Chelicerates
Crustaceans
Insects
Arthropoda
100

What are chelicerates named for?

Chelicerae - the pincer or claw-like appendage found on spiders and scorpions

100

T/F: Crustaceans have antennae

True! They have 2 pairs
100

How do insects breathe?

They use trachea that branch throughout their body and connect to the outside world through small pores called spiracles 

100

What is the largest group within phylum arthropoda?

Group insecta

200

T/F: All chelicerates are arachnids

False! Horseshoe crabs are an example of a chelicerate that is not an arachnid, but still has chelicerae

200

Why are krill so significant?

They make up a large portion of the ocean's biomass and act as food for many other species such as whale, particularly in the Antarctic when they form swarms

200

How can you tell what an insect eats based on its anatomy?

Observing their mouthparts, as these are specialized structures depending on the diet of the insect.

e.g. Piercing, sponging, siphoning and chewing mouth parts

200

What are the names of body segments found in phylum arthropoda?

Head, thorax and abdomen

Head + thorax = cephalothorax

300

What is the organ for spiders that produces silk?

Spinnerets

300

What are some examples of body structures that are unique to the crustacean group?

Carapace - exoskeletal plate covering the cephalothorax

Swimmerets - flipper-like appendages

Chelipeds - claws

300

Which of the following would you expect to have NO wings?

a. Lepidoptera

b. Thysanura

c. Hymenoptera

d. Coleoptera

b. Thysanura

-ptera refers to wings, this can be helpful to remember! (Odonata is an exception to this rule however, which includes damselflies)

300

What is unique about the way blood flows in arthropods?

They have an open circulatory system - blood flows using gravity and "washes" or "bathes" the tissues

400

How do chelicerates sense their environment?

Pedipalps - Appendages in front of the walking legs that help chelicerates eat and sense their environment

Chelicerates do NOT have antennae!

400

How do crustaceans breathe?

They use gills for gas exchange - they must be wet in order to function

400

Which order of insect would butterflies be classified as?

Lepidoptera

400

What do arthropods have to support their bodies?

Exoskeletons made up of chitin, which must be molted as they do not grow along with the organism