Ch. 18 Eukarya Review

The number of different species in a community describes: __________.

The diversity of habitats in a region increases the region's species __________.

• altitude

• area

• species richness

• temperature

• all of the above

Match the following to their correct phylum:

• Cnidaria

• Corals and jellyfish

• Arthropoda

• Starfish and sea urchins

• Echinodermata

• Spiders and scorpions

• Mollusca

• Snails and squids

The most successful phylum in regards to diversity and numbers is __________.

• Arthopoda

• Mollusca

• 1. Nematoda

• 1. Platyhelminthes

• 1. Echinodermata

The domain Eukarya consists of ​ (a)   . Like other eukaryotes, protists have ​ (b)   . In general, most protists are susceptible to ​ ​ (c)   .

• plants, animals, fungi, and protists
• animals, plants, protists, and prokaryotes
• a nucleus
• chloroplasts
• a vacuole
• drying out, or desiccation
• temperature
• decomposition
• pH

The tree of life has been rearranged into three domains based on what evidence? __________.

• 1. comparative anatomy

• 1. DNA similarities

• 1. homologous structures

• 1. anatomical evidence

• 1. fossil evidence

All of the following are characteristics of insects, EXCEPT:

• they are invertebrates.

• they are arthropods.

• they have six jointed legs.

• they have three body segments.

• they have an endoskeleton.

You find an animal with no backbone, a body in three segments, jointed appendages, and a hard exoskeleton. You determine that this animal is a(n) __________.

• 1. chordate.

• 1. nematode.

• 1. mollusk.

• 1. arthropod.

• 1. echinoderm.

Put the following animal adaptations in order from earliest (1) to most recent (4) adaptation.

• backbone

• bilateral symmetry

• no symmetry

• radial symmetry

Which of the following lists plant terrestrial adaptations from earliest (1) to most recent(4)?

• vascular

• nonvascular

• seeds

• flowers