Kingdom Animalia MCQs for MDCAT Practice

Biology section, Kingdom Animalia chapter. Up to eight free sample questions, each with the correct answer and a worked explanation. The full chapter opens in the app.

1. Question 1
   Spiders belong to class:
   • ACrustacea
   • BMyriapoda
   • CArachnida (correct answer)
   • DHexapoda
   Correct answer: C

   Spiders, characterized by eight legs and two body segments, are classified under the class Arachnida within the phylum Arthropoda.
2. Question 2
   Which of the following statements is NOT a feature of restriction fragment length polymorphisms?
   • AThey can be used to detect single gene mutations in human DNA.
   • BThey can be used prenatally to analyze fetal cells for genetic disorders.
   • CThey can be used to amplify large quantities of a single gene through use of the polymerase chain reaction. (correct answer)
   • DThey can be used to detect variation in DNA sequences among individuals.
   Correct answer: C

   RFLPs detect DNA variations by fragment size after restriction enzyme digestion, not by PCR amplification of specific genes.
3. Question 3
   Kidney of adult rabbit is:
   • APronephros
   • BMetanephros (correct answer)
   • CMesonephros
   • DOpisthonephros
   Correct answer: B

   Adult rabbits possess metanephric kidneys, which develop later and are the permanent, functional kidneys in amniotes, including mammals.
4. Question 4
   The pneumatic bone is found in:
   • Asharks
   • BRanas
   • CPigeons (correct answer)
   • DWhales
   Correct answer: C

   Pneumatic bones, hollow and air-filled, are an adaptation for flight, found in birds like pigeons to reduce weight.
5. Question 5
   Leptocardii is a group of:
   • AUrochordata
   • BCephalochordata (correct answer)
   • CVertebrata
   • DMollusca
   Correct answer: B

   Leptocardii, characterized by its lance-shaped body and marine habitat, is synonymous with the subphylum Cephalochordata within the phylum Chordata.
6. Question 6
   Which one of the following is not an acoelomate?
   • AAurelia
   • BChaetopterus (correct answer)
   • CEuplectella
   • DTaenia
   Correct answer: B

   This question tests your understanding of coelom types in different animal phyla, specifically identifying organisms that are not acoelomates.
7. Question 7
   Which type of tissue correctly matches with its location?
   • ATransitional epithelium - tip of the nose
   • BCuboidal epithelium - Lining of the stomach
   • CSmooth muscle - Wall of intestine (correct answer)
   • DAreolar tissue - Tendons of the nose
   Correct answer: C

   This question assesses the student's knowledge of tissue types and their specific locations within the animal body, a fundamental concept in histology.
8. Question 8
   Which is not the characteristic of triploblasts?
   • AThey may be coelomate, pseudocoelomate, or acoelomate
   • BThey are included in grade Bilateria
   • CAll of them have a digestive system
   • DAll of them have a blood vascular system (correct answer)
   Correct answer: D

   Triploblasts are characterized by having three germ layers and bilateral symmetry, but not all possess a circulatory system.

Read the full Kingdom Animalia chapter notes: Kingdom Animalia notes. Or browse every chapter.