367: Which two countries follow China and India in the decreasing order of their populations ?
(a) Brazil and USA
(b) Canada and Malaysia
(c) USA and Indonesia
(d) Russia and Nigeria
Explanation:
Country: 1 People's Republic of China 2 India 3 United States 4 Indonesia 5 Brazil
369: With reference to the evolution of living organisms, which one of the following sequences is correct?
(a) Salamander - Python - Kangaroo
(b) Octopus - Dolphin - Shark
(c) Pangolin - Tortoise - Hawk
(d) Frog - Crab - Prawn
Explanation:
Salamander is.a common name of approximately 500 species of amphibians. The salamanders evolved from the Labrynthodonts, the first vertebrates to venture onto land in the Devonian period over 350 million years ago. Salamanders belong to the Order Caudata (Urodela). Caudata refers to the presence of a" tail, which salamanders retain even after metamorphosis. Salamanders apparently arose in the late Jurassic, 150 mya. The fossil Karuarus is the earliest
known salamander. Karaurus was small (120 mm svl) and apparently terrestrial because it had dermal sculpturing.
Python may refer to any member of the family Pythonidae (in general), a group of snakes found in Africa, Asia, Australia and a few islands in Oceania.
A kangaroo is a marsupial from the family Macropodidae (macropods, meaning 'large foot'). In common use the term is used to describe the largest species from this family, the Red Kangaroo, the Antilopine Kangaroo, and the Eastern and Western Grey Kangaroo of the Macropus genus. Kangaroos have few natural predators. The Thylacine, considered by palaeontologists to have once been a major natural predator of the kangaroo, is now extinct. Other extinct predators included the Marsupial Lion, Megalania and the Wonambi. However, with the arrival of humans in Australia at least 50,000 years ago and the introduction of the dingo about 5,000 years ago, kangaroos have had to adapt.
370: The Panda belongs to the same family as that of
(a) Cat
(b) Rabbit
(c) Bear
(d) Dog
Explanation:
Until recently, pandas were thought to be part of a subspecies between the raccoon and the bear family. Through genetic
testing, it has been found that pandas are indeed true bears of the Ursidae family. The pandas closest relative is the
spectacled bear of South America. Giant pandas are a very old species of animal, often referred to as a "living fossil", because they carry traits that only bears many centuries ago would have had.