Lichens can be used as air pollution indicators, especially of the concentration of sulfur dioxide in the atmosphere. Air pollutants dissolved in rainwater, especially sulfur dioxide, can damage lichens, and prevent them from growing. This makes lichens natural indicators of air pollution.

Correct Option: B

Lichens can be used as air pollution indicators, especially of the concentration of sulfur dioxide in the atmosphere. Air pollutants dissolved in rainwater, especially sulfur dioxide, can damage lichens, and prevent them from growing. This makes lichens natural indicators of air pollution.

Lactogenic hormone is gonadotropic hormone which is secreted by the anterior pituitary. In females, it stimulates growth of the mammary glands and lactation after parturition.

Correct Option: D

Lactogenic hormone is gonadotropic hormone which is secreted by the anterior pituitary. In females, it stimulates growth of the mammary glands and lactation after parturition.

Phototropism is the growth of organisms in response to light. In plants, phototropism is a response to blue wavelengths of light and is caused by a redistribution of auxin from the illuminated side to the darker side of the shoot, resulting in quicker growth on the darker side and bending of the shoot toward the source of light.

Correct Option: A

Phototropism is the growth of organisms in response to light. In plants, phototropism is a response to blue wavelengths of light and is caused by a redistribution of auxin from the illuminated side to the darker side of the shoot, resulting in quicker growth on the darker side and bending of the shoot toward the source of light.

Producers → Consumers → Decomposers.

Correct Option: C

Producers → Consumers → Decomposers.

Rinderpest is an acute, highly contagious viral disease of ruminant animals, primarily cattle, that was once common in Africa, the Indian subcontinent, and the Middle East.

Correct Option: C

Rinderpest is an acute, highly contagious viral disease of ruminant animals, primarily cattle, that was once common in Africa, the Indian subcontinent, and the Middle East.