Vertebrate Characteristics and Classification

The video tutorial explains the division of the animal kingdom into vertebrates and invertebrates. Vertebrates, which have a backbone, are further divided into mammals, birds, amphibians, reptiles, and fish. Each group is characterized by unique features such as mammals giving birth and breastfeeding, birds having wings, amphibians laying eggs in water, reptiles having scaly skin, and fish living in water. Invertebrates, lacking a backbone, include arthropods, which are divided into crustaceans, insects, arachnids, and myriapods, each with distinct characteristics.

What percentage of animals on Earth are vertebrates?

• 100%

• 10%

• 50%

• 90%

Which group of vertebrates is known for giving birth and nursing their young?

• Birds

• Mammals

• Reptiles

• Fish

Which of the following is a characteristic of birds?

• Smooth skin

• Scaly skin

• Feathers

• Fur

Amphibians are known for laying eggs in which environment?

• Air

• Forest

• Water

• Desert

Which group of vertebrates has dry, scaly skin?

• Reptiles

• Mammals

• Amphibians

• Fish

What is a unique feature of fish compared to other vertebrates?

• Breathing with gills

• Laying eggs on land

• Having feathers

• Having fur

Which class of arthropods has two pairs of antennae?

• Myriapods

• Arachnids

• Crustaceans

• Insects

Insects are characterized by having how many pairs of legs?

• Two

• Three

• Four

• Five

Which class of arthropods lacks antennae?

• Arachnids

• Myriapods

• Crustaceans

• Insects

Myriapods are known for having many body segments. How many pairs of legs do they have per segment?

• One or two

• Three

• Four

• Five