plants are producers. The animals eating plants are called as primary consumers and animals eating primary consumers are called as secondary consumers. Decomposers are those which decomposes the waster organic matter and release energy back in the environment. They cycles the various materials between environment and living organisms.
Thus, the correct answer is 'Decomposers.'
Multiple choice biology interdependence in living beings - plants and animals animals as consumers scavengers and decomposers interdependence between plants and animals

Decomposers of an ecosystem include

  1. Microscopic animals

  2. Bacteria and fungi

  3. Both A and B

  4. Bacteria, fungi and macroscopic animals
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
An ecosystem is made up of living things and nonliving things. Living things include plants, animals and decomosers. Nonliving things include air, water, land. Plants are producers. They synthesize their own food. Animals are consumers. They are either herbivores or carnivores. Decomposers include bacteria and fungi. They decompose the waster organic matter from animals and plants and release energy back in the environment.
Thus, the correct answer is 'Bacteria and fungi.'
Multiple choice biology interdependence in living beings - plants and animals animals as consumers scavengers and decomposers interdependence between plants and animals

Decomposers are organisms that 

  1. Elaborate chemical substances, causing death of tissues

  2. Operate in living body and simplifying oragnic substance of cells step by step

  3. Attack and kill plants as well as animals

  4. Operate in relay terms, simplifying step by step the organic constituents of dead body
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Decomposers work in a sequential process to break down the complex organic constituents of dead bodies into simpler, inorganic nutrients.

Multiple choice biology interdependence in living beings - plants and animals animals as consumers scavengers and decomposers interdependence between plants and animals

Exlusively scavenger bird is

  1. Vulture

  2. Own

  3. Kite

  4. Duck
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
A scavenger is an organism that mostly consumes decaying biomass such as meat or rotting plant material. They usually consume animals that have died of natural cause or been killed by another carnivore. Vultures are the scavengers that only eat the bodies of dead animals. They have excellent eyesight and a strong sense of smell. They use these keen senses to locate rotting carrion while they are soaring high over land.
So, the correct answer is 'Vulture'.