The Laws of Heredity are few; their implications for life are vast. The simplest genetic characteristics are those whose presence depends on the genotype at a single locus; i.e., one gene controls the expression of one characteristic. Such characters are known as Mendelian, after their original discoverer, the Austrian botanist Gregor Mendel. Over 10,000 Mendelian characters have been identified in humans. Mendelian laws of inheritance are statements about the way certain characteristics are transmitted from one generation to another in an organism.

Correct Option: B

The Laws of Heredity are few; their implications for life are vast. The simplest genetic characteristics are those whose presence depends on the genotype at a single locus; i.e., one gene controls the expression of one characteristic. Such characters are known as Mendelian, after their original discoverer, the Austrian botanist Gregor Mendel. Over 10,000 Mendelian characters have been identified in humans. Mendelian laws of inheritance are statements about the way certain characteristics are transmitted from one generation to another in an organism.

Lepisma saccharina, frequently called a silverfish or fishmoth is a small, wingless insect in the order Thysanura. Silverfish are always wingless and are silvery to brown in colour because their bodies are covered with fine scales. They are generally soft bodied. Its common name derives from the animal’s silvery light grey and blue colour, combined with the fish-like appearance of its movements, while the scientific name indicates the silverfish’s diet of carbohydrates such as sugar or starches.

Correct Option: A

Lepisma saccharina, frequently called a silverfish or fishmoth is a small, wingless insect in the order Thysanura. Silverfish are always wingless and are silvery to brown in colour because their bodies are covered with fine scales. They are generally soft bodied. Its common name derives from the animal’s silvery light grey and blue colour, combined with the fish-like appearance of its movements, while the scientific name indicates the silverfish’s diet of carbohydrates such as sugar or starches.

Chondrichthyes or cartilaginous fishes are jawed fish with paired fins, paired nares, scales, a twochambered heart, and skeletons made of cartilage rather than bone. The cartilaginous fish are so named because their skeleton is composed of cartilage which is not reinforced by the minerals that make bone. It includes elasmobranchs: sharks, rays and skates, etc.

Correct Option: B

Chondrichthyes or cartilaginous fishes are jawed fish with paired fins, paired nares, scales, a twochambered heart, and skeletons made of cartilage rather than bone. The cartilaginous fish are so named because their skeleton is composed of cartilage which is not reinforced by the minerals that make bone. It includes elasmobranchs: sharks, rays and skates, etc.

Mammals are members of class Mammalia, airbreathing vertebrate animals characterized by the possession of endothermy, hair, three middle ear bones, and mammary glands functional in mothers with young. Most mammals also possess sweat glands and specialized teeth. The largest group of mammals, the placentals, have a placenta which feeds the offspring during gestation. Among the mammals, pigs, hippopotamus, camels, giraffe, deer, antelope, cattle, sheep, goats belong to Order Artiodactyla; Order Cetacea: whales, dolphins and porpoises; etc. Mammals range in size from the 30–40 millimeter (1to 1.5-inch) bumblebee bat to the 33-meter (108foot) blue whale.

Correct Option: D

Mammals are members of class Mammalia, airbreathing vertebrate animals characterized by the possession of endothermy, hair, three middle ear bones, and mammary glands functional in mothers with young. Most mammals also possess sweat glands and specialized teeth. The largest group of mammals, the placentals, have a placenta which feeds the offspring during gestation. Among the mammals, pigs, hippopotamus, camels, giraffe, deer, antelope, cattle, sheep, goats belong to Order Artiodactyla; Order Cetacea: whales, dolphins and porpoises; etc. Mammals range in size from the 30–40 millimeter (1to 1.5-inch) bumblebee bat to the 33-meter (108foot) blue whale.

The glass lizards or glass snakes, genus Ophisaurus, are a group of reptiles that resemble snakes, but are actually lizards. Although most species have no legs, their head shape and the fact that they have movable eyelids and external ear openings identify them as lizards. A few species have very small stub-like legs near the rear vent. These are vestigial organs meaning they have evolved and they are no longer in use. These animals are also known as Glass Snakes or Jointed Snakes.

Correct Option: A

The glass lizards or glass snakes, genus Ophisaurus, are a group of reptiles that resemble snakes, but are actually lizards. Although most species have no legs, their head shape and the fact that they have movable eyelids and external ear openings identify them as lizards. A few species have very small stub-like legs near the rear vent. These are vestigial organs meaning they have evolved and they are no longer in use. These animals are also known as Glass Snakes or Jointed Snakes.