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11 questions · timed · auto-graded

Question 11 Mark
________ probably lived in East African grasslands about 2 mya.
Answer
Australopithecus probably lived in East African grasslands about 2 mya.
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Question 21 Mark
The brain capacities of Homo habilis was about ________cc.
Answer
The brain capacities of Homo habilis was about 650-800 cc.
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Question 51 Mark
De Vries believed that single step large mutation, called caused speciation.
Answer
De Vries believed that single step large mutation, called Saltation caused speciation.
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Question 61 Mark
About 65 mya, suddenly disappeared from the earth.
Answer
About 65 mya, Dinosaurs suddenly disappeared from the earth.
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Question 81 Mark
Placental mammals and marsupial mammals of Australia show evolution.
Answer
Placental mammals and marsupial mammals of Australia show Convergent evolution.
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Question 91 Mark
A study of fossils in different sedimentary layers indicates the ______ period in which they existed.
Answer
A study of fossils in different sedimentary layers indicates the Geological period in which they existed.
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Question 101 Mark
Placental mammal lemur in Australia shows resemblance to the marsupial mammal, .
Answer
Placental mammal lemur in Australia shows resemblance to the marsupial mammal, Spotted Cuscus.
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Question 111 Mark
Complete the following sentences given below:
  1. The first mammals arose alongwith .
  2. The direct ancestor of modern man is .
  3. Primitive man who used stones to produce fire is .
Answer
  1. The first mammals arose alongwith Dinosaurs.
  2. The direct ancestor of modern man is Homo erectus.
  3. Primitive man who used stones to produce fire is Java apeman.
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Fill in the blanks - BIOLOGY STD 12 Science Questions - Vidyadip