FREE NEET Biology Practice MCQ Test: Biodiversity And Conservation Exercise 3 Questions Answers With Detailed Explanations [PDF]

Answer: (c)

Answer: (c)

Answer: (a)

The tropical Amazonian rainforests in South America possess the greatest biodiversity on earth with more than 40,000 species of plants, 3,000 of fishes, 1300 birds, 427 of mammals, 427 of amphibians, 378 of reptiles and more than 1, 25,000 invertebrates.

Answer: (c)

Answer: (c)

Indri-indri lemur is found in Madagascar. It is the largest of all surviving lemurs and is best known for its beautiful song which can carry for more than 2 km. Today, the Indri's number is small and dwindling due to habitat loss.

Answer: (b)

Answer: (a)

Answer: (b)

Answer: (d)

Answer: (a)

Tiger is not resident in Gir national park. Gir has a large population of marsh crocodile or mugger, which is among the 40 species of reptiles and amphibians recorded in the sanctuary. According to official census figures, Girhas about 300 lions and 300 leopards, making it one of the major big-cat concentrations in India. Sambar and spotted deer (chital), blue bull (nilgai), chousingha (the world’s only four-horned antelope), chinkara (Indian gazelle) and wild boar thrive in Gir. Jackal, striped hyena, jungle cat, rusty-spotted cat, langur, porcupine, black-naped Indian hare are among the other mammals of Gir.

Answer: (c)

Answer: (a)

Migratory species perform cyclical movements between two distinct geographical areas, one of which is usually the area in which they breed. These species present special preservation challenges because their conservation may need international cooperation when they require habitats or environments in different countries where they migrate to survive.

Answer: (a)

Answer: (a)

Endemic species is confined to a particular area due to special type of adaptation according to that region.

Answer: (d)

Answer: (c)

Answer: (a)

Rauwolfia vomitoria is the source of active chemical drug reserpine, that is prescribed in hypertension, which actsas transquilliser. Datura is a plant with hallucinogenic properties. Drug belladonna is obtained from Atropabelladonna and drug. Opium is obtained from Papaversomniferum.

Answer: (a)

The Lemurs are the inhabitants of Madagascar and the Comoro Islands.

Answer: (d)

Pigeon is not an example of recent extinction because extinction is a natural phenomenon in which a species goes extinct if it is not able to adapt to changes in it's environment, or compete effectively with other organisms. Examples of recent extinctions include dodo (Mauritius), quagga (Africa), Steller's sea cow (Russia), thylacine (Australia) and three subspecies of tiger (Bali, Java, Caspian).

Answer: (c)