Practice Questions

TLS Online TPP Program

#Question id: 10708

Which of the following statements is a likely explanation for why invasive species take over communities into which they have been introduced?

#Unit 10. Ecological Principles

Invasive species are less efficient than native species in competing for the limited resources of the environment.
Invasive species are not held in check by the predators and agents of disease that have always been in place for native species.
Invasive species have a higher reproductive potential than native species.
Invasive species come from geographically isolated regions, so when they are introduced to regions where there is more competition, they thrive

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TLS Online TPP Program

#Question id: 5538

#Unit 5. Developmental Biology

The first truly vertebrate phase of development is manifested by the formation of the

TLS Online TPP Program

#Question id: 5539

#Unit 5. Developmental Biology

When does neurulation occur during human pregnancy?

TLS Online TPP Program

#Question id: 5540

#Unit 5. Developmental Biology

A new-born infant attains maternal antibodies from the mother's

TLS Online TPP Program

#Question id: 5541

#Unit 5. Developmental Biology

What is the valued average rate at which the human brain produces neurons during development?

TLS Online TPP Program

#Question id: 5542

#Unit 5. Developmental Biology

One stage of cleavage is the morula stage which is:

TLS Online TPP Program

#Question id: 5543

#Unit 5. Developmental Biology

What is the purpose of the chorion in terrestrial vertebrate embryos?