Consider the following statements regarding Neanderthal man:
I. Neanderthal man had a brain size of approximately 1400 cc. II. They lived in the Near East and Central Asia between 1,00,000–40,000 years back. III. They used hides to protect their bodies and buried their dead. IV. Neanderthals arose in Africa and then moved across continents.
Which of the statements are correct?
Explanation: Statements I, II, and III are correct. Statement IV is incorrect because Homo sapiens, not Neanderthals, arose in Africa and later spread across continents.
Question 82 of 100
📘 CLASS XII
Review the origin and cultural milestones of Homo sapiens:
I.Homo sapiens arose in Africa, moved across continents, and split into distinct races. II. Modern Homo sapiens arose during the ice age between 75,000–10,000 years ago. III. Pre-historic cave art developed about 10,000 years ago, coinciding with the rise of agriculture. IV. Agriculture and human settlements started around 10,000 years ago.
Select the option with correct statements:
Explanation: Statements I, II, and IV are correct. Statement III is incorrect because pre-historic cave art developed about 18,000 years ago, whereas agriculture and permanent settlements began around 10,000 years ago.
Question 83 of 100
📘 CLASS XII
Read the statements below regarding prehistoric human art and archaeological sites:
I. Pre-historic cave paintings by early humans can be observed at the Bhimbetka rock shelter. II. The Bhimbetka rock shelter is located in the Raisen district of Madhya Pradesh. III. These cave paintings were made by Neanderthal man around 40,000 years back.
Which statements are correct?
Explanation: Statements I and II are correct. Statement III is incorrect because the cave art was made by pre-historic Homo sapiens about 18,000 years ago, not Neanderthals.
Question 84 of 100
📘 CLASS XII
Match the hominids to their corresponding brain capacities:
I.Homo habilis — 900 cc II.Homo erectus — 900 cc III. Neanderthal man — 1400 cc IV.Australopithecus — 1400 cc
Which of the above are correctly matched?
Explanation: Homo erectus (900 cc) and Neanderthal man (1400 cc) are correctly matched. Homo habilis has a brain capacity of 650–800 cc, while Australopithecines had a much smaller cranial capacity.
Question 85 of 100
📘 CLASS XII
Regarding primate similarities and cranial morphology, analyze the following:
I. Comparison of skulls reveals that the skull of a baby chimpanzee is more like an adult human skull than an adult chimpanzee skull. II. An adult chimpanzee skull is structurally closer to an adult human skull than a baby chimpanzee's skull is. III. The evolutionary history of modern man appears to parallel the evolution of the human brain and language.
Which of the statements are correct?
Explanation: Statements I and III are correct. Statement II is incorrect because the baby chimpanzee skull shows a closer resemblance to the adult human skull than the adult chimpanzee skull does.
Question 86 of 100
📘 CLASS XII
Arrange the following human ancestors in the correct chronological sequence of their evolutionary appearance (from oldest to newest):
I.Australopithecus II.Homo habilis III.Homo erectus IV. Neanderthal man V.Ramapithecus
Select the correct order:
Explanation: The correct evolutionary sequence is: Ramapithecus (~15 mya) → Australopithecus (~2 mya) → Homo habilis (~2 mya) → Homo erectus (~1.5 mya) → Neanderthal man (~100,000–40,000 years ago).
Question 87 of 100
📘 CLASS XII
Evaluate the dietary preferences of hominid ancestors:
I.Australopithecines essentially ate fruits. II.Homo habilis probably did not eat meat. III.Homo erectus probably ate meat.
Which of the statements are correct?
Explanation: All three statements are correct. Australopithecus and Homo habilis were primarily fruit/plant eaters, whereas Homo erectus probably included meat in its diet.
Question 88 of 100
📘 CLASS XII
Consider the following statements regarding the Big Bang and the origin of the universe:
I. The universe is almost 20 billion years old. II. The Big Bang theory attempts to explain the origin of the universe. III. Condensed gases under gravitation formed the galaxies of the present-day universe. IV. In the Milky Way galaxy, Earth was formed about 4.5 billion years ago.
Which of the statements are correct?
Explanation: Statement I is incorrect because the universe is approximately 13.8 billion years old. Statements II, III, and IV are correct.
Question 89 of 100
📘 CLASS XII
Evaluate these statements concerning early Earth's atmosphere:
I. There was a thick, protective ozone-rich atmosphere on the very early Earth. II. Water vapour, methane, carbon dioxide, and ammonia covered the early molten surface. III. UV rays from the sun broke up water into hydrogen and oxygen, and the heavier hydrogen escaped. IV. Oxygen combined with ammonia and methane to form water, carbon dioxide, and other molecules.
Select the correct statements:
Explanation: Statement I is incorrect because there was no atmosphere on early Earth. Statement III is incorrect because when water was broken down by UV rays, the lighter hydrogen gas escaped, not the heavier gas. Statements II and IV are correct.
Question 90 of 100
📘 CLASS XII
Read the statements below regarding Panspermia and Spontaneous Generation:
I. Early Greek thinkers thought units of life called spores were transferred to different planets, including Earth. II. Panspermia is still a favorite idea for some astronomers. III. Spontaneous generation theory proposed that life arose from pre-existing spores in pre-sterilised flasks.
Which of the statement(s) is/are correct?
Explanation: Statements I and II are correct. Statement III is incorrect because spontaneous generation claimed that life arose from decaying and rotting matter, a theory later disproved by Louis Pasteur.