Chapter Exam

Chapter 2: Kingdom Animalia — Online MCQ Test

Q: Which level of organization is observed in the phylum Porifera?

Answer: A. Cellular level — Poriferans are multicellular organisms but lack tissues and organs, exhibiting only cellular level organization.

Q: Which of the following phyla is characterized by the presence of cnidoblasts?

Answer: B. Cnidaria — Cnidoblasts or cnidocytes are stinging cells present in the tentacles of members of the phylum Cnidaria.

Q: Which of the following is an example of an acoelomate animal?

Answer: B. Fasciola — Fasciola (liver fluke) belongs to Phylum Platyhelminthes, which are acoelomate (lacking a body cavity).

Q: If an organism has a body cavity that is not completely lined by mesoderm, it is classified as:

Answer: B. Pseudocoelomate — Pseudocoelomates have a body cavity between the ectoderm and endoderm that is not fully lined by mesodermal epithelium.

Q: Which of the following correctly matches the animal to its respiratory organ?

Answer: B. Prawn: Gills — Prawns (Arthropoda) respire through gills, while the other pairings are biologically incorrect for the listed organisms.

ZOOLOGY · CLASS 11th · Tamil Nadu State Board

Practice Chapter 2: Kingdom Animalia with a free chapter-wise online MCQ test for Tamil Nadu State Board CLASS 11th ZOOLOGY. This chapter covers: Focusing on animal classification this chapter details body symmetry germ layers coelom types and body plans. Students examine non-chordate phyla and chordate classes structural fe.... AI-generated questions from basic to board-exam level, with instant results and explanations.

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Chapter 2: Kingdom Animalia — Important Questions & Answers (FAQ)

Frequently asked questions from Tamil Nadu State Board CLASS 11th ZOOLOGY — Chapter 2: Kingdom Animalia, with answers and explanations. These are sample questions; the exam has its own separate question set.

Which level of organization is observed in the phylum Porifera?

A. Cellular level ✓
B. Tissue level
C. Organ level
D. Organ system level

Answer: A. Cellular level
Poriferans are multicellular organisms but lack tissues and organs, exhibiting only cellular level organization.

Which of the following phyla is characterized by the presence of cnidoblasts?

A. Ctenophora
B. Cnidaria ✓
C. Platyhelminthes
D. Mollusca

Answer: B. Cnidaria
Cnidoblasts or cnidocytes are stinging cells present in the tentacles of members of the phylum Cnidaria.

Which of the following is an example of an acoelomate animal?

A. Ascaris
B. Fasciola ✓
C. Pheretima
D. Periplaneta

Answer: B. Fasciola
Fasciola (liver fluke) belongs to Phylum Platyhelminthes, which are acoelomate (lacking a body cavity).

If an organism has a body cavity that is not completely lined by mesoderm, it is classified as:

A. Acoelomate
B. Pseudocoelomate ✓
C. Eucoelomate
D. Schizocoelomate

Answer: B. Pseudocoelomate
Pseudocoelomates have a body cavity between the ectoderm and endoderm that is not fully lined by mesodermal epithelium.

Which of the following correctly matches the animal to its respiratory organ?