CHAPTER 25 ANIMAL DEVELOPMENT
Terms
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- AMNIOTIC SAC
- A TISSUE FILLED WITH LIQUID THAT PROTECTS THE EMBRYO.
- CLEAVAGE
- THE SERIES OF CHANGES THAT TAKE PLACE TO TURN ONE FERTILIZED EGG INTO A HOLLOW BALL OF MANY CELLS.
- PLACENTA
- AN ORGAN THAT CONNECTS THE EMBRYO TO THE MOTHER'S UTERUS.
- UMBILICAL CORD
- MADE OF BLOOD VESSELS THAT CONNECT THE EMBRYO TO THE PLACENTA.
- LABOR
- CONTRACTIONS OF THE UTERUS.
- METAMORPHOSIS
- CHANGES IN APPEARANCE AND LIFESTYLE THAT OCCUR BETWEEN THE YOUNG AND THE ADULT STAGES.
- NYMPH
- A YOUNG INSECT THAT LOOKS SIMILAR TO THE ADULT.
- INCOMPLETE METAMORPHOSIS
- A SERIES OF CHANGES IN AN INSECT FROM NYMPH TO ADULT.
- COMPLETE METAMORPHOSIS
- A SERIES OF CHANGES IN AN INSECT IN WHICH THE YOUNG DO NOT LOOK LIKE THE ADULT.
- PUPA
- A QUIET, NON-FEEDING STAGE THAT OCCURS BETWEEN LARVA AND ADULT.
- LARVA
- A YOUNG ANIMAL THAT LOOKS COMPLETELY DIFFERENT FROM THE ADULT.