A thump of either a single hind leg or both together shows the rabbit’s fear or displeasure over something. In any case, it shows the identification of some danger in the vicinity by the rabbit. The rabbit feels threatened by a danger, and warns the rest of his warren.

Correct Option: C

A thump of either a single hind leg or both together shows the rabbit’s fear or displeasure over something. In any case, it shows the identification of some danger in the vicinity by the rabbit. The rabbit feels threatened by a danger, and warns the rest of his warren.

Carnivorous or insectivorous plants grow in places where the soil is thin or poor in nutrients, especially nitrogen, such as acidic bogs and rock outcroppings. In this habitat, plants that have alternative strategies for obtaining essential minerals are at a competitive advantage. The capture of insects provides such plants with a supplemental source of essential nutrients.

Correct Option: A

Carnivorous or insectivorous plants grow in places where the soil is thin or poor in nutrients, especially nitrogen, such as acidic bogs and rock outcroppings. In this habitat, plants that have alternative strategies for obtaining essential minerals are at a competitive advantage. The capture of insects provides such plants with a supplemental source of essential nutrients.

Jacobson’s organ, also called vomeronasal organ, is a patch of sensory cells within the main nasal chamber that detects heavy moisture-borne odour particles. It is a “sense of smell” receptor that is actually not receptive to ordinary odors.

Correct Option: C

Jacobson’s organ, also called vomeronasal organ, is a patch of sensory cells within the main nasal chamber that detects heavy moisture-borne odour particles. It is a “sense of smell” receptor that is actually not receptive to ordinary odors.

Wings of birds and insects are analogous structures used for flight in both types of organisms. But, they have no common ancestral origin at the beginning of their evolutionary development. They show similar function but show no similar structural relationship.

Correct Option: D

Wings of birds and insects are analogous structures used for flight in both types of organisms. But, they have no common ancestral origin at the beginning of their evolutionary development. They show similar function but show no similar structural relationship.

Carotenes are photosynthetic pigments that are responsible for the orange colour of the carrot, for which this class of chemicals is named. Some carrots are yellow due to Anthocyanins. Carotenes are also responsible for the orange (but not all of the yellow) colours in dry foliage.

Correct Option: A

Carotenes are photosynthetic pigments that are responsible for the orange colour of the carrot, for which this class of chemicals is named. Some carrots are yellow due to Anthocyanins. Carotenes are also responsible for the orange (but not all of the yellow) colours in dry foliage.