Ag Science - Strand 4 - Animal Physiology

The enzyme amylase breaks down starch into:

• glucose

• lactose

• maltose

• sucrose

The saliva of cattle contains the compound sodium bicarbonate. What is the function of the compound?

• to break down cellulose

• to neutralise the acid in the abomasum

• to maintain the pH of the rumen between 6.5 and 7.2

• to prevent the growth of bacteria in the rumen

Identify the third compartment of the ruminant stomach

• rumen

• reticulum

• omasum

• abomasum

What happens to food that is too big to be broken down by the microorganisms in the rumen?

• it passes out of the ruminant digestive system undigested

• it is regurgitated back up to the mouth and is rechewed again

Which part of the ruminant digestive system has the same function as the stomach in the pig's digestive system?

• rumen

• reticulum

• omasum

• abomasum

The folds inside the omasum increase the surface area for the __________________________________

• absorption of water

• production of gastric juices

• absorption of nutrients

The oesophageal groove forms a channel in young calves and lambs from the mouth to the ________.

• reticulum

• omasum

• abomasum

• small intestine

A cow develops bloat when:

• foam builds up in the rumen, trapping gas

• gas cannot be expelled from the rumen

• cattle are put on early grass that contains a lot of clover

Pigs are monogastric animals and therefore do not have a rumen to help break down __________

• protein

• starch

• fat

• cellulose

Name the organ that produces bile

• large intestine

• liver

• gall bladder