Phylum Mollusca: The Molluscs

30 Questions | By Caellic | Last updated: Apr 2, 2018 | Total Attempts: 243

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Today we’ll be looking at a well-known, large phylum of invertebrate animals, called Mollusca – whose members are most often referred to as molluscs, of which around 85,000 extant species are recognised. What do you know about them?

Questions and Answers

1.

What carried out many functions, but protection of the soft body is the primary function?
2.

The molluscan body is divided into two regions -- the _________ and _________.
3.

Which region contains the feeding, special sensory, and locomotion structures?
4.

All but the_________ have a rasping, tongue-shaped organ called the radula, which is used for feeding.
5.

Most molluscs go through metamorphosis, producing larval forms such as a ____________ and __________.
6.

Molluscs are the _________ largest phylum of animals with approximately 50,000 extant species.
- A.
  
  1st
- B.
  
  2nd
- C.
  
  3rd
7.

The genus Chiton is located in what class?
8.

The genus Dentalium is located in what class?
9.

The genus Busycon is found in what class?
10.

The genus Helix found in what class?
11.

The genus Limax is found in what class?
12.

The genus Haliotis is found in what class?
13.

The genus Ostrea is found in what class?
14.

The genus Ptychobranchus is found in what class?
15.

The genus Nautilus is found in what class?
16.

The genus Sepia is found in what class?
17.

The genus Octopus is found in what class?
18.

The genus Loligo is found in what class?
19.

What is the genus of this species?
20.

What is the genus of this species?
21.

What is the genus of this species?
22.

What is the genus of this species?
23.

What is the genus of this species?
24.

What is the genus of this species?
25.

What is the genus of this species?