BIOL 3100 (ZOOLOGY) EXAM 2 (LATEST UPDATE) REAL
QUESTIONS AND VERIFIED ANSWERS |100% CORRECT |
ALREADY GRADED A
Which Phylum was the first to exhibit metamerism? Ans✓✓✓Annelida
In the Phylum Annelida, bodies are divided into segments called _____
separated by ______ and are externally marked by circular rings called
_____. Ans✓✓✓metameres, septa, annuli
What type of cleavage do Annelida have? Ans✓✓✓spiral mosaic and
determinate
Annelida have a true coelom that is split into _______, each of which is
lined by a layer of mesodermal epithelium called ______.
Ans✓✓✓coelomic compartments, peritoneum
In Annelida, except ________, the coelom is filled with ____ and serves
as a __________. Ans✓✓✓Hirudinea (leeches), fluid, hydrostatic
skeleton
Describe movement in Annelida. Ans✓✓✓Alternating waves of
contraction by longitudinal and circular muscles along the body;
peristalsis
Which Phylum displays the first closed circulatory system?
Ans✓✓✓Annelida
,Identify 7 components of the Annelida digestive system.
Ans✓✓✓mouth, muscular pharynx, esophagus, crop, muscular gizzard,
intestine, anus
Identify the 3 classes of Annelida covered in class. Ans✓✓✓1.
Polychaeta
2. Oligochaeta
3. Hirudinea
In the Phylum Annelida, flaps called ______ are often found on each
segment. Ans✓✓✓parapodia (parapodium)
A _______ is a ring of secretory cells in the epidermis that appears on
the worm's exterior as a fat band around the body about one-third of the
body length from the anterior end. It is a characteristic of the Class
________. Ans✓✓✓clitellum, Oligochaeta
Phylum Annelida, with the exception of Class _______, have tiny
chitinous bristles called _____. Ans✓✓✓Hirudinea, setae
Do Annelida exhibit eutely? Ans✓✓✓Yes
Identify type of germ layer design in Annelida. Ans✓✓✓Triploblastic
,Phylum Annelida often have a transparent, moist _____ secreted by
__________ (hypodermis) and covers the body. Ans✓✓✓cuticle,
columnar epithelium
The anus of Annelida is used for _______ of wastes.
Ans✓✓✓elimination
Classes of Annelida are categorized by the presence/absence of ______.
Ans✓✓✓setae
Class _____ of Annelida represents the largest and are found mostly in
______ habitats. Ans✓✓✓Polychaeta, marine
Most members of the Class Polychaeta live in _____ or _____.
Ans✓✓✓crevices, tubes
Do Polychaeta have differentiated somites (metameres)?
Ans✓✓✓Some, ex Nereis
Poylchaeta often have a _______ that may or may not be retractile, that
bears eyes, tentacles, and sensory palps. It surrounds the mouth and may
have _____, ______, or ______ in predatory forms.
Ans✓✓✓Prostomium, setae, palps, chitinous jaws
Identify 2 functions of parapodia in Polychaeta. Ans✓✓✓1. crawling
, 2. respiratory functions
Identify 3 types/color of respiratory pigments in Polychaeta. Ans✓✓✓1.
hemoglobin (red)
2. chlorocruorin (blue-green)
3. hemerythrin (red)
How do Polychaeta conduct gas exchange? Ans✓✓✓parapodia and gills
Which class of Annelida has the most specialized sensory organs?
Ans✓✓✓Polychaeta
Which class of Annelida may have tentacular crowns?
Ans✓✓✓Polychaeta
What 2 types of organs are responsible for excretion in Polychaeta?
Ans✓✓✓1. mixed photonephridia/metanephridia - one pair per
metamere
2. nephrostome
Phylum Annelida has a nervous system that consists of a ______ that
runs the length of the worm and includes sensory organs such as ___ and
___. Ans✓✓✓double ventral nerve cord, eyes, statocysts
QUESTIONS AND VERIFIED ANSWERS |100% CORRECT |
ALREADY GRADED A
Which Phylum was the first to exhibit metamerism? Ans✓✓✓Annelida
In the Phylum Annelida, bodies are divided into segments called _____
separated by ______ and are externally marked by circular rings called
_____. Ans✓✓✓metameres, septa, annuli
What type of cleavage do Annelida have? Ans✓✓✓spiral mosaic and
determinate
Annelida have a true coelom that is split into _______, each of which is
lined by a layer of mesodermal epithelium called ______.
Ans✓✓✓coelomic compartments, peritoneum
In Annelida, except ________, the coelom is filled with ____ and serves
as a __________. Ans✓✓✓Hirudinea (leeches), fluid, hydrostatic
skeleton
Describe movement in Annelida. Ans✓✓✓Alternating waves of
contraction by longitudinal and circular muscles along the body;
peristalsis
Which Phylum displays the first closed circulatory system?
Ans✓✓✓Annelida
,Identify 7 components of the Annelida digestive system.
Ans✓✓✓mouth, muscular pharynx, esophagus, crop, muscular gizzard,
intestine, anus
Identify the 3 classes of Annelida covered in class. Ans✓✓✓1.
Polychaeta
2. Oligochaeta
3. Hirudinea
In the Phylum Annelida, flaps called ______ are often found on each
segment. Ans✓✓✓parapodia (parapodium)
A _______ is a ring of secretory cells in the epidermis that appears on
the worm's exterior as a fat band around the body about one-third of the
body length from the anterior end. It is a characteristic of the Class
________. Ans✓✓✓clitellum, Oligochaeta
Phylum Annelida, with the exception of Class _______, have tiny
chitinous bristles called _____. Ans✓✓✓Hirudinea, setae
Do Annelida exhibit eutely? Ans✓✓✓Yes
Identify type of germ layer design in Annelida. Ans✓✓✓Triploblastic
,Phylum Annelida often have a transparent, moist _____ secreted by
__________ (hypodermis) and covers the body. Ans✓✓✓cuticle,
columnar epithelium
The anus of Annelida is used for _______ of wastes.
Ans✓✓✓elimination
Classes of Annelida are categorized by the presence/absence of ______.
Ans✓✓✓setae
Class _____ of Annelida represents the largest and are found mostly in
______ habitats. Ans✓✓✓Polychaeta, marine
Most members of the Class Polychaeta live in _____ or _____.
Ans✓✓✓crevices, tubes
Do Polychaeta have differentiated somites (metameres)?
Ans✓✓✓Some, ex Nereis
Poylchaeta often have a _______ that may or may not be retractile, that
bears eyes, tentacles, and sensory palps. It surrounds the mouth and may
have _____, ______, or ______ in predatory forms.
Ans✓✓✓Prostomium, setae, palps, chitinous jaws
Identify 2 functions of parapodia in Polychaeta. Ans✓✓✓1. crawling
, 2. respiratory functions
Identify 3 types/color of respiratory pigments in Polychaeta. Ans✓✓✓1.
hemoglobin (red)
2. chlorocruorin (blue-green)
3. hemerythrin (red)
How do Polychaeta conduct gas exchange? Ans✓✓✓parapodia and gills
Which class of Annelida has the most specialized sensory organs?
Ans✓✓✓Polychaeta
Which class of Annelida may have tentacular crowns?
Ans✓✓✓Polychaeta
What 2 types of organs are responsible for excretion in Polychaeta?
Ans✓✓✓1. mixed photonephridia/metanephridia - one pair per
metamere
2. nephrostome
Phylum Annelida has a nervous system that consists of a ______ that
runs the length of the worm and includes sensory organs such as ___ and
___. Ans✓✓✓double ventral nerve cord, eyes, statocysts
