Tag: food for life

Questions Related to food for life

Sundew is also known as 

biology nutrition in animals introduction to animal nutrition food for life types of nutrition

  1. Dionaea

  2. Nepenthes

  3. Drosera

  4. Striga

Show answer
Correct Option: C
Explanation:

A. Dionaea, also called as venus fly trap is an insectivorous parasitic plant native to the USA.

B. Nepenthes is known as pitcher plant which has a pitcher like structure to trap insects. 
C. Drosera is known as sundew plant is insectivorous plants with mucilaginous substance covering the leaf surfaces that resemble drops of morning dew.
D. Striga is known as witchweed is also a parasitic plant native to Africa and Asia.
So, the correct answer 'Drosera'.

Which one is not correctly matched?

biology nutrition in animals introduction to animal nutrition food for life types of nutrition

  1. Mucor- Autotroph

  2. Orobanche- Root parasite

  3. Cuscuta- Stem parasite

  4. Drosera- Insectivore

Show answer
Correct Option: A
Explanation:

Mucor is a type of fungi, which is not an autotroph but is a saprophyte. It feeds on the dead and decaying matter.

So, the correct option is 'Mucor- Autotroph'.

A plant which manufactures its own food is

biology nutrition in animals introduction to animal nutrition food for life types of nutrition

  1. Autotrophic

  2. Symbiotic

  3. Heterotrophic

  4. Saprophytic

Show answer
Correct Option: A
Explanation:

A. The name autotroph is derived as "auto" means self and "troph" means feeding. so, the plants which can manufacture its own food are called as autotrophs. 

B. Symbiotic organisms are organisms which produce food by depending upon others for substances.
C. Heterotrophs are organisms which cannot produce their own food and depend on others for it.
D. Saprophytes are plants which obtain energy from dead and decaying matter.
So, the correct answer is 'Autotrophic'.

Which hormone is not found in plants?

biology nutrition in animals introduction to animal nutrition food for life types of nutrition

  1. Gibberellin

  2. Auxin

  3. Cytokinin

  4. Glucagon

Show answer
Correct Option: D

A plant that prepares its own food is

biology nutrition in animals introduction to animal nutrition food for life types of nutrition

  1. Autotroph

  2. Parasite

  3. Epiphyte

  4. Saprophyte

Show answer
Correct Option: A
Explanation:
  • Autotrophs are organisms, that can prepare their own food through the process of photosynthesis such as plants.
  • An epiphyte is used to refer to a plant, that grows on another plant but is not dependent on that plant for its nutrition. 
  • When an organism is nutritionally dependent on another organism, it is called parasitism. 
  • Saprophytes are organisms, that feed on dead organic matter.
  • Thus, option A is correct.

Plants which are unable to prepare their food wholly or partially are

biology nutrition in animals introduction to animal nutrition food for life types of nutrition

  1. Autophytes

  2. Heterotrophs

  3. Halophytes

  4. Holophytes

Show answer
Correct Option: B
Explanation:
  • Heterotrophs are unable to prepare their food wholly or partially and obtained food from the plant, called herbivores and from other animals, called as carnivores. 
  • Autophytes are the plants that can manufacture their own food. Halophytes are plants that grow in extremely saline conditions. 
  • Holophytes are the organism that prepares their food by photosynthesis.

Detritivores are the animals which obtain nutrients from the 

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

  1. Dead and decomposed matter in the soil

  2. Plants

  3. Animals

  4. None of the above

Show answer
Correct Option: A
Explanation:

A detritivore is a heterotrophic organism, which obtains its nutrition by feeding on detritus. Detritus is the organic matter made up of dead plant and animal material. So, the correct option is 'Dead and decomposed matter in the soil'.

Various steps of human nutrition are in the order 

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

  1. Ingestion, egestion, digestion, absorption and assimilation

  2. Ingestion, egestion, assimilation, absorption and assimilation

  3. Ingestion, assimilation, digestion, absorption and egestion

  4. Ingestion, digestion, absorption, assimilation and egestion

Show answer
Correct Option: D
Explanation:

  • There are five steps in the process of Nutrition in animals. 
  1. Ingestion: The process of taking in food into the body is called Ingestion.
  2. Digestion- It involves the break down of nutrients such as proteins into amino acids, carbohydrates into starch and fats into fatty acids and glycerol.
  3. Absorption- It involves the absorption of nutrients from the food by blood.
  4. Assimilation- It involves the process of transporting nutrients and water to all parts of the body by blood.
  5. Egestion- It involves the disposal of waste food out from the body. Hence, Various steps of human nutrition are in the order are  Ingestion, digestion, absorption, assimilation and egestion.
So, the correct answer is 'Ingestion, digestion, absorption, assimilation and egestion'.

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

Show answer
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'.