Nutrition in Animals

invertebrate, vertebrate, feeding method.

accumulated organic

cilia

mucous in their mouth and send them to their digestive tract.

These animals feed on deposits and live in deep sand of water.it has many feeding tentacles extended in different directions and covered with mucous. Tentacles capture the food and then send it to the mouth.

 Some kinds of hemi-chordate and some insects are examples for it.  Amphitrite: These animals feed on deposits and live in deep sand of water.  Amphitrite has many feeding tentacles extended in different directions and covered with mucous.  Tentacles capture the food and then send it to the mouth.

extended in different directions and covered with mucous and founded in Amphitrite, Tentacles capture the food and then send it to the mouth.

A. There are cutting regions in mouth of invertebrates to increase surface area of food to accelerate the digestion. B. Insects have chitinous teeth, tongue and absorption tubes. They involved in detection, grinding and absorption of food particles. Nereis from invertebrates has muscular pharynx supported by chitinous teeth. Pharynx extend out of body capture the food and take into the body quickly. C. Some vertebrates catch their prey strongly by their front extremities and paralyze them by poison secretion.

A. Incisors: They used in biting and cutting. B. Canines: They used in partition, especially meat fibers. C. Premolar: They used in chewing and grinding. D. Molars: They used in chewing and grinding.

for defense and attack.

A/ Herbivores have not canine teeth but have more developed molar teeth. Incisors in rodents grow continuously during their life span. But they corrode gradually to limit their size.

A/ That used to break the cellulosic wall of plant cell. This process facilitates the digestion of cellulose by microorganisms that live in their digestive system.

Because they get organic food materials from plants or other animals, but these food particles are not so small to pass through plasma membrane so its need digestion.

Frugivorus

(eating dead organic materials).

Ingested large food particles are broken down into their monomers and transported to the body cells by help of circulatory system, and pass through plasma membrane. Monomers like glucose are broken down by cellular respiration in cells, energy and heat release.

in these reactions monomers like glucose are broken down by cellular respiration in cells, energy and heat release.

1. Direct method. 2. Feeding on planktons. 3. Feeding on solid particles. 4. Feeding on liquids.

They are parasitic organisms get the ingested food in form of monomers from the host, for example tapeworm and some aquatic invertebrate animals get some food directly from water.

are tiny plants like (Phytoplankton) or animal like (Zooplanktons) tiny organisms which live in sea and oceans.

involved in cutting and grinding.

involved in cutting and grinding.

Some internal parasites absorb digested food of host organisms and some of them absorb blood through damaged wall of intestine.