Human Evolution Welcome to your Human Evolution 1. The theory of Natural selection was proposed by Darwin Wallace Lamarck Mendel2. Which one of the following is not a vestigial part in human beings? Segmental muscles of abdomen Coccyx Third molar on each side in each jaw Finger nails3. The first scientist who proposed his theory of evolution was Wallace Lamarck Darwin Mendel4. Lamarckism cannot explain Weak muscles in the son of a wrestler Long, narrow, limbless body of snakes Heterophylly Webbed toes in aquatic birds5. During a study session about evolution, one of your fellow students remarks, "The giraffe stretched its neck while reaching for higher leaves; its offspring inherited longer necks as a result". To correct your friend's misconception Characteristics acquired during an organism's life are not passed on through genes Overproduction of offspring leads to a struggle for survival Spontaneous mutations can result in the appearance of new traits Only favourable adaptations have survival value6. The extinct human who lived 1,00,000 to 40,000 years ago in Europe, Asia and parts of Africa, with short stature, heavy eye brows, retreating forehead, large jaws with heavy teeth, stocky bodies, a lumbering gait and stooped posture was Cro-Magnon humans Homo habilis Ramapithecus Neanderthal human7. The cranial cavity of the modern man was 1300-1600 c.c 600-900 c.c 450-650 c.c 900-1000 c.c8. The extinct human ancestor who ate only fruits and hunted with stone weapons was Australopithecus Homo erectus Ramapithecus Dryopithecus9. The prehistoric man which lived on Earth during late Pleistocene period was Australopithecus Neanderthal man Atlantic man Peking man10. The brain capacity of Homo erectus was about 1200 c.c 900 c.c 650 c.c 1600 c.c11 out of 10Please fill in the comment box below.
