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
