Lab Test 2

What are the 3 types of bacteria?

Saprophytic (saprobes)
Pathogenic (pathogens)
Autotrophic (producers)

What are the two types of autotrophic bacteria?

Photosynthetic or chemosynthetic.

What is the ecological importance of bacteria?

They fix N2 in atmosphere.

What are the three shapes of bacteria?

Bacilli (rod)
Cocci (spherical)
Spirilla (spiral)

What does it mean when there is bacteria near an antibiotic disc?

The bacteria is resistant to that antibiotic.

What is another name of cyanobacteria?

Blue-green algae

Where is cyanobacteria found in?

In water environments

What are the 3 classifications of protists?

Plant-like
Animal-like
Fungal-like

What are some examples of plant-like protist?

Chlamydomonas
Volvox
Spirogyra

What are some examples of animal-like protist?

Amoeba
Paramecium

What are the 2 types of fungi?

Absorptive heterotrophs (saprobes)
Mutualistic symbionts (e.g. lichens)

What are lichen composed of?

Photosynthetic autotroph and fungus

What are the basic requirements for plants?

Light
CO2
O2
H2O
Some minerals

What is the difference between the upper and lower epidermis in a leaf?

The top layer is coated with a waxy cuticle

Associate the different types of leaves with their environment

Syringa - Mesophyte
Nerium/Oleander - Xerophyte
Nymphea - Hydrophyte

What are the 3 layers of cells in sponges?

Epidermal cells
Amoeboid cells
Choanocytes

What are the 4 types of cells in cnidarians?

Nerve cells
Gland cells
Cells that contract
Stinging cells (cnidocytes)

In which form does Obelia reproduce sexually and in which form does it reproduce asexually?

Asexually: polyp
Sexually: medusa

Name the main characteristics of Platyhelminthes

Acoelomate
Cephalization
Gastrovascular cavity (except tapeworms)

Name the main characteristics of Nematoda

Pseudocoelomate
Complete digestive tract
Tube within a tube body plan

Name the main characteristics of Annelida

Segmented
Coelomate
Closed circulatory system
Gas exchange across the body surface

What are Mollusca composed of?

Muscular ventral foot
Visceral mass
Mantle that secretes a protective shell

What are the functions of exoskeleton?

Protection
Attachment point for muscles and paired appendages

What methods of gas exchange do Arthropoda employ?

Spiracles/tracheal system
Feathery gills
Book lungs

What is the purpose of the water vascular system?

Locomotion
Grabbing food items

What are the common characteristics of Chordates?

Notochord
Hollow dorsal nerve cord
Pharyngeal gill slits
Post-anal tail

What is the function of the epiglottis?

Prevents choking by covering the glottis when swallowing

Name the classes of chordata and their respiratory medium and surface.