A diagram in the course handout shows that a tiny capsule inside a cnidarian stinging cell everts a thread when triggered. Identify the related structure or process.
Correct Answer: A. nematocyst
MCQ Collection
Animal Diversity-I (Invertebrates) MCQs
Practice Animal Diversity-I (Invertebrates) questions with answers and explanations.
A student is revising Animal Diversity-I: a free-living freshwater flatworm with eyespots and strong regeneration is used in the lab. What should the student write in the answer sheet?
Correct Answer: C. Planaria
In museum study, a juvenile roundworm increases in size by shedding its old cuticle several times. The specimen or feature is best linked with:
Correct Answer: B. ecdysis
A lab observation notes that gills, anus, and excretory openings of many molluscs open into a space under the mantle. The observation points to:
Correct Answer: A. mantle cavity
For semester exam preparation, consider this situation: amoeba carries out feeding, movement, digestion, and reproduction within a single cell. The correct conclusion is:
Correct Answer: A. protoplasmic level of organization
A zoology student builds a phylogenetic tree and wants evidence that two groups share a recent ancestor. The best answer is:
Correct Answer: C. shared derived characters
A diagram in the course handout shows that a laboratory slide shows an irregular cell extending temporary finger-like projections to move and capture food. Identify the related structure or process.
Correct Answer: A. pseudopodia
During a Zoology practical, a museum label needs the most specific basic taxonomic rank for a named animal population. Select the most accurate identification.
Correct Answer: D. species
While comparing invertebrate groups, a slipper-shaped protozoan swims rapidly because its body is covered with short hair-like structures. The feature being tested is:
Correct Answer: B. cilia
A student is revising Animal Diversity-I: an animal can be divided into similar halves by several planes passing through its central axis. What should the student write in the answer sheet?
Correct Answer: B. radial symmetry
In museum study, a green unicellular organism moves through pond water by a long whip-like structure. The specimen or feature is best linked with:
Correct Answer: B. flagellum
In a specimen-based viva, the examiner describes this case: a worm-like animal moves actively in one direction and has a clear anterior end. Choose the concept that fits it best.
Correct Answer: C. bilateral symmetry