Column-I | Column-II | ||
a. | Australopithecines | (i) | Probably ate meat |
b. | Homo erectus | (ii) | Walked like gorillas |
c. | Neanderthal man | (iii) | Hunted with stone weapons but essentially ate fruits |
d. | Ramapithecus | (iv) | (iv) Lived in near east and central Asia |
(a) | Seed ferns are common ancestors for Gnetales and cycads. |
(b) | Zosterophyllum are avascular land plants that evolved in the Silurian period. |
(c) | Lycopods are the oldest extant vascular land plants. |
(d) | Sphenopsids evolved from the group of plants to which Psilophyton belongs. |
Statement A: | Similarities in proteins and genes among diverse organisms indicates common ancestry. |
Statement B: | Humans and chimpanzees also show biochemical similarities. |
1. | Pre-existing advantageous mutations when selected will result in observation of new phenotypes |
2. | Exposure to antibiotics causes mutation that confer antibiotic resistance |
3. | Mutations are directional variations |
4. | All antibiotic resistant bacteria which exist today are result of artificial selection |
I: | the first form of life could have come from pre-existing non-living organic molecules (e.g. RNA, protein, etc.) |
II: | formation of life was preceded by chemical evolution, i.e., the formation of diverse organic molecules from inorganic constituents. |
III: | The conditions on earth were – high temperature, volcanic storms, reducing atmosphere containing CH4, NH3, etc. |
1. | Only I and II are correct. |
2. | Only I and III are correct. |
3. | Only II and III are correct. |
4. | I, II and III are correct. |