Tag: what do animals eat?

Questions Related to what do animals eat?

Ptyalin cannot work in stomach, because it be comes _____________.

biology what do animals eat? digestion in ruminants nutrition in other organisms busy at work - our internal organs

  1. Inactive due to HCl

  2. Inactive due to Renin

  3. Inactive due to Pepsin

  4. None of these

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Correct Option: A

During cellulose fermentation by anaerobic bacteria in rumen and reticulum, cellulose is mainly changed into.

biology what do animals eat? digestion in ruminants nutrition in other organisms busy at work - our internal organs

  1. $CO _2$

  2. Ethyl alcohol

  3. Lactic acid

  4. Volatile fatty acids

Show answer
Correct Option: D
Explanation:

Cellulose is broken down to short chain fatty acids in ruminants ,during cellulose fermentation by anaerobic bacteria.

Correct answer-D


Which of the following animals has compound stomach (rumen)?

biology what do animals eat? digestion in ruminants nutrition in other organisms busy at work - our internal organs

  1. dog

  2. rat

  3. horse

  4. cow

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Correct Option: D
Explanation:

Ruminants include cattle, sheep, goats, buffalo. These animals all have a digestive system that is uniquely different from our own. Instead of one compartment to the stomach, they have four. Of the four compartments, the rumen is the largest section and the main digestive center

So, the correct answer is 'Cow'

Which of the following is the stomach part in which herbivores secretes the grass which is swallowed quickly? 

biology what do animals eat? digestion in ruminants nutrition in other organisms busy at work - our internal organs

  1. Lumen

  2. Pyloric

  3. Rumen

  4. Ileum

Show answer
Correct Option: C
Explanation:

Vertebrates lack the ability to hydrolyse the beta glycosidic bond of plant cellulose due to the lack of the enzyme cellulase. Thus, ruminants must completely depend on the microbial flora, present in the rumen or hindgut, to digest cellulose. Digestion of food in the rumen is primarily carried out by the rumen microflora. Since, the environment inside a rumen is anaerobic, most of these microbial species are obligate or facultative anaerobes that can decompose complex plant material, such as cellulose, hemicellulose, starch, and proteins. As bacteria conduct fermentation in the rumen, they consume approximately 10% of the carbon, 60% of the phosphorus, and 80% of the nitrogen that the ruminant ingests. To reclaim these nutrients, the ruminant then digests the bacteria in the abomasum. The enzyme lysozyme has adapted to facilitate digestion of bacteria in the ruminant abomasum. Pancreatic ribonuclease also degrades bacterial RNA in the ruminant small intestine as a source of nitrogen. 

Therefore, the correct answer is option C.

Grass is rich in the substance called as

biology what do animals eat? digestion in ruminants nutrition in other organisms busy at work - our internal organs

  1. Amino acid

  2. Fatty acid

  3. Cellulose

  4. Pepsin

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Correct Option: C
Explanation:
The grass is a bulb plant. The cell wall of grass leaves is made of cellulose. Cellulose is stored food substance in plants and it is typically the most abundant constituent by mass in the grass.
So, the correct answer is 'Cellulose'.

The partially digested food in the stomach of ruminants is called as

biology what do animals eat? digestion in ruminants nutrition in other organisms busy at work - our internal organs

  1. Bud

  2. Cud

  3. Ruminant

  4. Rumen

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Correct Option: B
Explanation:

  • Rumination is also called second chewing. 
  • Ruminant stomach: The stomach of a ruminant is divided into four chambers – the rumen, reticulum, omasum and abomasum. 
  • The process of digestion is as follows: The food is chewed and swallowed quickly and passed into the first stomach called Rumen. The microorganisms help in breaking down the food. Digestive juices of the rumen partially digest the food. The partially digested food in the rumen is called cud. Hence, The partially digested food in the stomach of ruminants is called cud.
So, the correct answer is 'cud'.

The sac like structure between the small intestine and the large intestine in ruminants is

biology what do animals eat? digestion in ruminants nutrition in other organisms busy at work - our internal organs

  1. Lumen

  2. Appendix

  3. Rumen

  4. Jejunum

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Correct Option: C
Explanation:

Rumen is a sac-like largest part of the stomach of the ruminants. It acts as a storage or holding vat for feed. It is also a fermentation vat.

So, the correct answer is 'Rumen'.

Which of the following is not a ruminant?

biology what do animals eat? digestion in ruminants nutrition in other organisms busy at work - our internal organs

  1. Cow

  2. Buffalo

  3. Dog

  4. Goat

Show answer
Correct Option: C
Explanation:
Ruminants are the mammals that have the ability to take nutrients from the plant-based food containing cellulose by fermenting it in a specialized stomach prior to digestion with the help of microbes. Dogs are not able to digest cellulose due to the lack of enzyme called cellulase and hence dogs are not ruminant.
So, the correct answer is 'Dog '.

The number of chambers in the stomach of ruminants is

biology what do animals eat? digestion in ruminants nutrition in other organisms busy at work - our internal organs

  1. 3

  2. 2

  3. 4

  4. 1

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Correct Option: C
Explanation:
Ruminants have 4 chambers of stomach which include:-
1) Rumen - sac-like pouch acts as a storage or holding vat for feed.
2) Reticulum - honeycomb shaped contain heavy or dense feed of the animal.
3) Omasum - globe-shaped structure, absorb water and other substance from digestive contents.
4) Abomasum- only component lined with glands that release digestive enzyme and hydrochloric acid.

Cellulose in plants can be digested by 

biology what do animals eat? digestion in ruminants nutrition in other organisms busy at work - our internal organs

  1. Pigeons

  2. Cows

  3. Cats

  4. Bears

Show answer
Correct Option: B
Explanation:
Cow has sac-like rumen which has bacteria that synthesize cellulase enzyme. This enzyme helps in the digestion of the cellulose containing grasses.
So, the correct answer is 'Cows'.