Lab Test 2

What are the 3 types of bacteria?

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.