Which one of the following sequences was proposed by Darwin and Wallace for organic evolution?
1. | Overproduction, variations, constancy of population size, natural selection |
2. | Variations, constancy of population size, overproduction, natural selection |
3. | Overproduction, constancy of population size, variations, natural selections |
4. | Variations, natural selection, overproduction, constancy of population size |
To unlock all the explanations of this course, you need to be enrolled.
To unlock all the explanations of this course, you need to be enrolled.
Given below are four statements (A-D) each with one or two blanks. Select the option which correctly fills up the blanks in two statements
Statements:
(A) | Wings of butterflies and birds look alike and are the results of , evolution |
(B) | Miller showed that CH4, H2, NH3, and , when exposed to electric discharge in a flask resulted in the formation of . |
(C) | Vermiform appendix is a organ and an evidence pf evolution. |
(D) | According to Darwin evolution took place due to and of the fittest. |
Options:
1. | (A) - (i) convergent, (B) - (ii) oxygen, (ii) nucleosides |
2. | (B) - (i) water vapour, (ii) amino acids, (C) - (i) rudimentary (ii) anatomical |
3. | (C) - (i) vestigial, (ii) anatomical, (D) - (i) mutations, (ii) multiplication |
4. | (D) - (i) small variations, (ii) survival, (A) - (i) convergent |
To unlock all the explanations of this course, you need to be enrolled.
To unlock all the explanations of this course, you need to be enrolled.