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TLS Online TPP Program

#Question id: 8954

Which of the following is descriptive of protostomes?

#9. Diversity of Life Forms
  1. spiral and indeterminate cleavage, blastopore becomes mouth
  2. spiral and determinate cleavage, blastopore becomes mouth
  3. spiral and determinate cleavage, blastopore becomes anus
  4. radial and determinate cleavage, blastopore becomes anus
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TLS Online TPP Program

#Question id: 5555

#5. Developmental Biology

The formation of the fertilization envelope requires an increase in the cytosolic concentration of ________.
TLS Online TPP Program

#Question id: 5556

#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

#5. Developmental Biology

The plasma membrane of the sea urchin egg ________.
TLS Online TPP Program

#Question id: 5558

#5. Developmental Biology

Fertilization of an egg without activation is most like ________.
TLS Online TPP Program

#Question id: 5559

#5. Developmental Biology

During fertilization, the acrosomal contents ________.
TLS Online TPP Program

#Question id: 5560

#5. Developmental Biology

In a newly fertilized egg, the vitelline layer ________.