While creation and presence of variations is directionless, natural selection is directional as it is in the concept of adaptation . Explain.

Explain the folloiwing: natural selection.

Discuss the importance of artifical selelction in the derivation of the concept of natural selection

What is natural selection in modern terms? Elucidate the three different effects of natural selection on variation.

Direction. In the following questions, a statement of assertion is followed by a statement of reason. While answering a question, you are required to choose the correct are out of the given four responses and mark it as (A). If both assertion and reason are true and reason is the correct explanation of the assertion, (B) if both assertion and reason are true but reason is not correct explanation of the assertion. (C) if assertion is true, but reason if false, (D) if both assertion and reason are false Assertion : The presence of large magnetic flux through a coil maintains a current in the coil, if the circuit is continous. Reason : Only a change in magnetic flux will maintain an induced current in the coil

Direction. In the follwing questions, a statement of assertion is followed by a statement of reason. While answering a question, you are required to choose the correct are out of the given four responses and mark it as (A). If both assertion and reason are true and reason is the correct explanation of the assertion, (B) if both assertion and reason are true but reason is not correct explanation of the assertion. (C) if asssertion is true, but reason if false, (D) if both assertion and reason are false Assertion : Kirchhoff's first law for electrical circuits acounts for conservation of charge. While the second law conservation of energy. Reason : Because charge ha discrete nature and the current supplied by the battery in the circuit comes at the expense of chemical energy stored in it.

Explain why (or how): Bats can ascertain distances, directions, nature, and sizes of the obstacles without any “eyes”,