Which one of the following statements is true regarding digestion and absorption of food in humans?

Chylomicrons are small lipoprotein particles that are transported from intestine into blood capillaries

Oxyntic cells in our stomach secrete the proenzyme pepsinogen

Fructose and amino acids are absorbed through intestinal mucosa with the help of carrier ions like $N{a^ + }$

The correct Option is "Chylomicrons are small lipoprotein particles that are transported from intestine into blood capillaries"

About 60% of starch is hydrolysed by salivary amylase in our mouth

The given schematic diagram diepicts heterodont teeth and its thecodont arrangement. Find the correct labelling for A-D from the options given below

A-Molar, B-Premolar, C-Canine, D-Incisor. Incisors teeth have chisel like edge thus, also called as cutting teeth, while canines are pointed and lies behind the cutting teeth. They are used for cutting and tearing. Premolar and molars are called check teeth. They are broad and are used to crush the food. Third molar of human being is called wisdom teeth

A-Incisor, B-Canine, C-Premolar, D-Molar

The correct Option is "A-Molar, B-Premolar, C-Canine, D-Incisor"

A-Incisors, B-Premolar, C-Canine, D-Molar

A-Molar, B-Premolar, C-Incisor, D-Canine

Which of the following is not a function of liver?

Insulin is a hormone, produced by $\beta $-cells of islets of Langerhans of pancreas.

The correct Option is "Production of insulin"

Choose the incorrect statement regarding human digestive system with reference to a normal person

There are three pair of salivary glands in human being namely, paratoid glands, sublingual glands and submaxillary glands. All of the three pairs of glands secretes saliva into buccal cavity through their ducts. About 1000-1500 mL of saliva is secreted per day by an adult person

Human saliva is slightly acidic

The correct Option is "In human being, four pair of salivary gland secretes saliva"

The quantity of saliva in adult man may be-1 to 1.5 L day

Enzyme amylase present in saliva is responsible for the break down of starch into simple sugar

What type of teeths are absent in rabbit?

Dental formula of rabbit is $\;\frac{{2033}}{{1023}}\; \times 2 = 28.$ Canines are absent in rabbit.

The correct Option is "Canines"

Which one is correctly matched?

Vitamin-${B_{12}}$(Cyanocobalamin) is required for RBCs maturation, DNA synthesis, myelin formation. It acts as coenzyme. Its deficiency causes pernicious anaemia. Best source of vitamin-${B_{12}}$ are fish, liver, eggs, milk, colon bacteria.

The correct Option is "Vitamin –${B_{12}}$ - Cyanocobalamin"

Nutritional disorder, keratomalacia is caused by the deficiency of vitamin

Retinol, is a chemical name of vitamin-A. Deficiency of vitamin-A in diet causes night blindness and xerophthalmia. The later may lead to advanced stage, which is characterised by keratinised cornea

The correct Option is "Retinol"

How many human teeth appear twice during the life span of an individual?

In human, 20 teeth (incisor, canine, premolar) are diphyodont, i.e., grow twice in life and 12 teeth (molars) are monophyodont, i.e., grow once in life.

What is the correct dental formula of rat?

Dental formula is the number of teeth one half of upper jaw divided by teeth one half of lower jaws. Rat dental formula $\frac{{1003}}{{1003}} = 16$

${\rm{I}}\frac{2}{2}{\rm{C}}\frac{1}{1}{\rm{PM}}\frac{2}{2}{\rm{M}}\frac{3}{3}$

${\rm{I}}\frac{2}{1}{\rm{C}}\frac{1}{1}{\rm{PM}}\frac{2}{2}{\rm{M}}\frac{3}{3}$

${\rm{I}}\frac{1}{2}{\rm{C}}\frac{2}{1}{\rm{PM}}\frac{2}{2}{\rm{M}}\frac{3}{3}$

The correct Option is "${\rm{I}}\frac{1}{1},{\rm{C}}\frac{0}{0},{\rm{PM}}\frac{0}{0},{\rm{M}}\frac{3}{3}$"

The cells, which destroy worn out white and red blood cells, bacteria and micro-organisms passing from the liver are

Kupffer’s cells of liver are phagocytic cells, which destroy worn out white and red blood corpuscles, bacteria and micro-organisms passing from the liver.