1. Gastro-vascular cavity with single opening is found in
a) Porifera
b) Coelenterate
c) Aschelminthes
d) Annelida
Explanation: Coelenterate
2. Coelenterates asexually reproduce by
a) Budding
b) Gametes
c) Conidia
d) Gemmules
Explanation: Coelenterates asexually reproduce by budding
3. The larva stage shown by coelenterate is called
a) Amphiblastula
b) Parenchymula
c) Planula
d) All of these
Explanation: The larva stage shown by coelenterate is called Planula.
4. Match the following:
Column I Column II
A. Physalia – 1. Brain coral
B. Adamsia – 2. Sea fan
C. Pennatula – 3. Sea pen
D. Gorgonia – 4. Sea anemone
E. Meandrina – 5. Portuguese man-of-war
F. Aurelia – 6. Jellyfish
a) A−5, B−4, C−2, D−3, E−1, F–6
b) A–5, B–4, C–3, D–2, E–1, F–6
c) A–5, B–4, C–2, D–1, E–2, F–6
d) A–5, B–3, C–4, D–2, E–1, F–6
Explanation: A–5, B–4, C–3, D–2, E–1, F–6
5. Ctenophores are commonly known as
a) Sea walnut
b) Comb jellies
c) Both (a) and (b)
d) None of these
Explanation: Both (a) and (b)
6.The following features belongs to which phylum?
(1) Exclusively marine
(2) Radial symmetry
(3) Diploblastic
(4) Tissue level organization
a) Coelentrata
b) Porifera
c) Ctenophora
d) Platyhelminthes
Explanation: Ctenophora
7. Body bears eight external rows of ciliated comb plates present in phylum _____.
a) Coelentrata
b) Porifera
c) Ctenophora
d) Platyhelminthes
Explanation: Ctenophora
8. Ctenophores show
a) Extra and intracellular digestion
b) Sexual reproduction only
c) Bioluminescence
d) All of these
Explanation: All of these
9. Example of ctenophores is
a) Pleurobrachia
b) Ctenoplana
c) Both (a) and (b)
d) None of these
Explanation: Both (a) and (b)
10. The following features belong to which phylum?
(1) Bilateral symmetry
(2) Triploblastic, Acoelomate
(3) Organ level of organization
(4) Dorsoventrally flattened body
a) Platyhelminthes
b) Aschelminthes
c) Annelida
d) Arthropoda
Explanation: Platyhelminthes