The animals belonging to subphylum Cephalochordata belong to phylum of chordates and have a flattened and tapering body at the ends.
We prepared a list of exercises on subphylum Cephalochordata so you can test your knowledge about animals that bury themselves in the sand leaving only their mouths exposed.
see more
Biology teacher fired after class on XX and XY chromosomes;…
Cannabidiol found in common plant in Brazil brings new perspective…
You can consult the feedback and save this list of exercises in PDF at the end of the post!
1) (UFV) The phylum Chordata groups examples of very diversified organisms. However, their representatives have some morphological characteristics in common, at least at some stage of development. Of the characteristics below, one that is not common to all Chordata is:
a) gill slits.
b) dorsal nerve tube.
c) notochord.
d) lung breathing.
e) coelom.
2) (UFJF) Regarding the animals of the Chordata group, in addition to the presence of a notochord and a propelling tail, which of the characters below distinguish them from other groups of animals?
a) Pharyngeal slits and dorsal nerve tube.
b) Pulmonary or gill breathing and circulatory system with heart.
c) Coelom derived from the archenteron and indeterminate radial cleavage.
d) Bilateral and triploblastic systems.
e) Enterocoelomates and metamerized body.
3) Amphioxus belong to the group of protochordates, more precisely to the subphylum cephalochordata. These animals are filter feeders and have a complete digestive system. Mark the alternative that correctly indicates the path of water inside the body of these animals.
a) Mouth, gill slits, atrium and atriopore.
b) Mouth, atrium, atriopore and gill slits.
c) Mouth, gill slits, atriopore and atrium.
d) Mouth, atriopore, atrium and gill slits.
4) (FGV) The chordate phylum comprises four subphyla: hemichordates, urochordates, cephalochordates and vertebrates. The first three are usually grouped under the name of protochordates. The notochord exists:
a) only in the embryonic phase of vertebrates and throughout the life of protochordates.
b) in the adult phase of vertebrates and in the embryonic life of protochordates.
c) in the embryos of all chordates and in the adult stage of only a few protochordates.
d) throughout the life of chordates.
e) only in the embryonic stage.
5) Amphioxus are representatives of a group of protochordates known as cephalochordates. Regarding the reproduction of amphioxus, mark the incorrect alternative.
a) Fertilization in these animals is external.
b) Amphioxus are dioecious animals.
c) Amphioxus develop directly.
d) Amphioxus have separate sexes.
6) Cephalochordates are a group of animals represented by amphioxus. This marine animal lives partially buried in the earth, leaving only its mouth exposed. In these animals, the notochord:
a) persists throughout life.
b) appears only in the larval stage.
c) appears only in adulthood.
d) is absent.
7) (UFRGS) The following are differential and exclusive characteristics of chordates present at least in the first stages of development:
a) bilateral symmetry, segmented body and notochord.
b) segmented body, dorsal nerve tube and gill slits.
c) bilateral symmetry, dorsal nerve tube and gill slits.
d) dorsal nerve tube, notochord and gill slits.
e) bilateral symmetry, segmented body and dorsal nerve tube.
8) The Cephalochordata have this denomination due to a characteristic related to the notochord of this animal. Mark the alternative that explains this name.
a) The notochord is present exclusively in the caudal region.
b) The notochord is present exclusively in the anterior region of the body.
c) The notochord is restricted to the central part of the animal's body.
d) The notochord extends from the front to the back of the animal's body.
9) (UNICID) Sharks and dolphins are included in the same group, due to their evolutionary kinship, which is due to the presence of anatomical and physiological characteristics, both in the embryonic and in the adult. Among these characteristics, it is correct to mention:
a) dorsal neural tube, notochord, and pharyngeal slits.
b) spinal cord, bony skeleton and anterior fins.
c) dorsal nervous system, skull and dual circulation.
d) atrophied coelomic cavity, caudal fin and posterior fins.
e) mesoderm, vertebral column and gill respiration.
10) Amphioxus belong to the group of protochordates, more precisely to the subphylum cephalochordata. These animals are filter feeders and have a complete digestive system. Mark the alternative that correctly indicates the path of water inside the body of these animals.
a) Mouth, gill slits, atrium and atriopore.
b) Mouth, atrium, atriopore and gill slits.
c) Mouth, gill slits, atriopore and atrium.
d) Mouth, atriopore, atrium and gill slits.
1 – d
2 – the
3 – the
4 – c
5 – c
6 – the
7 – d
8 – d
9 – the
10 – the
Click here to save the list of exercises on the subphylum Cephalochordata in PDF!
Read too:
