Invertebrates MCQ Quiz - Multiple Choice Questions & Answers

1. Which cells in a sponge are primarily responsible for trapping and removing food particles from circulating water?

1. choanocytes
2. mesoglea cells
3. pore cells (porocytes)
4. epidermal cells

2. Which of the following is correctly associated with sponges?

1. osculum
2. body cavity
3. cnidocytes
4. spicules made of chitin

3. A sponges structural materials (spicules, spongin) are manufactured by the

1. pore cells.
2. epidermal cells.
3. choanocytes.
4. amoebocytes.

4. Which of these can be observed in the mesohyl of various undisturbed sponges at one time or another?1. amoebocytes2. spicules3. spongin4. zygotes5. choanocytes

1. 1 only
2. 1 and 2
3. 1, 2, and 3
4. 1, 2, 3, and 4

5. Which chemical is synthesized by some sponges and acts as an antibiotic?

1. streptomycin
2. spongin
3. calcium carbonate
4. cribrostatin

6. In terms of food capture, which sponge cell is most similar to the cnidocyte of a Cnidarian?

1. zygote
2. choanocyte
3. gamete
4. epidermal cell

7. A radially symmetrical animal that has two embryonic tissue layers probably belongs to which phylum?

1. Porifera
2. Cnidaria
3. Platyhelminthes
4. Nematoda

8. Which of the following are characteristics of the phylum Cnidaria?1. a gastrovascular cavity2. a polyp stage3. a medusa stage4. cnidocytes5. a pseudocoelom

1. 1 and 4
2. 2 and 3
3. 2, 3, and 4
4. 1, 2, 3, and 4

9. Which of the following is true of members of the phylum Cnidaria?

1. They are not capable of locomotion because they lack true muscle tissue.
2. They are primarily filter feeders.
3. They have either or both of two body forms: mobile polyps and sessile medusae.
4. They may use a gastrovascular cavity as a hydrostatic skeleton.

10. The members of which class of the phylum Cnidaria occur only as polyps?

1. Hydrozoa
2. Scyphozoa
3. Anthozoa
4. Cubozoa