Invertebrate Labs

Question 1

How do you identify a M/F…
Crayfish
Grasshopper

Answer 1

Crayfish, male has fwd swimmeretes

Grasshopper: Female Ovipositor

Question 2

Special characteristics of a sea cucumber vs other echinoderms?

Answer 2

Feed with tubed feet
Spit out organs in defense with skeletal hook
Leathery skin

Question 3

Sea Urchin vs starfish mouth and ingestion?

Answer 3

Sea Urchins, soft lips with bones for rock/coral

Starfish, soupy food through small mouth. Expel guts to digest outside

Question 4

Why aren’t sponges considered complex animals?

Answer 4

Lacking specialized tissues and complex organs

Question 5

Acoelomate?
Pseudocoelmale?
Coelomate?

Answer 5

A:lack cavity btwn body wall/GI tract flatworm
P: cavity btwn GI tract and mesoderm
C: cavity within mesoderm. Meso=suspended

Question 6

What is the smallest animal and why isn’t it a protozoan?

Answer 6

Rotifer, has complete digestive tract

Question 7

Virus composition?

What kind causes colds?

Answer 7

SS or DS DNA/RNA inside a protein capsid with glycoproteins on surface
Rhino virus and adenovirus

Question 8

Function of Spornangia?

Answer 8

Grow and store spores

Question 9

Yeast Phylum and special characteristics?

Basidiomycota spore production?

Answer 9

Ascomycota, asexual unicellular

Basidia underneath the gills

Question 10

Three types of lichens?

Answer 10

Folliose: leafy
Fruiticose: branchy
Crustose: crunchy

Question 11

Moss Sporophyte produce? With?

What are the male/ female organs?

Answer 11

Haploid meiospores from meiosis

Antheridia: sperm archegonia: egg

Question 12

Two essential parts of flower

Male pine cones have? Females?

Answer 12

Stamen for pollen and Pistils for ovule

Pollen grains, ovule

Question 13

Rat vs human
Brain
Digestion

Answer 13

Rats have smooth brain with large cecum for cellulose

Question 14

Heart chambers
Birds:
Fish:
Arthropods:
Reptiles:

Question 15

What do birds lack organwise?

Answer 15

Urethra and bladder