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

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

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]

Give any two examples of probable struggle for existence among animals who might dwell in a tall tree having trunk cavities.

Show the major events of evolution with the help of a chart. What are the roles of air sacs in the flight of pigeon? [3 + 2]

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

What information related to evolution can be obtained from the discussion on comparative structure of hearts of different vertebrate groups ? Explain the following two terms in the light of Darwinism - (a) Survival of the fittest (b) Natural selection OR Explain the evolutionary significance of homologous and analogous organs with the help of example. What are the adaptive significances of air sacs of Pigeon ? [3+2=5]

Prepare a list of reactants used and products in the experiment of Miller and Urey regarding biochemical origin of life.

Match the words in Column A with the most appropriate words in Column B and rewrite the correct pair mentioning the serial no. of both columns (any five): [1×5=5] Column A Column B 2.13 Adrenaline (a) Air Pollutant 2.14 Self pollination (b)According to Haldane the hot marine water containing different organic compounds 2.15 The position of flower is axial (c)The adoloscent phase of human development 2.16 Hot Dilute Soup (d)No need of agent 2.17 SPM (e)The senescence phase of human development. 2.18 Britleness of bone and pain at bone joints (f) Increases heart beat, cardiac output and blood pressure. (g) Dominant trait