Which one of the following is the best example of convergent evolution and similarity due to it?
(a) Wing structure of bat and bird
(b) Trunk of elephant and body of whale
(c) Chameleon and shark
(d) Light organs and changes in arrangement of eyes—Anglerfish
(a) Wing structure of bat and bird
Explanation:
The wing structure of bats (mammals) and birds (aves) is an example of convergent evolution. Though these animals belong to different classes, the wings have evolved independently to serve a similar function (flight) to adapt to their environment, leading to analogous organs with similar functions but different origins.
More WBBSE Easy level questions
What is his first observation of Darwin in his theory related with evolution?
Which of the following is a feature of Equus? (a) Three digits with hoof on each forelimb and hindlimb (b) Four digits with hoof on each forelimb and two digits with hoof on each hindlimb (c) Two digits with hoof on each forelimb and hindlimb (d) One digit with hoof on each forelimb and hindlimb
Which of the following is not a tenet of Darwinism? (a) Struggle for existence (b) Variation (c) Natural selection (d) Inheritance of acquired character
Equus possessed 4 digits in the forelimb and three digits in the hindlimb
Ontogeny repeats ____
Which of the following is an inference of Darwin's theory of evolution? (a) Natural Selection (b) Variation (c) Prodigality of reproduction (d) Food and Space is constant
Which theory can be reached from the comparative study of the embryos of different vertebrate animals?
Which reactants were used in the experiment of Miller and Urey regarding the chemical origin of life? (a) Oxygen, Methane, Nitrogen dioxide (b) Water, Methane, Ammonia, Hydrogen (c) Methane, Hydrogen sulphide, Carbon monoxide (d) Nitrous oxide, Methane, Carbon dioxide
Identify the features of homologous organs- (a) Different by structure but identical by origin and function (b) Different by origin and function but identical by structure (c) Different by origin but identical by structure and function (d) Identical by origin and structure but different by function
Write three inferences deduced from the observations as mentioned in Darwin’s theory of origin of new species by natural selection with the help of a table. Explain the problem-solving ability of Chimpanzee regarding procurement of food. [3 + 2]
Explain how the features of digits have changed in the course of evolution of horse.
Column–A Column–B 2.13. ADH (a) Decline in Wetland 2.14. Amitosis (b) Convergent Evolution 2.15. Thalassaemia (c) Palash (Flame of the forest) 2.16. Analogous organ (d) Spindle fibre is not formed 2.17. Increase in human population (e) Decreases the volume of urine through reabsorption of water from the distal convoluted tubule of nephron 2.18. Ontholiphonus flower of Paddy (f) Paddy (g) Recessive Mutant gene located on Autosome
