Answer the following.
A. Write the function of each and their number in human body.
a) Incisors
b) Canines
c) Premolars
d) Molars
B. With the help of diagrams explain the ingestion of food in amoeba and hydra.
C. Differentiate between milk teeth and permanent teeth.
D.Explain the digestion of food in stomach and small intestine.
E.How does cud get digested in ruminant’s stomach. Explain?
Q6. Draw and label the diagram with the help of given hints:
a) The organ for intake of food.
b) The pipe like structure that takes the food from mouth to stomach.
c) Largest gland of the body.
d) The J-shaped bag that collects and digests the food.
e) The organ that secretes pancreatic juice.
f) The part of alimentary canal where water from undigested food is absorbed.
g) The part of alimentary canal where food is absorbed.
h) A part of large intestine considered to be vestigial
i) The opening in the rectum from where the undigested food is egested.
Answers
Answer:
good night friends
Answer: A) Incisors – The four front teeth in both the upper and lower jaws are called incisors.
Their primary function is to cut food.
Canines – There are four canines in the oral cavity. They are behind and adjacent to the lateral incisors.
Their main function is to tear food.
Premolars – These teeth are located behind and adjacent to the canines and are designed to crush food. There are eight premolars in the oral cavity.
Molars – The most posterior teeth in the mouth are the molars. They are designed to grind food.
B) The pseudopodia join together to form a small cavity known as a food vacuole. The food inside the vacuole is digested by digestive juices. It is absorbed and assimilated there to provide energy and perform other functions.
C) Milk Teeth:
- Root canals have a more hour-glass-like appearance
- A larger pulp chamber
- Enamel and dentine are less mineralized
- less regular
Permanent Teeth:
- Root canals have a well-defined appearance with more branches
- A smaller pulp chamber
- Enamel and dentine are more mineralized
- more regular