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BIO 1404 Lab Questions and Answers 100% Pass
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BIO 1404 Lab Questions and Answers 100% Pass
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BIO 1404 Lab Questions and Answers 100% PassTentacles (Sea Anemone) Correct Ans-An elongated flexible unsegmented extension;
surrounds the mouth or oral cavity; used for feeding, grasping or locomotion,
These are hollow
Pedal Disc (Sea Anemone) Correct Ans-The broad, flat base of many sea anemones; used
for attachment to a substrate
Column (Sea Anemone) Correct Ans-Any of various tubular or pillar-like supporting
structures in the body; generally having a single tissue origin and function: the vertebral
column
Pharynx (Sea Anemone) Correct Ans-Muscular tube that protrudes from the ventral side of
the worm and ends in the mouth
Gastrovascular Cavity (Sea Anemone) Correct Ans-Digestive cavity, it distributes nutrients
to distant parts (tentacles because they are hollow), can serve as a hydrostatic cavity
A central cavity with a single opening in the body of certain animals including cnidarians and
flatworms
, BIO 1404 Lab Questions and Answers 100% Pass
Septa (Sea Anemone) Correct Ans-In gastrovascular cavity of sea anemones; curtain like
muscular membranes, have edges that secrete digestive enzyme; increases surface area of the
cavity
Inside are gonads
Acontia (Sea Anemone) Correct Ans-Thread-like defensive organs composed of largely of
nettling cells (cnidae); thrown out of the mouth or special pores when irritated; help further
incapacitate prey inside the mouth
LOCATION: At the bottom of the gastrovascular cavity closest to basal disc
Nerve Net (Hydra) Correct Ans-A web like system of neurons, characteristic of radial
symmetry; such as hydras
This recruits other tentacles when they have food (sea anemone)
Tentecals (Hydra) Correct Ans-When hungry they wave around, have cnidoctyes
Hydra Characteristics Correct Ans-Green: Because they have a endosymbiotic relationship
with algae called zooxanthellae
, BIO 1404 Lab Questions and Answers 100% Pass
Radial symmetry, diplastic, 1 digestive opening
Phylum Platyhelminthes Correct Ans-Flatworm, tapeworms and flukes
1 opening digestive system, 3 germ layers, cephalization, bilateral symmetry, concentration of
neurons (primitive brain), lack respiratory structures
Auricles (Planarian) Correct Ans-Ear-like projections at the base of the head, sensitive to
touch. light, and the presence of some chemicals; contain chemosensory chemicals: these
sense ordor
Eyespots (Planarian) Correct Ans-Highly pigmented region that function in light reception;
light sensitive cells in the epidermis of some invertebrates
Dorsal side
Pharyxn (Planarian) Correct Ans-The muscular tube that protrudes from the ventral side of
the worm and ends in the mouth
, BIO 1404 Lab Questions and Answers 100% Pass
Gastrovascular Cavity (Planarian) Correct Ans-A central cavity with a single opening in the
body of the cnidarians and flatworms; functions in digestion and distribution of nutrients
Diverticula (Planarian) Correct Ans-Secondary branches from the gut; increases surface
area of the digestive tract
HOMOLOGOUS: Septa in a sea anemone; typhosole in the earth worm
Nerve Ladder (Planarian) Correct Ans-The nervous system of the planarians resembling a
ladder; has 2 nerve cords with ganglia (brain) at the anterior end. Transverse nerves that
connect the two cords keep movements of the two sides coordinated
Flame Bulbs (Planarian) Correct Ans-A specialized excretory cell found in the simplest
freshwater invertebrates; function like a kidney, removing waste materials
HOMOLOGOUS: Nephridia in the earth worm; Kidney in the fetal pig
TapeWorm Correct Ans-Parasitic , have become structurally simplified,
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