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Flashcards in Arthropods Deck (54)
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1

what is the most diverse eukaryotic group?

Anthropods

2

Dysticus is a

predaceous diving beetle

3

how do Dytisucs breathe?

adults collect air under wings and use this to breathe underwater

4

What is the structure of an Arthropod?

- Reduced segmentation
- body regions
- jointed appendages

5

What kind of skeleton do Arthropods have?

rigid exoskeleton

6

Arthropods are ...

ecdyosozon (which means they are moulting animals)

7

what does the rigid exoskeleton of a Arthropod cover?

all external surfaces, digestive tract and the tracheae

8

What are the advantages of having a rigid exoskeleton?

Physical support

9

What are the advantages of having a rigid exoskeleton?

place for muscle attachment

10

What are the advantages of having a rigid exoskeleton?

physical protection from abrasion, predatation, parasite entry and desiccation

11

What are the advantages of having a rigid exoskeleton?

Location of pigments - camouflage

12

What are the advantages of having a rigid exoskeleton?

jointed appendages and exoskeleton allow faster locomotion

13

What are the advantages of having a rigid exoskeleton?

Opportunity to change morphology between larval and adult stages

14

Why is it important to change between life stages?

Less competition within the species

15

What the disadvantages of having a rigid exoskeleton

Infelixble and heavy

16

What the disadvantages of having a rigid exoskeleton

continuous growth in size is not possible

17

What the disadvantages of having a rigid exoskeleton

requires energy to form and shed

18

What the disadvantages of having a rigid exoskeleton

prevents the use of cilia as effectors

19

What the disadvantages of having a rigid exoskeleton

respiration through the skin is not possible

20

How do arthropods breathe?

through spiracles - pores and tracheae - tubes

21

what needs to be removed before myosin can bind?

tropomyosin

22

what spikes drive muscle contractions?

motor neurons

23

what causes the contraction of the sarcomere?

sliding of thick filaments between thin filaments

24

Name the 3 types of skeletons

1. hydrostatic skeleton
2. exoskeleton
3. endoskeleton

25

what do skeletal muscles need?

a resistor to act against

26

what is a skeleton?

points of attachment for the muscles

27

skeletal muscles are often found in...

antagonistic piars

28

in which direction do skeletal muscles act?

they act in opposite directions

29

Organ

muscle tissue and connective tusse

30

multinucleate cell that contains many myofibrils is called a

muscle fibre