Flycatcher birds that migrate from Africa to Europe feed their nestlings mostly with moth caterpillars. The data presented show the mean dates of egg laying, hatching, and fledging of flycatcher young, and the 1980 and 2000 peak mass of caterpillars.

Which of the following organisms is incorrectly paired with its trophic level? 

TLS Online TPP Program

#Question id: 5554

#Unit 5. Developmental Biology

Even in the absence of sperm, metabolic activity in an egg can be artificially activated by ________.

TLS Online TPP Program

#Question id: 5555

#Unit 5. Developmental Biology

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

TLS Online TPP Program

#Question id: 5556

#Unit 5. Developmental Biology

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

TLS Online TPP Program

#Question id: 5557

#Unit 5. Developmental Biology

The plasma membrane of the sea urchin egg ________.

TLS Online TPP Program

#Question id: 5558

#Unit 5. Developmental Biology

Fertilization of an egg without activation is most like ________.

TLS Online TPP Program

#Question id: 5559

#Unit 5. Developmental Biology

During fertilization, the acrosomal contents ________.