In a particular case of secondary succession, three species of wild grass all invaded a field. By the second season, a  single species dominated the field. A possible factor in this secondary succession was

TLS Online TPP Program

#Question id: 12412

#Section 1: Ecology

In most mammalian populations the sex ratio

TLS Online TPP Program

#Question id: 3355

#Section 2: Evolution

Speciation in ancestor as following way

A- Non-swimming populations separated by a river may gradually diverge because there is no gene flow between them

B- Plants commonly exhibit polyploidy, meaning they contain three or more sets of chromosomes

C- The tendency for two species to diverge in morphology and thus resource use because of competition

Which of the following above condition allowed to which type of speciation?

TLS Online TPP Program

#Question id: 10840

#Section 2: Evolution

Why are monarch butterfly’s toxic?

TLS Online TPP Program

#Question id: 4624

#Section 2: Evolution

What was the prevailing notion prior to the time of Lyell and Darwin?

TLS Online TPP Program

#Question id: 10681

#Section 1: Ecology

Which of the following is not condition for commensalism?