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Heat pits and Jacobson’s organs are found in what kind of vertebrate: 

Viviparity of some type occurs in at least some members of which of the following vertebrate groups:  

The theory of endosymbiosis:

Diploblastic organisms are found in which phylum:

Which structure(s) is/are lacking in bacteria?

What vertebrate detects the bioelectrical signals given off by prey [a], and what structure do they have that does this [b]:

The fused clavicle bones of birds which most people know by the term ‘wishbone’ is termed a:

Select all of the following that have flagellated sperm:

Which of the following are NOT a characteristic of gymnosperms?

A sorus is