ENT 101 midterm 1 exam .
,
,insect represent what percent of all known species - correct ans:over 50%
vertebrates - correct ans:have an internal skeleton (endoskeleton) with
vertebrae arranged into a spinal column
invertebrates - correct ans:no vertebrae (no internal support structure) they
have support outside their body (exoskeleton)
two functions of the vertebral column - correct ans:1. provides support
against gravity
2. allows for large body sizes
vertebrate animals (5) - correct ans:1. amphibians
2. fish
3. reptiles
4. birds
5. mammals
more than 90% of all species are what - correct ans:invertebrates
most recognized species of invertebrates - correct ans:arthropods
arthron - correct ans:joint
podos - correct ans:feet
arthropod means what - correct ans:jointed appendages
, two functions of jointed appendages - correct ans:1. locomotion
2. modified for different structures (antennae, mouth parts, reproductive
structures)
how many known species of arthropods are there - correct ans:about 1.2
million
arthropods include what groups (6) - correct ans:1. crabs
2. lobsters
3. spiders
4. scorpion
5. millipedes
6. centipedes
7. insects
5 characteristics of arthropods - correct ans:1. bilateral symmetry
2. segmented bodies
3. ventral nerve cords
4. dorsal blood vessels
5. exoskeletons
bilateral symmetry - correct ans:split along the anterior-posterior axis
(forming a single plane of symmetry, separating into left and right sides)
jellyfish almost have perfect of what type of symmetry - correct ans:radial
3 main body axis - correct ans:1. dorsal/ventral
2. anterior/posterior
,
,insect represent what percent of all known species - correct ans:over 50%
vertebrates - correct ans:have an internal skeleton (endoskeleton) with
vertebrae arranged into a spinal column
invertebrates - correct ans:no vertebrae (no internal support structure) they
have support outside their body (exoskeleton)
two functions of the vertebral column - correct ans:1. provides support
against gravity
2. allows for large body sizes
vertebrate animals (5) - correct ans:1. amphibians
2. fish
3. reptiles
4. birds
5. mammals
more than 90% of all species are what - correct ans:invertebrates
most recognized species of invertebrates - correct ans:arthropods
arthron - correct ans:joint
podos - correct ans:feet
arthropod means what - correct ans:jointed appendages
, two functions of jointed appendages - correct ans:1. locomotion
2. modified for different structures (antennae, mouth parts, reproductive
structures)
how many known species of arthropods are there - correct ans:about 1.2
million
arthropods include what groups (6) - correct ans:1. crabs
2. lobsters
3. spiders
4. scorpion
5. millipedes
6. centipedes
7. insects
5 characteristics of arthropods - correct ans:1. bilateral symmetry
2. segmented bodies
3. ventral nerve cords
4. dorsal blood vessels
5. exoskeletons
bilateral symmetry - correct ans:split along the anterior-posterior axis
(forming a single plane of symmetry, separating into left and right sides)
jellyfish almost have perfect of what type of symmetry - correct ans:radial
3 main body axis - correct ans:1. dorsal/ventral
2. anterior/posterior
