Tag: biology

Questions Related to biology

In single celled animals the food is taken

biology what do animals eat? introduction to animal nutrition food for life types of nutrition

  1. By the entire body surface

  2. Mouth

  3. Teeth

  4. Vacuoles

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Correct Option: A

Which mode is used by snakes for taking food?

biology what do animals eat? introduction to animal nutrition food for life types of nutrition

  1. Swallowing

  2. Chewing

  3. Sucking

  4. Biting

Show answer
Correct Option: A
Explanation:
Snakes are carnivores. They eat their food by mechanism of swallowing. it is the process that allows for a substance to pass from the mouth, to the pharynx and into esophagus. Swallowing is done by raking with the lower jaw until the prey is far enough back to be helped down by body undulations.
So, the correct answer is 'Swallowing'.

The animals that consume plants as food are called as

biology what do animals eat? introduction to animal nutrition food for life types of nutrition

  1. Herbivores.

  2. Saprophytes.

  3. Carnivores.

  4. Omnivores.

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Correct Option: A
Explanation:

Herbivores are animals that consume plants as their food. Herbivores are at second level of food chain and are considered primary consumers.

The breakdown of complex components of food into simple ones is called as

biology what do animals eat? introduction to animal nutrition food for life types of nutrition

  1. Respiration

  2. Digestion

  3. Excretion

  4. Absorption

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Correct Option: B
Explanation:
Digestion is the process of conversion of complex food substances into simpler absorbable substances. It is carried out by our digestive system by mechanical and biochemical methods.
So, the correct answer is 'Digestion'.

Animal nutrition does not include which of the following?

biology what do animals eat? introduction to animal nutrition food for life types of nutrition

  1. Mode of intake

  2. Cooking of food

  3. Nutrient requirement

  4. Utilization in the body

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Correct Option: B
Explanation:
Animal nutrition include mode of intake of food, nutrient requirement of the body, and its utilization in the body. Cooking of food is not included in animal nutrition. Food is cooked on flame outside the body of the animal. Human being consume cooked food. 
So, the correct answer is 'Cooking of food'.

The process of expelling of food in amoeba 

biology what do animals eat? introduction to animal nutrition food for life types of nutrition

  1. Egestion

  2. Digestion

  3. Nutrition

  4. None of the above

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Correct Option: A
Explanation:
When a sufficient amount of undigested food gets collected in the food vacuole, it is thrown out of the body by rupturing cell membrane. The process of removal of undigested food from the body is called egestion.
So, the correct option is 'Egestion'.

 The animals that feed by straining suspended matter and food particles from water is known as

biology what do animals eat? introduction to animal nutrition food for life types of nutrition

  1. Filter feeders

  2. Detritivores

  3. Fungivores

  4. None of the above

Show answer
Correct Option: A
Explanation:

Suspended food (phytoplankton, zooplankton, algae and other water-borne nutrients and particles) are trapped in the mucus of a gill, and from there are transported to the mouth, where they are eaten, digested and expelled as faeces or pseudofeces.


So, the correct option is 'Filter feeders'.

Which of the following animals are involved in the fluid feeding mode?

biology what do animals eat? introduction to animal nutrition food for life types of nutrition

  1. Honey bees

  2. Amoeba

  3. Cow

  4. None of the above

Show answer
Correct Option: A
Explanation:

Fluid-feeding insects, such as butterflies, moths, and flies (20% of all animal species), are faced with the common selection pressure of having to remove and feed on trace amounts of fluids from porous surfaces. 

So, the correct option is 'Honey Bees".

Which of the following phenomena helps in the degradation of complex substances of food into simpler ones?

biology what do animals eat? introduction to animal nutrition food for life types of nutrition

  1. Digestion

  2. Ingestion

  3. Excretion

  4. Assimilation

Show answer
Correct Option: A
Explanation:

The process in the alimentary canal by which food is broken up physically, as by the action of the teeth, and chemically, as by the action of enzymes, and converted into a substance suitable for absorption and assimilation into the body.


So, the correct option is 'Digestion'.


Animals that feed discontinuously

biology what do animals eat? introduction to animal nutrition food for life types of nutrition

  1. exhibit extremely rapid digestion

  2. must have digestive tracts that permit storage

  3. are able to avoid predators by limiting their feeding time

  4. both (b) and (c)

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Correct Option: D
Explanation:

  • Continuous feeders: That must "eat" constantly because the food is taken in and then pushed out soon afterwards are called continuous feeders. Most of these animals either are permanently attached to something (such as clams or mussels) or are very slow moving.
  • Discontinuous feeders: Consume larger meals and store the ingested food for later digestion. These animals generally are more active and can avoid predators. Hence, the animals that feed discontinuously must have digestive tracts that permit storage and are able to avoid predators by limiting their feeding time.
So, the correct answer is 'both (b) and (c).