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

The organisms, which attack dead animals are

  1. First link of the food chain are known as primary producers

  2. Second link of the food chain are known as herbivores

  3. Third link of the food chain are known as tertiary consumers

  4. Present at the end of food chain are detritivores
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The organisms which attack dead animals and obtain nutrition from their detritus (decomposing parts of plant and animals, even feces) are called as detritivores (kind of heterotrophs). They are present at the end of the food chain because they consume the highest trophic level organisms by their biomacromolecular digesting enzymes. Therefore, concluding the food chains often.

So, the correct answer to the question is 'Present at the end of the food chain are detrivores'.

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

Which of the following is an example of transformer:-

  1. Grass

  2. Cow

  3. Fungi

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

In biology, transformers are the organisms that transform or convert one form of food into another. These organisms are comonly refrred to as decomposers. They convert dead organic matter into simpler inorganic molecules. Such animals include fungi, some bacteria, etc.

So, 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

Efficient recycling of nutrients from dead bodies into living things is done by?

  1. Producers

  2. Consumers

  3. Decomposers

  4. Predators
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
  • Decomposer are feed on the decaying organic matter and convert this matter into nitrogen and carbon dioxide. 
  • Decomposers are the fungi and bacteria, which are the saprophytes.
  • The saprophytes play a vital role in recycling the nutrients so that the producers i.e. plants can use them once again.
Multiple choice biology interdependence in living beings - plants and animals animals as consumers scavengers and decomposers interdependence between plants and animals

Which of the following can convert organic substance into inorganic substance?

  1. Producers

  2. Decomposers

  3. Primary consumers

  4. Secondary consumers
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
  • Decomposers are organisms that break down the dead organic matter into carbon dioxide, water, minerals and other simple chemicals called inorganic substances.
  • These inorganic substances are utilized by green plants. 
  • Leaf litter, dead wood, animal carcasses and faeces are the organic matter present in the soil.
  • So, 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

The breakdown of dead and decaying organisms is carried out by

  1. Decomposers

  2. Humans

  3. Insects

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

Decomposers are organisms that break down dead or decaying organisms, and in doing so they carry out the natural process of decomposition. Like herbivores and predators, decomposers are heterotrophic, meaning that they use organic substrates to get their energy, carbon and nutrients for growth and development. 

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

Which of the following helps in maintaining the supply of nutrients to the growing plants?

  1. Herbivores

  2. Carnivores

  3. Decomposers

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

The food chain is comprised of different species which depend on each other for energy. The producers are which can prepare the food. The consumers feed on the producers. The dead plants and animals are degraded due to the microbial activity of the decomposers. The decomposers include the microbes which are involved in the breaking down of the organic complexes and recycling of the nutrients. They help in maintaining the continuous supply of the nutrients for the producers. 

Thus, 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 of the following are nature's cleaners?

  1. Producers

  2. Consumers

  3. Symbionts

  4. Decomposers and scavengers
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Scavengers are organisms, that consume remains of other dead organisms or their waste products. The scavenger's role in the ecosystem is to prepare bodies for decomposition. They open up the bodies so that others can share the food. Scavengers include large animals. For example, crow and vulture. Many large carnivores, such as hyena and lion, which hunt regularly, will scavenge if given a chance. 

Decomposers are organisms that transform the bodies of both plants and animals back into the basic constituents they were made from. Decomposers are mostly bacteria and fungi. Hence, decomposers and scavengers are nature's cleaners.

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 genetically improved bacteria for pollution control.

  1. Pseudomonas

  2. Rhlzobium

  3. N!trobacter

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

Pseudomonas species, particularly Pseudomonas putida, have been genetically modified to degrade various environmental pollutants including hydrocarbons, pesticides, and heavy metals. This makes them valuable for bioremediation efforts to clean up contaminated sites. The other options are important soil bacteria but not primarily known for pollution control.