Phylum Ctenophora

Q.

A Person Who Loves To See Sunset Is Called

Q. Bilaterally symmetrical and acoelomate animals are exemplified by

1. Aschelminthes
2. Annelida
3. Ctenophora
4. Platyhelminthes

Q.

Give an example of ctenophora.

Q. Bioluminescence is seen in phylum

1. Cnidaria
2. Coelenterata
3. Ctenophora
4. Platyhelminthes

Q. Comb plates help in_________

1. Digestion
2. Respiration
3. Locomotion
4. Exeretion

Q. Identify the animal which is triploblastic and acoelomate.

1. Sea anemone
2. Spongilla
3. Ancylostoma
4. Planaria

Q.

Name the animal, which exhibits the phenomenon of bioluminescence. Mention the phylum to which it belongs.

Q. Consider the following features:
(A) Exclusively marine in nature
(B) Show extra and intra cellular digestion
(C) Only sexual reproduction occurs
(D) Development indirect
Which of the following animals has all the above mentioned features?

1. Cliona
2. Pennatula
3. Pleurobrachia
4. Adamsia

Q. Presence of comb plates is a characteristic feature of

1. Pleurobrachia
2. Planaria
3. Ascaris
4. Aurelia

Q. Which one of the following features is incorrect with respect to the phylum Ctenophora?

1. Animals exhibit bioluminescence and have comb plates for locomotion
2. Animals are exclusively marine, diploblastic and have tissue level of organisation
3. Animals are bilaterally symmetrical
4. Animals are hermaphrodites and have only sexual mode of reproduction

Q. How many rows of comb plates are seen in ctenophores?

1. Six
2. Four
3. Two
4. Eight

Q. Match the following columns and select the correct option.

$\begin{array}{cccc}& \text{Column I}& & \text{Column II}\\ \text{(a)}& \text{Adult with radial symmetry and larva with bilateral symmetry}& \text{(i)}& \text{Pleurobrachia}\\ \text{(b)}& \text{Gregarious insect}& \text{(ii)}& \text{Limulus}\\ \text{(c)}& \text{Book gills}& \text{(iii)}& \text{Ophiura}\\ \text{(d)}& \text{Bioluminescence}& \text{(iv)}& \text{Locusta}\end{array}$

1. (a) - (iv), (b) - (i), (c) - (ii), (d) - (iii)
2. (a) - (iii), (b) - (ii), (c) - (i), (d) - (iv)
3. (a) - (iii), (b) - (iv), (c) - (ii), (d) - (i)
4. (a) - (iii), (b) - (ii), (c) - (iv), (d) - (i)

Q. Choanocytes are present in

1. Physalia
2. Pleurobrachia
3. Sycon
4. Echinus

Q. Animal of which phylum have hooks and suckers and are endoparasite on other animals?

1. Platyhelminthes
2. Annelida
3. Ascheminthes
4. Arthropoda

Q.

Ctenophores differ from cnidarians in having

1. Cnidocytes

2. Diploblastic nature

3. Organs

4. Ciliated comb plates

Q. Bodies of the comb jellies have external rows of comb plates.

1. 7
2. 8
3. 9
4. 10

Q. Assertion: In Pleuraobrachia, eight comb like ciliary plates called comb plates are present on the body that help in locomotion.

Reason: Pleurobrachia reproduces sexually and its life cycle includes cydippid larva.

1. Both assertion and reason are true and reason is the correct
   explanation of assertion
2. Both assertion and reason are true but reason is not the correct explanation of assertion
3. Both assertion and reason are false
4. Assertion is true but reason is false

Q. The acoelomate animals, which are triploblastic, having dorso-ventrally flattened body, are placed in phylum

1. Platyhelminthes
2. Aschelminthes
3. Annelida
4. Ctenophora

Q. Identify the phylum X.

1. Porifera
2. Aschelminthes
3. Platyhelminthes
4. Ctenophora

Q. Ctenophores exhibits

1. bioluminescence
2. water canal system
3. cnidoblasts
4. metagenesis

Q.

What animals have parapodia?

Q. Choose the correct match based on the level of organisation.

1. Planaria - tissue level of organisation
2. Pleurobrachia - tissue level of organisation
3. Ornithorhynchus - cellular level of organisation
4. Sycon - organ level of organisation

Q.

What is the exoskeleton of phylum coelenterate made up of?

Q.

What is unique about dinoflagellates?

Q.

The property by which ctenophores emit light is called

1. Bioluminescence

2. Iridescence

3. Reflection

4. Refraction

Q.

Physalia is also known as:

1. sea fan

2. sea pen

3. jelly fish

4. Portuguese man o war

Q.

In which group of animals, the coelom is filled with blood?

1. Arthropoda

2. Annelida

3. Nematoda

4. Echinodermata

Q. Choose the animals that belong to the phylum Echinodermata frorn the options.

1. Sea urchin, cuttle fish and sea lily
2. Echinus, sea harn and sea cucumber
3. Antedon, Ophiura and Echinus
4. Ophiura, Chaetopleura and Echinus

Q.

Sessile organisms that can gather food from all sides usually

A. Exhibit cephalisation

B. Exhibit radial symmetry

C. Have cellular level of organisation

D. Both A and B

Q.

Any 5 examples of protochordata.