Bio Lab Quiz Lab 9 part 1 of quiz 4

Question 1

Myriapoda

Answer 1

• is a class
• orders under it: chilopoda (centipedes) and diplopoda (milipedes)
• united by derived features of the loss of compound eyes

Question 2

Chilopoda

Answer 2

-centipedes (centipedes)
-chilopodans (the centipedes) are united by the presence of poisonous fangs .
-last part of legs - pinchers
1 pair legs per segments
-predators

Question 3

Diplopoda

Answer 3

-diplopodans (the millipedes) are defined by presence of diplosegments (which are formed by the fusion of pairs of body segments into one so that each “segment” has two pairs of legs)

Question 4

Hexapoda # 1

Answer 4

(Insects)- consists of order odonata (dragonflies and damselflies), order orthoptera (grasshoppers and crickets), order hemiptera (true bugs), order diptera (flies), order hymenoptera (bees, ants, wasps), order coleoptera (beetles), order lepidoptera (moths and beetles), etc.

Question 5

Hexapoda # 2

Answer 5

• most successful group of animals on face of the earth
• compared to insects, the vertebrates pale to insignificance not only in the number of species, but also in total weight and diversity of habits they occupy.
• derived characters that unite all hexapods- loss of all abdominal appendages, a distinct three segmented thorax (adult insects always have 3 pairs of legs on the thorax), and the fusion of the 2nd maxillae ( a pair of mouth parts) into a labium

Question 6

Spiracles

Answer 6

-these parts are connected to the trachae so insects can breathe

Question 7

Thorax

Answer 7

• one body section of hexapods (middle of head and abdomen)

- adult insects always have three pairs of legs on the thorax (insect wings are also attached to the thorax)

Question 8

Abdomen

Answer 8

• one of the body segments of insects

-

Question 9

Ovipositor

Answer 9

-Female insects use a long ovipositor to deposit eggs

Question 10

Diplosegments

Answer 10

• present in diplopodans (the milipedes)

- these are formed by the fusion of pairs of body segments into one so that each “segment” has two pair of legs

Question 11

Differences between centipedes and milipedes

Answer 11

• diplopods have diplosegments (2 segments fused together)
• they also have 2 pairs legs and 2 spiracles
• diplopods are herbivores and have armored tanks
• chilopodans have 1 pair legs per segment
• they are predators
• have venomous fangs
• last pair legs- pincers

Question 12

The three body sections of insects

Answer 12

head, thorax , abdomen

Question 13

The two types of metamorphosis

Answer 13

• Complete metamorphosis: a monophyletic group of insects that includes beetles, flies, wasps, and butterflies, that have a type of development in which a dramatic series of metamorphoses occur.
• Incomplete metamorphosis: in insects with incomplete metamorphosis such as cockroaches and grasshoppers, the young resemble adults except they have no wings and sex organs till they reach the final, adult stage. They often compete with adults.

Question 14

The varying mouth parts

Answer 14

Grasshoppers: have mouth parts modified for chewing
Houseflies: have mouth parts for sponging
Mosquitoes: have mouth parts for piercing and sucking
Moth and butterflies: have mouth parts modified for sipping

Question 15

How are insects beneficial to humans?

Answer 15

Some (especially leaf cutter ants) feed on dead flora and fauna and then recycle nutrients through the habitat- helps keep soil healthy and rich.
(Link in food web)
- pollinators
-food for us
- products: honey, wax, silk
-Forsenics

Question 16

How are insects detrimental to humans?

Answer 16

• Eat a lot of vegetation (so less for humans to eat)

- pesticides to kill them ($$) and harm the environment

Question 17

How the compound eye functions

Answer 17

• made up of ommatidia (visual receptors)
• Each ommatidia (contributes info to a small field of view)
• Creates mosaic image
• insect can have 1000’s of ommatidia

Question 18

Respiration

Answer 18

-spiracles (openings in the body) are connected to the trachae in insects

Question 19

Sexual dimorphism

Answer 19

They are sexually dimorphic