Chapter Exam

Chapter 4: Animal Kingdom — Online MCQ Test

Q: Which of the following is a characteristic feature of animals belonging to Phylum Porifera?

Answer: B. Porous body with canal system — Poriferans are sponges and have a body full of pores through which water enters and circulates. This canal system is their defining feature.

Q: Animals with radial symmetry are typically found in which phylum?

Answer: C. Cnidaria — Cnidarians such as Hydra and jellyfish commonly show radial symmetry. This means the body parts are arranged around a central axis.

Q: Animals that possess a pseudocoelom belong to which phylum?

Answer: B. Nematoda — Nematodes or roundworms possess a pseudocoelom, a body cavity not completely lined by mesoderm. This is a major diagnostic feature of the phylum.

BIOLOGY · Grade 11 · CBSE(NCERT)

Practice Chapter 4: Animal Kingdom with a free chapter-wise online MCQ test for CBSE(NCERT) Grade 11 BIOLOGY. This chapter covers: Animal Classification Non Chordates Chordates Phyla Symmetry Coelom Segmentation Vertebrates Invertebrates. AI-generated questions from basic to board-exam level, with instant results and explanations.

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Chapter 4: Animal Kingdom — Important Questions & Answers (FAQ)

Frequently asked questions from CBSE(NCERT) Grade 11 BIOLOGY — Chapter 4: Animal Kingdom, with answers and explanations. These are sample questions; the exam has its own separate question set.

Which of the following is a characteristic feature of animals belonging to Phylum Porifera?

A. Presence of stinging cells
B. Porous body with canal system ✓
C. Segmented body with jointed appendages
D. Notochord throughout life

Answer: B. Porous body with canal system
Poriferans are sponges and have a body full of pores through which water enters and circulates. This canal system is their defining feature.

Animals with radial symmetry are typically found in which phylum?

A. Annelida
B. Arthropoda
C. Cnidaria ✓
D. Mollusca

Answer: C. Cnidaria
Cnidarians such as Hydra and jellyfish commonly show radial symmetry. This means the body parts are arranged around a central axis.

Animals that possess a pseudocoelom belong to which phylum?

A. Annelida
B. Nematoda ✓
C. Arthropoda
D. Chordata

Answer: B. Nematoda
Nematodes or roundworms possess a pseudocoelom, a body cavity not completely lined by mesoderm. This is a major diagnostic feature of the phylum.

Which of the following is a correct comparison between annelids and nematodes?

A. Both have true coelom
B. Annelids are pseudocoelomate and nematodes are coelomate
C. Annelids are coelomate and nematodes are pseudocoelomate ✓
D. Both are acoelomate

Answer: C. Annelids are coelomate and nematodes are pseudocoelomate
Annelids possess a true coelom, while nematodes have a pseudocoelom. This is a standard distinction used in classification.

Which statement is the most appropriate distinction between chordates and non-chordates?

A. All chordates are aquatic and all non-chordates are terrestrial
B. Chordates have a notochord at some stage; non-chordates do not ✓
C. Non-chordates lack symmetry, while chordates always show radial symmetry
D. Chordates are all vertebrates, and non-chordates are all invertebrates without exception

Answer: B. Chordates have a notochord at some stage; non-chordates do not
The presence of a notochord at some stage is the key feature of chordates. Non-chordates do not possess a notochord.