BIOC19H3 Lecture Notes - Lecture 5: Red Blood Cell, Rhodnius, Blood Gas Tension
24 Oct 2017
School
Department
Course
Professor
Document Summary
Some animals undergo a dramatic developmental change in morphology when the juvenile transforms to the adult form! Examine metamorphic changes in insects and amphibians. Hormones play key roles in triggering metamorphic change. Metamorphosis consists of loss of certain structures in the juvenile form and di erentiation and growth of new structures in the adult form. Life cycle: egg > immature form > adult. Life cycle: egg > nymphal instar > > > adult. Life cycle: egg > naiad instar > > > adult. Adults di er from immature form in size and maturity of reproductive organs. Adults di er in size and in possession of fully developed reproductive organs, and have wings! Young and adult do not live in same environ. Naiads are water nymphs! young and adult forms live in same environment, eat same food and have the same life style. Wings develop external and gradullat with each molt: wingless > wing bud > wings.
