1. Which of the following is correct about reproduction in hemichordata?
a) Internal fertilization
b) Usually direct development
c) Sexes are separate
d) Monoecious organism
Explanation: Sexes are separate
2. The body which is cylindrical and composed of anterior proboscis and a collar and a long trunk
is found in
a) Ascidia
b) Salpa
c) Doliolum
d) Saccoglossus
Explanation: Saccoglossus
3. The excretory organ of proboscis gland is present in
a) Ascidia
b) Salpa
c) Doliolum
d) Saccoglossus
Explanation: The excretory organ of proboscis gland is present in saccoglossus.
4. The fundamental character of chordate is
a) Notochord
b) Dorsal hollow nerve cord
c) Paired pharyngeal gill slits
d) All of these
Explanation: All of these
5. Which is not a distinctive character of non-chordata?
a) Notochordal is absent
b) Ventral and double nerve cord
c) Heart is ventral
d) Post-anal tail is absent
Explanation: Heart is ventral
6. Which of the following are the features of chordates?
(1) Notrchord is present.
(2) CNS is dorsal, hollow and single.
(3) Pharynx is perforated by gill slits.
(4) Heart is ventral.
(5) A post-anal is present
a) All except (4)
b) All except (2)
c) All of these
d) All except (5)
Explanation: All of these
7. Animal belonging to phylum chordata shows
a) Bilateral symmetry, triploblastic and the coelom
b) Organ system level of organization
c) Closed circulatory system
d) All of these
Explanation: All of these
8. Urochordata and cephalochordate are referred as
a) Non-chordates
b) Vertebrates
c) Protochordates
d) All of these
Explanation: Urochordata and cephalochordate are referred as Protochordates.
9. In which subphyla, the notochord is present in tail of larva only?
a) Hemichordata
b) Urochordata
c) Cephalochordata
d) All of these
Explanation: Urochordata
10. Notochord is extended from head to tail region and is persistent throughout their life in
a) Hemichordata
b) Urochordata
c) Cephalochordata
d) All of these
Explanation: Cephalochordata