Biology Lab 39

we are done for

• chelicerae • pedipalps • cephalothorax • abdomen

Chelicerae:

.These are the fang-like mouthparts used for injecting venom or capturing prey.

Pedipalps:

.These are sensory appendages that can also be used to manipulate food or by males for mating.

Cephalothorax:

.This is the anterior part of the spider's body, including the head and thorax

. Abdomen:

.This is the posterior part of the spider's body, containing internal organs and sometimes book lungs.

Locate the following appendages on you specimen.

• walking legs

• swimmerets

• uropods

• telson

, what does analogous structures mean?

What does homologous structures mean?

Analogous structures are features of different species that are similar in function but not necessarily in structure and which do not derive from a common ancestral feature

homologous structures are body parts or features in different species that share a similar underlying structure and origin due to common ancestry, even if they have different functions.

• heart

• pericardial sac

• ostia

• gonads

• esophagus

• mouth

• digestive gland

• ventral nerve cord

• brain

• ganglia

• antennal glands

• head

• antenna

• compound eye

• ocellus

thorax

• prothorax

• mesothorax

• metathorax

• abdomen

• tympanum

• spiracle

• ovipositor (in females)

crops

• gastric ceca

• stomach

• intestine rectum

• hemocoel

• heart

• aorta

• Malpighian tubes

• ventral nerve cord

• ganglion

carapace?

the hard upper shell of a turtle, crustacean, or arachnid.

Kingdom

• Phylum

• Subphylum

• Class

Kingdom Animalia

Phylum Arthropoda

Subphylum Chelicerata

Class Arachnida

Kingdom

• Phylum

• Subphylum

• Class

Kingdom Animalia

Phylum Arthropoda

Subphylum Chelicerata

Class Merostomata

Kingdom

• Phylum

• Subphylum

• Class

Kingdom Animalia

Phylum Arthropoda

Subphylum Chelicerata

Class Arachnida

Kingdom

• Phylum

• Subphylum

• Class

Kingdom Animalia

• Phylum Arthropoda

• Subphylum Chelicerata

Class Arachnida

Crayfishes, Crabs, Shrimps

Kingdom

• Phylum

• Subphylum

Kingdom Animalia

• Phylum Arthropoda

• Subphylum Crustacea

Kingdom

• Phylum

• Subphylum

• Class

Kingdom Animalia

• Phylum Arthropoda

Subphylum Myriapoda

• Class Chilopoda (centipedes)- less legs

Kingdom

• Phylum

• Subphylum

• Class

Kingdom Animalia

• Phylum Arthropoda

Subphylum Myriapoda

• Class Diplopoda (millipedes)- many many men i mean legs

insects so everything from beettles to grashopper or som lik that

Kingdom

• Phylum

• Subphylum

• Class

Kingdom Animalia

• Phylum Arthropoda

• Subphylum Hexapoda

• Class Insecta