Which component in the medium is reported to counteract the inhibitory effect of auxin and promotes bud formation in the absence of cytokinin.

TLS Online TPP Program

#Question id: 12092

#Unit 10. Ecological Principles

The phenomenon of genetic drift is most likely to occur in populations that

TLS Online TPP Program

#Question id: 12091

#Unit 10. Ecological Principles

Which of the following is a postzygotic isolating mechanism in speciation?

TLS Online TPP Program

#Question id: 12090

#Unit 10. Ecological Principles

The theory of punctuated equilibrium argues that

TLS Online TPP Program

#Question id: 12089

#Unit 10. Ecological Principles

The massive adaptive radiation of insects over the world is most likely related to the

TLS Online TPP Program

#Question id: 12087

#Unit 10. Ecological Principles

At latitudes of 20 to 30 degrees north or south and with prevailing winds from east to west, the most likely biome to develop at M would be a

TLS Online TPP Program

#Question id: 12086

#Unit 10. Ecological Principles

The herbaceous plant Achillea lanulosa is widespread in the Northern Hemisphere. Phenotypic variation in the species has been extensively studied along an altitudinal gradient from sea level to over 3,000 meters. In California there is conspicuous variation in  height; alpine plants are only several centimeters tall  while  those in  the San Joaquin Valley may reach a height of 1.8 meters. Adaptation to different local environments also results in variation in physiological processes such as photosynthetic rate, resistance to cold, and the timing of dormancy.

The genetic polymorphism found in Achillea lanulosa is most likely maintained primarily by