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प्रश्न
Give reasons for the following.
Meat eating animals have strong canines.
उत्तर
Meat eating animals have strong canines as they have to tear the flesh.
Meat eating animals like dogs, wolves, and lions eat raw meat by tearing it so they have sharp canines.
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संबंधित प्रश्न
The inner wall of the small intestine has many finger-like outgrowths called ______.
Define a nutrient. Name four important nutrients present in our food.
Which of the following is the correct sequence of parts as they occur in the human alimentary canal?
(a) Mouth → Stomach → Small intestine → Oesophagus → Large intestine
(b) Mouth → Oesophagus → Stomach → Large intestine → Small intestine
(c) Mouth → Stomach → Oesophagus → Small intestine → Large intestine
(d) Mouth → Oesophagus → Stomach → Small intestine → Large intestine
When a person puts food in his mouth, then teeth cut it into small pieces, chew and grind it. The glands A in the mouth secrete a substance B which is mixed with the food by tongue. The substance B contains an enzyme C which starts the digestion of food in the mouth. The slightly digested food from the mouth goes down a tube D. The special type of movements E in the walls of tube D push the food into stomach for further digestion. The stomach wall secretes gastric juice containing three substance F, G and H. One of the functions of F is to kill bacteria which may enter the stomach with food. The substance G protects the inside layer of stomach from the damaging effect of substance F whereas substance H is and enzyme for digestion. The partially digested food then enters into small intestine for further digestion.
(a) What is (i) gland A (ii) substance B, and (iii) enzyme C?
(b) Name the tube D.
(c) What is the movement E known as?
(d) What are (i) F (ii) G, and (iii) H?
Fill in the blank.
The _______ are used for tearing the food.
Define with examples: Herbivores
The digestive glands associated with the alimentary canal are ______.
______ is the vestigeal organ in human.
What are villi?
How does tooth enamel get corroded? What is the preventive measure for this?
