Question

Read the following statements and find out the incorrect statements. $a$. Small intestine is distinguished into three regions—a $‘U’$ shaped duodenum, a long coiled middle portion jejunum and a highly coiled ileum.
$b$. Oesophagus opens into the cardiac part of stomach.
$c$. Arrangement of teeth in each half of upper and lower jaw is represented by dental formula.
$d$. Rectum is a small sac which hosts some symbiotic micro-organisms.

• A. $a$ and $d$
• B. $b$ and $d$
• C. $b$ and $c$
• D. $a$ and $c$

Answer 1

Answer: (A)

$a$. Small intestine is distinguished into three regions, a $‘C’$ shaped duodenum, a long coiled middle portion jejunum and a highly coiled ileum.
$d$. Caecum is a small blind sac which hosts some symbiotic micro-organisms