18 Questions
What is the primary function of the teeth in the mouth?
To reduce the food into bits by tearing, cutting and grinding
How many permanent teeth do humans have, excluding the wisdom tooth?
28
What is the name of the last molar in each jaw that may erupt between 17 and 25 years of age?
Wisdom tooth
How many types of teeth are there in humans?
Two
What is the shape of incisors?
Chisel-shaped
How many temporary teeth do humans have?
20
What is the purpose of the collar cells in sponges?
To beat flagella and capture tiny food particles
Where does digestion take place in protozoa?
In the food vacuole
What type of digestive system is characteristic of coelenterates?
Both intracellular and extracellular digestion
In what type of animals does digestion occur within the cell?
Porifera and protozoa
What is the function of the gastrovascular cavity in coelenterates?
To serve as an incomplete digestive tube
Where does digestion take place in platyhelminthes?
Extracellularly
What is the function of the prostomium or lips in the mouth of Annelida?
Grasping food
What is the function of the calciferous glands in the esophagus of Annelida?
Secretion of calcium carbonate
What is the function of the pharynx in Annelida?
Facilitates sucking in of food
What is the function of the horny teeth in the mouth of some Mollusca?
Rasping off food particles
What is the function of the gizzard in Annelida?
Grinding of food with the help of sand
What is the site of digestion and absorption in Annelida?
Intestine
Learn about the digestive system of echinoderms, including starfish and sea urchins, and arthropods, including lobsters and spiders. Understand how they process food and excrete waste.
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