A learner makes a note: a large intestinal roundworm infects humans and may cause nutritional problems or intestinal blockage. The missing scientific idea is:
Correct Answer: B. Ascaris lumbricoides
MCQ Collection
Animal Diversity-I (Invertebrates) MCQs
Practice Animal Diversity-I (Invertebrates) questions with answers and explanations.
For semester exam preparation, consider this situation: during development of a snail, the visceral mass rotates so the mantle cavity shifts toward the anterior region. The correct conclusion is:
Correct Answer: C. torsion
A student is revising Animal Diversity-I: a sponge body wall has many tiny pores through which water first enters. What should the student write in the answer sheet?
Correct Answer: C. ostia
In museum study, a sea anemone has a cylindrical body attached to the substrate with tentacles directed upward. The specimen or feature is best linked with:
Correct Answer: A. polyp form
A lab observation notes that a ribbon-like intestinal parasite has proglottids and lacks a digestive tract. The observation points to:
Correct Answer: D. Taenia
A filarial worm blocks lymphatic vessels and may cause elephantiasis. The best answer is:
Correct Answer: A. Wuchereria bancrofti
A diagram in the course handout shows that a snail shell and internal organs show coiling and one-sided arrangement after development. Identify the related structure or process.
Correct Answer: A. asymmetrical adult body
In a specimen-based viva, the examiner describes this case: a prepared sponge slide shows needle-like mineral elements supporting the body. Choose the concept that fits it best.
Correct Answer: C. spicules
A learner makes a note: a jellyfish swims freely with an umbrella-shaped body and tentacles hanging downward. The missing scientific idea is:
Correct Answer: A. medusa form
For semester exam preparation, consider this situation: the anterior end of a tapeworm bears hooks or suckers that attach it to the host intestine. The correct conclusion is:
Correct Answer: B. scolex
During a Zoology practical, a human infection follows eating undercooked pork containing larvae encysted in muscle. Select the most accurate identification.
Correct Answer: D. Trichinella spiralis
While comparing invertebrate groups, a clam protects its soft body with left and right valves joined by a hinge ligament. The feature being tested is:
Correct Answer: B. two hinged shells