What do all animals, including vertebrates and invertebrates, have in common? Question 1 options:

They have backbones, internal skeletons, and muscles.

They are heterotrophs that must get their food from plants or other animals.

They have lungs or gills for breathing.

They are endothermic (warm-blooded).

Question 2 (1 point)
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All animals share several common characteristics. Which is a characteristic shared by all animals?

Question 2 options:

endoskeletons and muscles

sensory organs and backbones

multi-cellular bodies

exothermic blood systems

Question 3 (1 point)
Sam’s teacher asked him to make observations about animals at the zoo. Sam went to the zoo and filled in these two charts that the teacher gave him.

What is the main difference between the species in Group 1 and Group 2?

Question 3 options:

Group 1 has small organisms, Group 2 has large organisms.

Group 1 are endothermic, Group 2 are exothermic.

Group 1 are vertebrates, Group 2 are invertebrates.

Group 1 has exoskeletons, Group 2 has soft bodies.

Question 4 (1 point)
Which of the following is a characteristic of all mammals?
Question 4 options:

lungs

hair

tail

both 1 and 2

Question 5 (1 point)
What is the benefit of an arthropod’s exoskeleton.

Question 5 options:

It allows arthropods to breathe.

It protects and supports the arthropod’s body.

It allows the arthropod to get food.

It allows the arthropod to see far distances.

Question 6 (1 point)
What do arthropods and segmented worms have in common?

Question 6 options:

They both have segmented bodies during some stage of their life.

They both have hard outer shells that are unmovable.

They both have bones and vertebrae.

They both lack any sense organs.

Question 7 (1 point)
To which group of invertebrates do cephalopods, such as squids, belong?

Question 7 options:

Arthropods

Echinoderms

Cnidarians

Mollusks

Question 8 (1 point)
Sweat glands, fur, and feathers are found on an endotherm.

Question 8 options:

True

False

Question 9 (1 point)
Vertebrates and invertebrates differ in the presence of a backbone. Another characteristic that distinguishes most vertebrates from many invertebrates, is that vertebrates —

Question 9 options:

have a relatively well-developed brain and circulatory system.

have long tube-like bodies that are divided into segments.

take in oxygen from their skins rather than from an inside organ.

have hard outer covering called exoskeletons.

Question 10 (1 point)
During chilly days, you might notice lizards lying (“basking”) in sunny areas. Why do lizards bask in the sun?

Question 10 options:

Ectothemic animals are lazy and the sun puts them to sleep.

Ectothermic animals need to get tanned by the sun's rays for camouflage.

Ectothermic animals use the suns rays to help them hide from enemies.

Ectothermic animals need the warmth from the sun to allow them to move around and hunt for food.

Question 11 (1 point)
Which group of animals could be correctly classified as endothermic?

Question 11 options:

robin, squirrels, mice

bears, snakes, wolves

frogs, lizards, snakes

groundhogs, hawks, crab

Question 12 (1 point)

Using the table, which statement is true?

Question 12 options:

Organisms in both Groups A and B have similar mechanisms for controlling their internal temperatures.

Organisms in Group A have fewer mechanisms for controlling their internal temperatures than those in Group B.

Organisms in both Group A and B usually coexist peacefully.

Organisms in both Group A and B are extinct species.

Question 13 (1 point)
How do “warm-blooded” animals cool off?

Question 13 options:

They convert the food they eat into cool energy.

They sweat or pant to lose heat by water evaporation.

They move to colder climates.

They move around a lot to stimulate their circulation.

Question 14 (1 point)
An animal takes on the temperature of their surroundings so they don't have to use food energy to keep warm. This means they don’t have to eat as often. They are considered an __?

Question 14 options:

Endotherm

Ectotherm

Question 15 (1 point)
Which of these factors is used to classify the different organisms on Earth into Kingdoms (such as protists, fungi, plant, animals, and bacteria) ?

I Number of cells in the organism

II How the organism obtains energy

Question 15 options:

I only

II only

I and II

Question 16 (1 point)
It's sunny in New York, but it is cool. Where would you expect to find this lizard during the day?

Question 16 options:

Under a rock

In a damp stream bed

Basking in a sunny spot

In a hole in the ground