Presentation on theme: "Animal Life-Cycles Unit 4. Butterflies Butterflies and moths undergo complete metamorphosis in which they go through four different life stages. Egg -"— Presentation transcript:
Butterflies Butterflies and moths undergo complete metamorphosis in which they go through four different life stages. Egg - A butterfly starts its life as an egg. Larva - The larva (caterpillar) hatches from an egg and eats leaves or flowers almost constantly. The caterpillar molts (loses its old skin) many times as it grows. Pupa - It turns into a pupa (chrysalis); this is a resting stage. Adult - A beautiful, flying adult emerges. There is no growth during this stage. This adult will continue the cycle and reproduce.
Worksheet Fill in these four blanks on your worksheet, then we will go over it as a class
Quiz – Work with a partner then we’ll discuss as a class Butterfly Quiz 1. What emerges from a butterfly egg? ______________________ 2. What is a larva’s first meal? ______________________ 3. What is another name for the butterfly larva? ______________________ 4. What is it called when a caterpillar loses its old, too-tight skin? ______________________ 5. What is the name of the stage when the butterfly is enclosed in a chrysalis? ________________________ 6. Does a pupa hang upside down? _______________________ 7. Can butterflies fly immediately after emerging from their chrysalis? ______ 8. What is the name of the holes through which a butterfly breathes? ___________ 9. How many wings does a butterfly have? __________ 10. Do adult butterflies eat solid food? __________
FROGS Life cycle: Like all amphibians, frogs spend their lives near water because they must return to the water to lay their eggs. Frog eggs are laid in the water. When they hatch into tadpoles, they breathe with gills and swim using a tail. As they mature, they lose their tail, and they develop lungs for breathing air. In harsh climates, frogs bury themselves in sand and mud and hibernate (sleep very deeply) through the cold winter.
Quiz – Work with a partner then we’ll discuss as a class Frog Quiz 1. Do frogs spend live their lives in the water, on the land, or both in the water and on land? __________________________ 2. Are frog eggs laid on land or in the water? __________________________ 3. After a frog egg hatches, what is the animal called? __________________________ 4. Does this newly-hatched animal live on land or in the water? __________________________ 5. Does this newly-hatched animal have legs? __________________________ 6. Does this newly-hatched animal breathe using lungs or gills? __________________________ 7. As frogs mature, do they grow a tail, legs, or gills? __________________________ 8. As frogs mature, do they lose their tail, legs, or eyes? __________________________ 9. What organ does an adult frog use to breathe - gills, spiracles, or lungs? __________________________ 10. Does an adult frog have a tail? __________________