Final Exam-2

What is a mantle of a mollusk?

A fold in tissue that covers the organs of the visceral mass

Some organisms undergo alternation of generations over time and between those generations some may appear morphologically different

Heteromorphism

Which is not one of the five feeding strategies of animals?

Infusers

Which is true of all Archaea?

Lack peptidoglycan in cell wall and Use ETHER linkages

The relationship between mycorrhizae, which helps in plant root systems, and the plant represents which of the following types of fungi?

Mutualistic fungi

Prokaryotes react to the presence of oxygen in the air in various ways. Which definition below best describes aerotolerant anaerobes

Oxygen can't be used, but the organism can toelrate an environment with high levels of oxygen in the air

What do monoblastic, diploblastic, and triploblastic describe about an organism?

The amount of cell layers

Which of the following is not true about fungi sexual reproduction?

There are only 2 mating types.

Which of the following is false regarding characteristics of animals?

Unique cell junctions

Prokaryotic cells do not possess

an immune system

Which of the following is not a key feature that distinguishes mammals?

bilateral symmetry

Mitochondria in eukaryotic cells were obtained through

endosymbiosis with a proteobacterium

Which feature is not found in the chordate lineage?

external skeleton

In lichens, while the fungi acquire___ from the algae, the algae acquire __ from the fungi

fixed carbon, mineral nutrients

Viruses are not cellular but they

have DNA and RNA, Infect all cellular forms of life, evolve independently from other organisms

Because all animals must take in nutrients from their environment and digest their food internally, the nutritional mode of animals is called

heterotrophic

Club fungi produce fruiting bodies called basidiomata. On the gills of the fruiting body, extensions of hyphae called basidia form, which are the sight of basidiospore creation through___. The resulting basidiospore are___.

meiosis, haploid

Why had ribosomal RNA been important in constructing evolutionary relationships for prokaryotes?

ALL listed: present in all free-living organisms common ancestor of all life evolved slowly, lateral gene transfer unlikely

Which of the following do all organisms have in common?

ALL of the listed: cell membrane replicate DNA semiconservatively use DNA as genetic material common set of metabolic pathways

What is the name for the process of digestion used in fungi?

Absorptive heterotrophy

Which of the following is not an event in the origin of eukaryotic cells?

All are correct: Flexible cell surface cytoskeleton nuclear envelope

Which of the following is an example of a life cycle trade-off?

All listed: Energy growing a shell laying many small eggs short incubation resulting in altricial young

Which of the following is not associated with a parasitic lifestyle, as seen in tapeworms and flukes?

Complex digestive systems

Which bacteria is sometimes called blue-green bacteria because of their pigmentation?

Cyanobacteria

What is the food source of detritivores?

Dead organic matter

When ancestral photosynthetic euglenoids obtained their chloroplasts, the result was a chloroplast surrounded by 3 membranes. This is evidence of acquisition of the chloroplast by:

secondary endosymbiosis, retaining the chloroplast from green algae

Which of the following was an important evolutionary development in eukaryotic cell structure?

The development of a more complex cytoskeleton

Which of the following is a trait of protostomes?

Ventral nervous system

What is radial cleavage?

Zygote and descendant cells divide completely and evenly; ancestral state for all animals except sponges