Which Of The Following Animals Uses A Radula To Scrape Food Into Its Mouth

HOW ANIMALS FEED

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The Teeth of Herbivores

Herbivorous animals are adapted to consume vegetation. The sheep has no front teeth on its acme jaw. Instead it has a hard pad of gum. The front teeth in its bottom jaw are small and sharp.

The sheep eats grass which is easy to pull out of the footing. Grass must be chewed well, however, to pause it down into small pieces before information technology is swallowed.

The sheep�s dorsum teeth are very large and have broad surfaces. The ridges of the lesser teeth fit together. The sheep moves its jaw from side to side. The grass is broken upwards betwixt these large molars.

Herbivorous birds do not have teeth to grind up the vegetation they eat. Teeth would brand their skulls too heavy and make flight difficult. Instead, a role of their digestive organization, chosen the crop, contains stones which grind up the plant material they swallow.

Ruminants

Some herbivores are chosen ruminants. The cow and the giraffe are ruminants. These animals have 2 stomachs. During the day they chew their food in the aforementioned way as sheep. When a ruminant swallows, the food goes into the first tummy, called the rumen. In the evening the beast brings a mouthful of food back into its mouth from its first stomach. This is called regurgitating the food. The nutrient is chewed well once again before information technology is swallowed into the 2nd breadbasket. This second chewing is called chewing the cud.

Rodents

These mammals have two pairs of large teeth at the front of their mouths. One pair of teeth is found in the elevation jaw and the other pair in the lesser jaw. These gnawing teeth allow animals, such as the rat and squirrel, to bite through hard seeds.

Invertebrate Herbivores

All herbivores need to chew their food well. The locust or cricket has many complicated parts to its mouth. Two of these parts are called mandibles. The mandibles are made of a very hard substance called chitin. Every blade of grass the insect eats is passed between the mandibles. The surface of the mandibles is very similar to the surface of the back teeth of the sheep. The grass is crushed between the two mandibles as they come together.

The Snail

Snail Radula (Mag x640)

The Roman, or edible snail tin can exist as much equally 25 cm long with a mass of 250 grammes. Snails have a long tongue called a radula. The radula is covered with many rows of teeth. At that place are 20000 teeth altogether. These teeth take flattened surfaces and the snail uses the radula to scrape off small pieces of nutrient which are then sucked into its trunk.

Fact File No.20

Not all snails are herbivores. One species of sea-water snail eats clams. It produces sulphuric acid which information technology uses to burn a pigsty in clams� shells. The snail and then sucks out the soft parts of the clam through this hole.

Another type of body of water-water snail waits until an oyster opens its shell. The snail so forces its own shell between the two halves of the oyster�s shell. The oyster is non able to close its shell to protect itself and the snail starts to feed on the soft parts of the oyster.

The Earthworm

The earthworm eats rotting vegetation

The earthworm eats soil which contains a lot of vegetable material. It has no teeth to grind this vegetation but a part of its digestive is adjusted to practice this. In that location is a small pouch, called the crop, which contains many small, sharp stones. When the food reaches the ingather it is cut upwards into much smaller pieces by these sharp stones.

Filter Feeders

Many animals which live in h2o feed on the small microscopic animals and plants in the plankton. Mussels create a current of h2o through their bodies, using muscles. As the water moves through, special hair-similar structures sieve out the plankton. This is chosen filter feeding.

The flamingo is also a filter feeder. Information technology puts its caput upside downwardly into the water and moves its caput from side to side. The flamingo�s tongue is very large and information technology is moved to the back of the mouth to suck in water containing the nutrient. The tongue is so pushed forward to push out the water just the nutrient is trapped in the fine hairs effectually the beak. The trapped food is then swallowed. The flamingo�s diet includes small shrimps which are pinkish. This pinkish colour moves into the flamingo�s feathers, giving them the same pink color.

Liquid feeders

Some animals feed just on liquids and therefore need to suck their food. The female person mosquito feeds on blood. The mouthparts are very long and thin and able to be pushed into the skin of the victim without being felt. The butterfly drinks nectar from flowers. Information technology has a very long mouthpart called a proboscis. This tube is coiled nether its head when it is flight and can exist extended when information technology feeds.

Humming Bird, Amazon Rainforest, Republic of peru

Humming birds are pocket-size birds with long beaks and a long natural language. They as well drink the nectar from flowers. Aphids put their thin but stiff, pointed mouthparts into the stems of plants to suck the plants� food. The housefly has a proboscis shaped like the stop of a vacuum cleaner. It uses it to suck the juices from the nutrient which information technology walks over.

Source: https://www.saburchill.com/chapters/chap0015.html

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