Biology 104 Final Exam Questions With
Complete Solutions 100% Correct
Phylum Chordata consists of what group of animals? The Chordates
What is a notochord? A flexible dorsal structure with muscles attached to it
It is the first embryonic skeletal part
What is the dorsal tubular nerve chord? The "spinal chord"; enlarges on the anterior side to form
brain
The muscular part used for locomotion in aquatic species of chordates Post anal tail
Describe the endostyle Glandular groove in the pharynx that produces mucus to trap food
In most vertebrates this is replaced by the thyroid
Originated as a suspension-feeding adaptation and is used for respiration in fishes Pharyngeal gill
slits
What is the common name for Sub-Phylum Urochordata? Proto-chordates
What is the common name for Sub-Phylum Cephalochordata? Tunicates and lancelets
Are tunicates sessile as adults? Yes
What is the exterior of a tunicate called? The tunic
The vertebrates are members of what sub-phylum? Sub-Phylum Vertebrata
Name some characteristics of vertebrates 1) Vertebral column
, Biology 104 Final Exam Questions With
Complete Solutions 100% Correct
2) Cranium (brain case)
3) Pectoral and pelvic girdles
4) Six classes of fish and four classes of tetrapods
What were known as "jaw-less vertebrates"? Ostracoderms
These vertebrates were heavily armored and had jaws Placoderms
What ancient species gave rise to modern bony fishes? Ancanthodians
What is the common name for Class Myxini? Hagfish
What is the common name for Class Cephalospidomorphi? Lamprey
What do Class Myxini and Cephalospidomorphi have in common? 1) Both have cartilagenous
skeleton
2) 2 chambered hearts
3) Gills for respiration
4) Kidney for excretion and osmoregulation
5) Myxini feed on dead/dying prey while Lamprey are considered ecto-parastites
What is the common name for Class Chondrichthyes? Cartilage fishes
Name some characteristics of Class Chondrichthyes 1) Jaws, paired fins, and placoid scales
2) Skeleton made of cartilage
3) 2 Chambered heart
4) 5-7 gill pairs
5) Kidney for excretion of ammonia waste
Complete Solutions 100% Correct
Phylum Chordata consists of what group of animals? The Chordates
What is a notochord? A flexible dorsal structure with muscles attached to it
It is the first embryonic skeletal part
What is the dorsal tubular nerve chord? The "spinal chord"; enlarges on the anterior side to form
brain
The muscular part used for locomotion in aquatic species of chordates Post anal tail
Describe the endostyle Glandular groove in the pharynx that produces mucus to trap food
In most vertebrates this is replaced by the thyroid
Originated as a suspension-feeding adaptation and is used for respiration in fishes Pharyngeal gill
slits
What is the common name for Sub-Phylum Urochordata? Proto-chordates
What is the common name for Sub-Phylum Cephalochordata? Tunicates and lancelets
Are tunicates sessile as adults? Yes
What is the exterior of a tunicate called? The tunic
The vertebrates are members of what sub-phylum? Sub-Phylum Vertebrata
Name some characteristics of vertebrates 1) Vertebral column
, Biology 104 Final Exam Questions With
Complete Solutions 100% Correct
2) Cranium (brain case)
3) Pectoral and pelvic girdles
4) Six classes of fish and four classes of tetrapods
What were known as "jaw-less vertebrates"? Ostracoderms
These vertebrates were heavily armored and had jaws Placoderms
What ancient species gave rise to modern bony fishes? Ancanthodians
What is the common name for Class Myxini? Hagfish
What is the common name for Class Cephalospidomorphi? Lamprey
What do Class Myxini and Cephalospidomorphi have in common? 1) Both have cartilagenous
skeleton
2) 2 chambered hearts
3) Gills for respiration
4) Kidney for excretion and osmoregulation
5) Myxini feed on dead/dying prey while Lamprey are considered ecto-parastites
What is the common name for Class Chondrichthyes? Cartilage fishes
Name some characteristics of Class Chondrichthyes 1) Jaws, paired fins, and placoid scales
2) Skeleton made of cartilage
3) 2 Chambered heart
4) 5-7 gill pairs
5) Kidney for excretion of ammonia waste
