TLS Online TPP Program

#Question id: 5526


The allantois

#Unit 5. Developmental Biology
  1. Occurs in birds but not in mammals

  2. Is an outgrowth of the amnion in all animals producing it

  3. Contributes blood vessels to the umbilical cord in mammals

  4. Becomes the placenta in mammals

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TLS Online TPP Program

#Question id: 12573

#Unit 10. Ecological Principles

Which of the following conditions is the most likely indicator of a population in an extinction vortex? 

TLS Online TPP Program

#Question id: 12574

#Unit 10. Ecological Principles

According to the small- population approach, what would be the best strategy for saving a population that is in an extinction vortex?

TLS Online TPP Program

#Question id: 12575

#Unit 10. Ecological Principles

All of the following are adaptations that permit the camel to be active by day in the desert EXCEPT 

TLS Online TPP Program

#Question id: 12576

#Unit 10. Ecological Principles

Estimates of current rates of extinction

TLS Online TPP Program

#Question id: 12577

#Unit 10. Ecological Principles

During  a  field  trip,  an  instructor  touched  a  moth  resting  on  a  tree  trunk.  The  moth  raised  its  forewings  to  reveal large eyespots on its hind wings. The instructor asked why the moth lifted its wings. One student answered that sensory  receptors  had  fired  and  triggered  a  neuronal  reflex  culminating  in  the  contraction  of  certain  muscles.  A second student responded that the behaviour might frighten predators. Which statement best describes these explanations?

TLS Online TPP Program

#Question id: 12572

#Unit 10. Ecological Principles

Use what you know about ecosystem stability and the information provided in the graph below to answer the following question.
Which community (a-e) would likely be the most biodiverse?