Read the following statements w.r.t. humans and choose the correct option.
a. Enamel is the hardest tissue of the body.
b. The upper and lower surface of tongue has papillae.
c. The tongue is attached to the floor of oral cavity by the frenulum.
d. The pyloric portion of stomach opens into the first part of small intestine.

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Solution

Answer (3)
Enamel is the hardest substance while bone is the hardest tissue in the human body. The upper surface of tongue has papillae.

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Which of the following is the correct sequence of parts as they occur in the human alimentary canal ?

(a) Mouth $\to$ Stomach $\to$ Small intestine $\to$ Oesophagus $\to$ Large intestine
(b) Mouth $\to$ Oesophagus $\to$ Stomach $\to$ Large intestine $\to$ Small intestine
(c) Mouth $\to$ Stomach $\to$ Oesophagus $\to$ Small intestine $\to$ Large intestine
(d) Mouth $\to$ Oesophagus $\to$ Stomach $\to$ Small intestine $\to$ Large intestine

Q. Tongue is attached to floor of oral cavity by

^{'} A^{'} - - -

and has small projections on upper surface called

^{'} B^{'} - - -

. Identify A & B and choose the correct option.

Question 14
Mark the following statements as True or False. If false, write the correct statements.

(a) Tongue is attached to the roof of the mouth cavity at the back.
(b) The large intestine is longer and wider than the small intestine of the human alimentary canal.
(c) Mucus protects the stomach lining from damage.
(d) All heterotrophs have a similar basic process of nutrition.

Q. Consider the following statement regarding human.
a. Duodenum is the longest part of small intestine
b. Hepatic and cystic ducts release their secretions into common bile duct whose opening is controlled by sphincter of Oddi
c. Ileocaecal valve is present at the junction of small intestine and large intestine
d. Mechanical digestion and chemical digestion of food occurs in buccal cavity, stomach and small intestine
Which of the following choices is correct?

Q. The tongue is attached to the floor of the oral cavity by

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Answer (3) Enamel is the hardest substance while bone is the hardest tissue in the human body. The upper surface of tongue has papillae.

Answer (3)
Enamel is the hardest substance while bone is the hardest tissue in the human body. The upper surface of tongue has papillae.