Some members of a photosynthetic plant species are genetically resistant to an herbicide, while other members of the same species are not resistant to the herbicide. Which combination of events should cause the most effective replacement of the non-herbicide-resistant strain of plants by the resistant strain?

1. The presence of the herbicide in the environment

2. The absence of the herbicide from the environment

3. The maintenance of the proper conditions for one generation

4. The maintenance of the proper conditions for many generations

TLS Online TPP Program

#Question id: 10707

#Section 1: Ecology

Based on the intermediate disturbance hypothesis, a community’s species diversity is increased by

TLS Online TPP Program

#Question id: 16783

#Section 3: Mathematics and Quantitative Ecology

The range of the data 14, 6, 12, 17, 21, 10, 4, 3 is

TLS Online TPP Program

#Question id: 3461

#Section 2: Evolution

the most common way that altruism between related individuals evolves and results from

TLS Online TPP Program

#Question id: 11242

#Section 1: Ecology

A disadvantage of sexual reproduction is

TLS Online TPP Program

#Question id: 10666

#Section 2: Evolution

In a experimental invertebrate population the birth rate is 1200 per 1000 and death rate is 300 per 1000 per generation. Initial population size is 10000. What is value of NET reproductive rate?