Presentation on theme: "Baby Animals Who Do NOT Look Like Their Parents"— Presentation transcript:
1Baby Animals Who Do NOT Look Like Their Parents Year 2 Science Unit Good to Grow Lesson 4
2Frogs and ToadsMost baby animals in the natural world look like their parents when they are born. Some do not. One good example of this is a toad or frog.
3Australias Native Amphibians Frogs are vertebrates(animals with backbones)and are amphibians.All Amphibians:Have a three-chambered heart.Breathe through their skin as well as their lungs.Spend part (or all) of their life as a larval stage living in freshwaterCan survive for a period of time living in water or on land
4Shelter Shelter in daytime during breeding periods. This may be in hollows,cracks and crevices inrocks and logs, under leaflitter, in sand orgravel, or on the under-sides of shady leaves
5Safe Hiding PlaceDuring non-breeding times and during droughts Some frogs burrow into leaf litter, soil or sand; others live in cracks, crevices and hollows in trees, logs and rocks. Some use camouflage – can you find this frog?
6FoodMany frogs eat insects, spiders and other small invertebrates. Large frogs may eat small lizards, mice or small birds. Some may eat other frogs. While they are young, tadpoles usually eat algae and other aquatic plant matter.
7Water for BreedingMost frog species have particular water requirements.Some tadpoles need shallow water, others deep water.Some prefer still water and some running water.Eggs may need to be attached to plants.Eggs of some species float on the water in a kind of foam or froth.There has to be sufficient water present long enoughfor tadpoles to complete their development.
8Frogs Need a HomeSome frogs burrow into leaf litter, soil or sand. Others live in cracks, crevices and hollows in trees, logs and rocks.
9Other Animals Who Do Not Look Like Their Parents at Birth Other animals and insectswho do not look liketheir parents when theyare born include:FliesLadybugsKangaroos and wallabies
10JoeysKangaroos, wallabies spend the first 6 months of their lives developing from an embryo into an infant. They start their lives looking very different from their parents.