Biology 1402 Test 3 Held Exam
Questions & Answers (Grade A+)
Larva -
correct answer ✅An early stage in the life cycle of an organism
that will undergo complete metamorphosis.
Metamorphosis -
correct answer ✅A marked change in form, character, or function;
a transformation
Invertebrate -
correct answer ✅An animal without a backbone
Vertebrate -
correct answer ✅An animal with a backbone
Bilateral symmetry -
correct answer ✅Body plan in which only a single, imaginary line
can divide the body into two equal halves.
Coelom -
correct answer ✅Body cavity
,Biology 1402 Test 3 Held Exam
Questions & Answers (Grade A+)
Cephalization -
correct answer ✅concentration of sense organs and nerve cells at
the front of an animal's body
Get a head
Radial symmetry -
correct answer ✅Symmetry about a central axis.
pseudocoelom -
correct answer ✅body cavity between the endoderm and
mesoderm tissues that is partially lined with mesoderm tissue
segmentation -
correct answer ✅subdivide main axis of body into stripes, Body is
made up of a series of fused rings; external and internal structures
are repeated segment by segment
2-ended -
correct answer ✅gastro-intestinal tract= mouth-anus
sac-like gut -
correct answer ✅only one opening for both waste and food
, Biology 1402 Test 3 Held Exam
Questions & Answers (Grade A+)
Porifera (pores)* -
correct answer ✅Ex: Sponges
sessile (stationary) filter feeders, supportive extracellular matrix,
sac-like gut, vase shaped
incurrent pores(water exits via mouth), Choanocytes( ciliated cells =
human lungs),
amoebocytes (crawling cells=macrophages)
Cnidaria (needle)* -
correct answer ✅Ex: Jellyfish, hydras, corals, sea anemones
shaped like vases (polyps) or umbrellas(medusa)
Nerves= loose network
Bizarre= Regenerate lost parts
Mythology= hydra & medusa
Platyhelminthes (flat worms)* -
correct answer ✅Ex: flatworms, tapeworms
Head: "brain" senses for light, chemicals, pressure
GPP/Evol: constraint: small
Bizarre= mouth=navel
Questions & Answers (Grade A+)
Larva -
correct answer ✅An early stage in the life cycle of an organism
that will undergo complete metamorphosis.
Metamorphosis -
correct answer ✅A marked change in form, character, or function;
a transformation
Invertebrate -
correct answer ✅An animal without a backbone
Vertebrate -
correct answer ✅An animal with a backbone
Bilateral symmetry -
correct answer ✅Body plan in which only a single, imaginary line
can divide the body into two equal halves.
Coelom -
correct answer ✅Body cavity
,Biology 1402 Test 3 Held Exam
Questions & Answers (Grade A+)
Cephalization -
correct answer ✅concentration of sense organs and nerve cells at
the front of an animal's body
Get a head
Radial symmetry -
correct answer ✅Symmetry about a central axis.
pseudocoelom -
correct answer ✅body cavity between the endoderm and
mesoderm tissues that is partially lined with mesoderm tissue
segmentation -
correct answer ✅subdivide main axis of body into stripes, Body is
made up of a series of fused rings; external and internal structures
are repeated segment by segment
2-ended -
correct answer ✅gastro-intestinal tract= mouth-anus
sac-like gut -
correct answer ✅only one opening for both waste and food
, Biology 1402 Test 3 Held Exam
Questions & Answers (Grade A+)
Porifera (pores)* -
correct answer ✅Ex: Sponges
sessile (stationary) filter feeders, supportive extracellular matrix,
sac-like gut, vase shaped
incurrent pores(water exits via mouth), Choanocytes( ciliated cells =
human lungs),
amoebocytes (crawling cells=macrophages)
Cnidaria (needle)* -
correct answer ✅Ex: Jellyfish, hydras, corals, sea anemones
shaped like vases (polyps) or umbrellas(medusa)
Nerves= loose network
Bizarre= Regenerate lost parts
Mythology= hydra & medusa
Platyhelminthes (flat worms)* -
correct answer ✅Ex: flatworms, tapeworms
Head: "brain" senses for light, chemicals, pressure
GPP/Evol: constraint: small
Bizarre= mouth=navel
