Digestion in ruminants and non-ruminants：练习题

Which of the following parts of the ruminant stomach is known as the true stomach because it secretes gastric juices and enzymes?

Which of the following best describes the primary function of the rumen in the ruminant digestive process?

In the digestive system of a ruminant, where is the primary site for the microbial fermentation of cellulose?

Which of the following farm animals is a non-ruminant that possesses a single-chambered stomach?

What is a major structural difference between the digestive tract of a ruminant and a non-ruminant like a pig?

State the primary function of the rumen in the digestive system of a ruminant animal such as a cow.

Describe the specific role of microorganisms in the rumen of a cow and explain how this allows ruminants to utilize food sources that non-ruminants cannot digest.

Contrast the function of the proventriculus in a non-ruminant bird with the abomasum of a ruminant animal.

Water absorption is a critical part of the digestive process in livestock.
(a) In the ruminant stomach, which specific compartment is primarily responsible for squeezing out water from the food pulp?
(b) In non-ruminants, name the part of the large intestine where the majority of water absorption occurs.

Ruminants and non-ruminants have different methods for digesting tough plant materials like cellulose.
(a) Describe the role of microorganisms (bacteria and protozoa) in the rumen of a cow.
(b) Contrast this with where microbial fermentation occurs in a non-ruminant like a horse or rabbit.