Tag: biology

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Questions Related to biology

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

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

  1. Lumen

  2. Appendix

  3. Rumen

  4. Jejunum
Reveal answer Fill a bubble to check yourself
C Correct answer
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'.

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

Which of the following is not a ruminant?

  1. Cow

  2. Buffalo

  3. Dog

  4. Goat
Reveal answer Fill a bubble to check yourself
C Correct answer
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 '.
Multiple choice biology what do animals eat? digestion in ruminants nutrition in other organisms busy at work - our internal organs

The number of chambers in the stomach of ruminants is

  1. 3

  2. 2

  3. 4

  4. 1
Reveal answer Fill a bubble to check yourself
C Correct answer
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.
Multiple choice biology what do animals eat? digestion in ruminants nutrition in other organisms busy at work - our internal organs

Why cannot ruminants chew food at the same time they take in?

  1. Grass does not taste good.

  2. Grass contains cellulose that cannot be digested easily.

  3. The grass is hard in structure.

  4. Ruminants eat a lot of grass at the same time.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
Ruminants are the herbivores and eat grasses. Grasses contains cellulase as their stored food. Cellulose needs an enzyme called cellulase for its digestion which is present in the rumen. Ruminants do not chew their food at the same time they take in as they require the fermented cud to be regurgitated and chewed. 
So the correct answer is 'Grass contains cellulose that cannot be digested easily'.
Multiple choice biology what do animals eat? digestion in ruminants nutrition in other organisms busy at work - our internal organs

The part of the stomach where a ruminant stores food is called as

  1. Lumen

  2. Rumen

  3. Tubule

  4. Artery
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
Rumen is a sac-like structure. It is the largest part of the stomach of ruminants. It is a part where food is stored, mechanically processed and exposed to bacteria that synthesize cellulase enzyme to break cellulose.
So, the correct answer is 'Rumen'.
Multiple choice biology what do animals eat? digestion in ruminants nutrition in other organisms busy at work - our internal organs

The primary features of differentiation between ruminants and non-ruminants are the presence of which of the structure in ruminants?

  1. 5 chambered stomach

  2. 4 chambered stomach

  3. 3 chambered stomach

  4. 1 chambered stomach
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
Ruminants have 4-chambered stomach. The four chambers are namely rumen, reticulum, omasum and abomasum. Like other vertebrates, ruminants (including deer and cattle), are unable to digest plant material directly, because they have 4-chambered stomach for better digestion.
So the correct answer is '4-chambered stomach'.
Multiple choice biology what do animals eat? digestion in ruminants nutrition in other organisms busy at work - our internal organs

The true stomach in cows is called as

  1. Rumen

  2. Abomasum

  3. Lumen

  4. None of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
True stomach in cow is called abomasum. It is the only part of the ruminant's stomach that has glands, secreting acids and enzymes for digestion. It receives and digests food from omasum and pass it on to the small intestine.
So, the correct answer is 'Abomasum'.
Multiple choice biology what do animals eat? digestion in ruminants nutrition in other organisms busy at work - our internal organs

Humans cannot digest cellulose like cattle do because

  1. They have a smaller stomach.

  2. They do not have cellulose-digesting bacteria in their stomach.

  3. They do not consume cellulose.

  4. They have less digesting capacity than ruminants.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
Food is stored in the plants as cellulose. Cellulase is an enzyme synthesized by bacteria in stomach of ruminant which is used to digest cellulose. Humans do not have cellulase and hence they cannot digest cellulose.
So, the correct answer is 'They do not have cellulose-digesting bacteria on their stomach'.
Multiple choice biology what do animals eat? digestion in ruminants nutrition in other organisms busy at work - our internal organs

The cud is brought back to the mouth during digestion in ruminants. This is called as

  1. Ingestion

  2. Regurgitation

  3. Egestion

  4. Absorption
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
Ruminants have 4-chambered stomach. Reticulum is a part of ruminant's stomach that allow the animal to regurgitate the cud, to reprocess particulate matter and chew the cud again.
So the correct answer is 'Regurgitation'.