Invertebrates

Question 1

Why are invertebrates important?

Answer 1

They are pollinators, help in the decaying process

Question 2

what are invertebrates?

Answer 2

They are bugs, They lack a backbone, they account for 95% of all species, very important.

Question 3

What is the phylum of invertebrates?

Answer 3

Arthropoda

Question 4

What are the external characteristic of a arthropoda?

Answer 4

Exoskeleton made out of chitin, Body segments are grouped into specialized regions called Tagmata. They have jointed appendages (could have special functions)

Question 5

What is the four subphylums of arthropoda?

Answer 5

Hexapods, chelicerata, myriapods, crustacea (don’t really need to know)

Question 6

Do arthropods molt their chitin layer?

Answer 6

Yes

Question 7

What are the three segments seen in the body?

Answer 7

Head, thorax, abdomen.

Question 8

when there are two segments in the body what are they called?

Answer 8

cephalothorax
and abdomen

Question 9

Miropod Centipede

Answer 9

Have mangy segments, with centipedes each segment has two legs, predator, flat body

Question 10

Miropod millipede

Answer 10

Hove many segments each segment had four legs, they are decomposers, slow moving

Question 11

Chelicerata’s

Answer 11

Spiders, ticks and mites, very important for the food chain. They are predators, and vectors for diseases. They will have eight legs, no antenna, two main body segments (cephalorax, abdomen) multiple eyes, some have silk producing glands, fangs and pincers

Question 12

what is the class Insecta good for? (hexapoda subphylum)

Answer 12

Crucial in pollination, decomposition and as a food source,

Question 13

Insecta Features

Answer 13

They have three segments (Head, thorax, abdomen). Their head has compound eyes. antena, thorax has legs (6), and two pairs of wings (4 wings in total) Mouth parts are for biting, sipping nectar or piercing.

Question 14

Within Insecta you have what type of category

Answer 14

True bugs, they have very specific features that they must all have

Question 16

which insects start as aquatic insects?

Answer 16

Dragonflies, damselflies, stonefly, and caddisfly, this is important because of management because we have to focus on water instead of land.

Question 17

What is metamorphosis? And what category does this?

Answer 17

Hexapods, Its when they exist in a specific form and then once it has enough energy it will molt into another form. (caterpillar to butterfly)

Question 18

Why is metamorphism important for ID and Management?

Answer 18

It is an important way to identify the species

Question 19

Biphasic

Answer 19

Metamorphism species who basically lives two different lives with different predators and food

Question 20

Benthic or Macroinvertebrates

Answer 20

Fresh Water invertebrates (streams rivers etc), They are bIphasic (Two phases) Need water (Without that they don’t exists and we loose the lower end of the food chain. Trophic cascade (food web collapses)

Question 21

How are benthic macroinvertebrates classified?

Answer 21

They are classified based on how tolerant they are too pollutants. Its an easy way to tell if water is polluted (you will see or not see the species dependant on how healthy the water is)

Question 22

Pollutant Intolerant

Answer 22

Cold clear streams, high oxygen (Stone flies)

Question 23

Moderately pollution intolerant

Answer 23

Dragon flies and damsal flies and scuds (order arthropoda also a crustacean)

Question 24

Pollutant tolerant

Answer 24

even in heavily polluted waters you will most likely see these species. (Snails -Gastropoda, no biphotic)

Question 25

Hexapods

Answer 25

Three segments (head, thorax, abdomen) and three pairs of legs (6 total)