Practice Questions

TLS Online TPP Program

#Question id: 12587

The most plausible hypothesis to explain why species richness is higher in tropical than in temperate regions is that

#10. Ecological Principles

Tropical communities are younger.
Tropical regions generally have more available water and higher levels of solar radiation.
Higher temperatures cause more rapid speciation.
Biodiversity increases as evapotranspiration decreases.

More Questions

#Question id: 5555

#5. Developmental Biology

The formation of the fertilization envelope requires an increase in the cytosolic concentration of ________.

#Question id: 5556

#5. Developmental Biology

Contact of a sea urchin egg with signal molecules on sperm causes the egg to undergo a brief ________.

#Question id: 5557

#5. Developmental Biology

The plasma membrane of the sea urchin egg ________.

#Question id: 5558

#5. Developmental Biology

Fertilization of an egg without activation is most like ________.

#Question id: 5559

#5. Developmental Biology

During fertilization, the acrosomal contents ________.

#Question id: 5560

#5. Developmental Biology

In a newly fertilized egg, the vitelline layer ________.