While comparing invertebrate groups, hydra digests food in a central cavity that has a single opening used for both ingestion and egestion. The feature being tested is:
Correct Answer: B. gastrovascular cavity
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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
For semester exam preparation, consider this situation: a hydra captures prey using specialized stinging cells on its tentacles. The correct conclusion is:
Correct Answer: D. cnidocytes
A lab observation notes that a sponge lacks a digestive cavity, so food particles are processed inside cells. The observation points to:
Correct Answer: A. intracellular digestion
In a specimen-based viva, the examiner describes this case: between the outer and inner cell layers of a sponge lies a gelatinous matrix containing amoeboid cells and skeletal elements. Choose the concept that fits it best.
Correct Answer: C. mesohyl
A student is revising Animal Diversity-I: the thin outer covering of a sponge is formed by flattened cells. What should the student write in the answer sheet?
Correct Answer: C. pinacocytes
During a Zoology practical, a sponge broken into small pieces can reorganize living cells into a functional individual. Select the most accurate identification.
Correct Answer: C. regeneration
Mobile amoeboid sponge cells digest food, transport nutrients, and can develop into other cell types. The best answer is:
Correct Answer: A. archaeocytes
A learner makes a note: a large sponge has many flagellated chambers and a highly folded canal system that increases feeding surface area. The missing scientific idea is:
Correct Answer: A. leuconoid canal system
In museum study, most sponge bodies cannot be divided into equal halves through a fixed plane. The specimen or feature is best linked with:
Correct Answer: A. asymmetry
While comparing invertebrate groups, a sponge obtains nutrition by pumping water and trapping suspended particles. The feature being tested is:
Correct Answer: D. filter feeding
A diagram in the course handout shows that a freshwater sponge survives an unfavorable season by forming resistant internal buds. Identify the related structure or process.
Correct Answer: A. gemmules