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TLS Online TPP Program

#Question id: 8908

According to one hypothesis, the jaws of vertebrates were derived by the modification of

#Unit 9. Diversity of Life Forms
  1. scales of the lower lip.
  2. skeletal rods that had supported pharyngeal (gill) slits.
  3. one or more gill slits.
  4. one or more of the bones of the cranium.
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TLS Online TPP Program

#Question id: 5522

#Unit 5. Developmental Biology

In reptiles, birds, and mammals, mesoderm is made by invagination and involution into the
TLS Online TPP Program

#Question id: 5523

#Unit 5. Developmental Biology

Ectodermal cells condense into placodes that change into
TLS Online TPP Program

#Question id: 5524

#Unit 5. Developmental Biology

Interaction of the optic stalk with ectoderm makes the development of the
TLS Online TPP Program

#Question id: 5525

#Unit 5. Developmental Biology

"ontogeny recapitulates phylogeny" means
TLS Online TPP Program

#Question id: 5526

#Unit 5. Developmental Biology

The allantois
TLS Online TPP Program

#Question id: 5527

#Unit 5. Developmental Biology

Ectoderm cells related with anterior neural crest cells condense and form