Invertebrates MCQ Multiple Choice Questions Answers | Quiz for Practice

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

Correct Answer is: amoebocytes.

Q: 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

Correct Answer is: 1, 2, 3, and 4

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

Correct Answer is: cribrostatin

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

Correct Answer is: 1, 2, 3, and 4

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

Correct Answer is: They may use a gastrovascular cavity as a hydrostatic skeleton.

Q: 12. Corals are most closely related to which group?

Correct Answer is: sea anemones

Q: 13. Which characteristic is shared by both cnidarians and flatworms?

Correct Answer is: a digestive system with a single opening

Get ready to explore the fascinating world of Invertebrates with our multiple-choice questions (MCQs). These practice questions are perfect for students and exam aspirants looking to enhance their understanding and test their knowledge.

About Invertebrates MCQ Questions

Invertebrates MCQs cover a wide range of topics, including the classification, anatomy, physiology, and ecological roles of invertebrates. These questions are designed to challenge your knowledge and help you grasp the key concepts of this diverse group of animals.

Why Practice Invertebrates Objective Questions?

Practicing Invertebrates MCQs offers numerous benefits. It helps you prepare for school and college exams, boosts your confidence for competitive exams, and enhances your understanding of invertebrate biology. Regular practice also aids in concept revision and improves your ability to recall important information quickly.

Who Should Use These MCQs?

Students preparing for school or college exams
Competitive exam aspirants
Candidates preparing for interviews

Invertebrates MCQ Questions for Practice

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

choanocytes
mesoglea cells
pore cells (porocytes)
epidermal cells

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

osculum
body cavity
cnidocytes
spicules made of chitin

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

pore cells.
epidermal cells.
choanocytes.
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 only
1 and 2
1, 2, and 3
1, 2, 3, and 4

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

streptomycin
spongin
calcium carbonate
cribrostatin

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

zygote
choanocyte
gamete
epidermal cell

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

Porifera
Cnidaria
Platyhelminthes
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 and 4
2 and 3
2, 3, and 4
1, 2, 3, and 4

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

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

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

Hydrozoa
Scyphozoa
Anthozoa
Cubozoa

11. Which class of the phylum Cnidaria includes?jellies?with rounded (as opposed to box like medusae?)

Hydrozoa
Scyphozoa
Anthozoa
Cubozoa

12. Corals are most closely related to which group?

jellies
freshwater hydras
sea anemones
sponges

13. Which characteristic is shared by both cnidarians and flatworms?

dorsoventrally flattened bodies
flame bulbs
radial symmetry
a digestive system with a single opening

14. Generally, members of which flatworm class(es) are nonparasitic?

Turbellaria
Trematoda
Cestoda
Monogenea

15. In a small stream, you pick up a rock and observe many small, flattened worms crawling on its undersurface.You decide that they belong to the phylum Platyhelminthes. To which class do they probably belong?

Cestoda
Monogenea
Turbellaria
Trematoda