Reptiles are characterized by the presence of scales, which help in protection and water retention.

Reptiles typically have a three-chambered heart, except for crocodilians which have a four-chambered heart.

Reptiles (Reptilia) are known for having scales and typically lay eggs on land, adapting to terrestrial life.

Class Aves (birds) are warm-blooded, maintaining a constant body temperature.

Class Aves is characterized by the presence of feathers, which are unique to birds.

White blood cells, or leukocytes, are the key players in the immune response, helping to defend the body against infections.

White blood cells (leukocytes) are responsible for the immune response, helping to fight infections and foreign substances.

CH3COOH (acetic acid) is a carboxylic acid, containing the -COOH functional group.

Acetone is a ketone, which contains a carbonyl group (C=O) bonded to two carbon atoms.

Hexane is a saturated hydrocarbon, containing only single bonds between carbon atoms.

Propane is a saturated hydrocarbon, containing only single bonds between carbon atoms.

Acetic acid is the main component of vinegar, giving it its characteristic sour taste.

Blood is a connective tissue that is responsible for the transport of nutrients, gases, and waste products throughout the body.

Adipose tissue stores fat in the body.

Blood is a connective tissue that transports nutrients, gases, and waste products throughout the body.

Tubal ligation is a surgical procedure that permanently prevents pregnancy by blocking the fallopian tubes.

A diode is used to convert alternating current (AC) to direct current (DC) by allowing current to flow in one direction.

Scurvy is caused by a deficiency of Vitamin C, leading to symptoms like bleeding gums and weakness.

Sodium has the atomic number 11, indicating it has 11 protons.

Hydrogen has the atomic number 1.

The element with atomic number 6 is Carbon (C).

Calcium has the highest atomic number (20) among the first 20 elements.

Fluorine has the highest electronegativity.

Francium has the lowest electronegativity among the given elements.

Uranium-235 is commonly used as fuel in nuclear reactors due to its ability to sustain a chain reaction.

Chlorine is found in Group 17, also known as the halogens.

Aluminium commonly exhibits a stable +3 oxidation state in its compounds.

The symbol 'Fe' stands for Iron, derived from its Latin name 'Ferrum'.

The symbol 'K' represents Potassium, derived from its Latin name 'Kalium'.

Restriction endonucleases are used to cut DNA at specific sequences, which is essential for DNA cloning.