animals [comprehension quiz] [typewriterscript] [amphibians]

All amphibians have a backbone. Which means they are vertebrates. All amphibians are cold-blooded. Which means they cannot regulate their own body temperature. All amphibians spend part of their lives in water and part on land. All amphibians do not have scales and their skin is permeable. This allows molecules and gases to pass through. All amphibians have gills for at least part of their lives. Gills are a breathing organ that takes in oxygen from the water. Some species have gills only as larvae like salamanders and tadpoles. Others can have gills throughout their lives like the axolotl. Most amphibians go through metamorphosis. This means they change states eg. tadpole to a frog.

1. Which grouping of animal is this passage about? insect reptile amphibian mammal 2. What are animals called that have a backbone? warm blooded cold blooded invertebrates vertebrates 3. When animals cannot regulate their own body temperature they are called...? cold blooded warm blooded vertebrates invertebrates 4. Where do these animals spend most of their time? on a beach on land in salt water in fresh water and on land 5. Why does their skin need to be permeable? so they can float to make it waterproof allows gases to pass through stops oxygen from escaping 6. How long do these animals have gills? not at all part of their lives all of their lives only when in the water 7. Which species have gills only when they are young larvae? toad salamander frog axolotl 8. Which species have gills throughout their lives? frog toad salamander axolotl 9. What is the process called by which tadpoles turn into frogs? metamorphosis pollination fertilisation permeation

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