Chapter 2: Kingdom Animalia — Online MCQ Test
ZOOLOGY · CLASS 11th · Tamil Nadu State Board
Practice Chapter 2: Kingdom Animalia with a free chapter-wise online MCQ test.
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....
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Chapter 2: Kingdom Animalia — Important Questions & Answers
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.
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.
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).
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.
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?
- A. Earthworm: Lungs
- B. Prawn: Gills
- C. Cockroach: Skin
- D. Fish: Trachea
Answer: B. Prawn: Gills
Prawns (Arthropoda) respire through gills, while the other pairings are biologically incorrect for the listed organisms.
Prawns (Arthropoda) respire through gills, while the other pairings are biologically incorrect for the listed organisms.