In a class of 25 students, the average merks obtained by 23 of them in an examination was 50. The remaining two got 0 each. By how much did the two lower the average for the class?

TLS Online TPP Program

#Question id: 5005

#Unit 11. Evolution and Behavior

Fossilized stromatolites

TLS Online TPP Program

#Question id: 5006

#Unit 11. Evolution and Behavior

The oxygen revolution changed Earthʹs environment dramatically. Which of the following adaptations took advantage of the presence of free oxygen in the oceans and atmosphere?

TLS Online TPP Program

#Question id: 5007

#Unit 11. Evolution and Behavior

Select the factor most likely to have caused the animals and plants of India to differ greatly from species in nearby Southeast Asia.

TLS Online TPP Program

#Question id: 5008

#Unit 11. Evolution and Behavior

Adaptive radiations can be a direct consequence of four of the following five factors. Select the exception.

TLS Online TPP Program

#Question id: 5009

#Unit 11. Evolution and Behavior

A genetic change that caused a certain Hox gene to be expressed along the tip of a vertebrate limb bud instead of farther back helped to make possible the evolution of the tetrapod limb. This type of change is illustrative of

TLS Online TPP Program

#Question id: 5010

#Unit 11. Evolution and Behavior

Which of the following steps has not yet been accomplished by scientists studying the origin of life?