SCIENCE - ACTIVITY 2

Hello class!

This is our science activity #2
Date: Thursday, March 24^th 2020

MEET THE VERTEBRATES

As you know animals are classified between vertebrates and invertebrates. 

• Invertebrate organisms compose the highest group of living things and are classified into more than 30 phyla. A few of them are sponges, cnidarians, mollusks, arthropods, echinoderms, and worms. 

• On the other hand, we find vertebrates that are organisms that have a backbone and are divided into Fish, reptiles, amphibians, birds and mammals.

Look at some of their general characteristics on the chart below, then answer the questions in your notebook:

Charact.	Fish	Reptiles	Amphibians	Birds	Mammals
Skin cover	Scales	Scales	Soft and moist	Feathers	Hair,skin tisuue
Body temperature	Cold-blooded	Cold-blooded	Cold-blooded	Warm-blooded	Warm-blooded
Reproduction	Oviparous	Oviparous	Oviparous	Oviparous	Viviparous
Breathing organ	Gills	Lungs	Gills/lungs	Lungs	Lungs
Habitat	Aquatic	Aquatic/ terrestrial	Aquatic/       terrestrial	Aquatic/ terrestrial/           air	Aquatic/ terrestrial
Examples	Salmon  and shark	Snake and crocodile	Frog         and salamander	Duck, hummingbird	Whale,              horse,              humans

Helpful tip

Do you know what oviparous and viviparous animals are?

It’s simple, here the definition:

• Oviparous animals: are animals that are born from an egg. For example the chicken, the salmon, the snake, the frog and many more!
• Viviparous organisms: are living things that are born from the mother´s womb. For example: you, me, horses, cows, etc.

Check the video to learn a lot more and be a scientist! 

⇨⇨⇨https://www.youtube.com/watch?v=pQ_vQ3aDNqQ⇦⇦⇦

*Now that you know the most important aspects about vertebrates let’s put hands on work. Taking into account the information provided, answer the following questions in your notebook.

Activity #2

Answer the following questions

1. Which is the only group of vertebrates that is viviparous?

2. Which groups can live with lungs?

3. Which groups live in water?

4. Which groups are warm-blooded?

5. Which groups have scales?