Phylum Mollusca

Q.

Write the adaptions of aquatic animals?

Q. Which among the following has a file-like rasping organ?

1. Cockroach
2. Snail
3. Tapeworm
4. Earthworm

Q. The second-largest phylum in the animal kingdom is

1. Arthropoda
2. Annelida
3. Chordata
4. Mollusca

Q.

Differentiate between coelomate, acoelomate and pseudocoelomate with examples.

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

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

Q. Match the following.

Column I	Column II
A. Pila	I. Sea Hare
B. Pinctada	II. Cuttlefish
C. Sepia	III. Apple snail
D. Aplysia	IV. Pearl oyster

1. A-I, B-II, C-III, D-IV
2. A-IV, B-III, C-II, D-I
3. A-III, B-IV, C-II, D-I
4. A-III, B-IV, C-I, D-II

Q. Radula of molluscs are helpful in

1. locomotion
2. reproduction
3. feeding
4. respiration

Q.

What is the heaviest mollusc in terms of mass?

Q. The presence of cnidoblast is the characteristic feature of the phylum:

1. Porifera
2. Ctenophora
3. Annelida
4. Coelenterata

Q.

A rasping organ with transverse teeth and present in the buccal cavity of molluscs is called

1. Dental plate

2. Radula

3. Tongue

4. Rasper

Q.

What body plan is present in flatworms?

Q.

What is the function of a molluscs radula?

Q. Which among the following groups of animals have only molluscs?

1. Starfish, sea urchin, sea lily
2. Snail, devil fish, oysters
3. Crab, insects and spiders
4. Jellyfish, corals, sea pen

Q. What are the locomotory organs of a fish ?

Q. Write the scientific name of pearl oyster ?

Q.

Match the following:
$\begin{array}{cc}\left(a\right)Operculum& \left(i\right)Ctenophora\\ \left(b\right)Parapodia& \left(ii\right)Mollusca\\ \left(c\right)Scales& \left(iii\right)Porifera\\ \left(d\right)Combplates& \left(iv\right)Reptilia\\ \left(e\right)Radula& \left(v\right)Annelida\\ \left(f\right)Hairs& \left(vi\right)CyclostomataandChondrichthyes\\ \left(g\right)Choanocytes& \left(vii\right)Mammalia\\ \left(h\right)Gillslits& \left(viii\right)Osteichthyes\end{array}$

Q.

What Is Radula In Molluscs?

Q.

Which of the following are a matching set of phylum and its three examples?

1. Platyhelminthes - Planaria, Schistosoma, Enterobius

2. Porifera - Spongilla, Euplectella, Pennatula

3. Cnidaria - Bonellia, Physalia, Aurelia

4. Mollusca - Loligo, Teredo, Octopus

Q. Presence of radula is a unique feature of

1. starfish
2. snail
3. sea lily
4. silverfish

Q. Identify the animal given in the image below.

1. Pearl oyster
2. Apple snail
3. Clam
4. Chiton

Q. Devil fish is the common name of

1. Aplysia
2. Octopus
3. Dentalium
4. Sepia

Q. Tusk shell is the common name of

1. Chiton
2. Dentalium
3. Aplysia
4. Sepia

Q.

Name the respiratory organ in phylum hemichordata.

Q.

What is the role of radula in molluscs?

Q.

In which one of the following the following the genus name its tow characters and its phylum are not correctly matched, whereas the remaining three are correct

1. $\begin{array}{ccc}\text{Genus name}& \text{Two Characters}& \text{Phylum}\\ \text{Asterias}& \text{(a) Spiny Skinned}& \text{Echinodermata}\\ & \text{(b) Water vascular System}& \end{array}$

2. $\begin{array}{ccc}\text{Genus name}& \text{Two Characters}& \text{Phylum}\\ \text{Periplanata}& \text{(a) Jointed appendages}& \text{Arthropoda}\\ & \text{(b)Exoskeleton}& \end{array}$

3. $\begin{array}{ccc}\text{Genus name}& \text{Two Characters}& \text{Phylum}\\ \text{Pilia}& \text{(a) Body segmented}& \text{Mollusca}\\ & \text{(b) Mouth with radula}& \end{array}$

4. $\begin{array}{ccc}\text{Genus name}& \text{Two Characters}& \text{Phylum}\\ \text{Sycon}& \text{(a) Pore bearing}& \text{Porifera}\\ & \text{(b) canal system}& \end{array}$

Q.

Choose the organism that has jointed appendages:

1. Spider

2. Comb jellies

3. Sponges

4. Rotifers

Q.

Is radula absent in Pila?

Q. In which of the following, haemocyanin pigment is found ?

1. Mollusca
2. Annelida
3. Echinodermata
4. Lower chordata

Q. Phylum Mollusca is the second largest phylum after Phylum Arthropoda.

1. False
2. True

Q.

Why are dinoflagellates called armoured dinoflagellates?