Free Kingdom Animalia MCQs with Answers
912 Kingdom Animalia MCQs from Biology, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.
Animals are multicellular, heterotrophic eukaryotes whose cells lack cell walls and chloroplasts, with specialised tissues in most groups. Coverage includes body symmetry, tissue layers, coelom, segmentation and levels of organisation, plus major phyla such as Porifera, Cnidaria, Platyhelminthes, Annelida, Arthropoda, Mollusca and Chordata.
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912 questions · page 36 of 46
- A. Protozoan
- B. Algae
- C. Slime molds
- D. Bacteria
Explanation: Protozoans are considered ancestors of animals because they transitioned to multicellular organisms early in evolution.
Correct answer: Protozoan- A. Crayfish
- B. Jellyfish
- C. Vertebrate
- D. Starfish
Explanation: Answer is "Vertebrate"Explanation: A sliver fish (Lepsima saccharina) is small primitive wingless insect.
Correct answer: Vertebrate- A. Development of adhesive organs
- B. Loss of digestive organs
- C. Loss of reproductive capacity
- D. Loss of unnecessary sense organs
Explanation: Parasitism is a relationship between two living organisms of different species in which one organism called a parasite obtains its food…
Correct answer: Loss of unnecessary sense organs- A. Amoeba proteus
- B. Trypanosoma gambiense
- C. Plasmodium vivax
- D. Paramecium caudatum
Explanation: Dimorphic nucleus means that two types of nuclei are present in P. caudatum - a large macronucleus and a small micronucleus.
Correct answer: Paramecium caudatum- A. Osmoregulation
- B. Reproduction
- C. Locomotion
- D. Digestion of food
Explanation: The function of contractile vacuole is osmoregulatory. Water in freshwater protozoa enters the organism by endosmosis and during feeding.
Correct answer: Osmoregulation- A. Australia
- B. Antarctica
- C. Africa
- D. America
Explanation: Penguins are a group of aquatic, flightless birds living almost exclusively in Antarctica.
Correct answer: Antarctica- A. Coelom
- B. Mesoderm
- C. Special transport system
- D. Coelomic fluid
Explanation: Acoelomates are triploblastic animals in which all the three germinal layers ectoderm. mesoderm and endoderm are present.
Correct answer: Mesoderm- A. Platyhelminthes
- B. Aschelminthes
- C. Molluscs
- D. Annelids
Explanation: Examples of acoelomates are found phylum Platyhelminthes, commonly known as flatworms.
Correct answer: Platyhelminthes- A. Mesoderm
- B. Epiderm
- C. Endoderm
- D. Ectoderm
Explanation: The coelom is a fluid-filled cavity which is lined by the mesoderm. It is present in between the gastrointestinal tract and the body wall.
Correct answer: Mesoderm- A. Tapeworm
- B. Liver fluke
- C. Aurelia
- D. Planaria
Explanation: This belongs to phylum platyhelminthes, class Cestoda, being exclusively endoparasite.
Correct answer: Tapeworm- A. Ectoparasite
- B. Facultative parasite
- C. Obligate parasite
- D. Endoparasite
Explanation: Endoparasites are parasites that live in the tissues and organs of their hosts, such as tapeworms, flukes, and protozoans of vertebrates.
Correct answer: Endoparasite- A. Nervous System
- B. Muscular and skeletal system
- C. Alimentary canal lining
- D. Mouth
Explanation: The mesoderm layer contributes to the development of the skeleton (bone and cartilage) and the muscular system.
Correct answer: Muscular and skeletal system- A. Porifera
- B. Annelida
- C. Cnidaria
- D. Nematodes
Explanation: Polymorphism is a notable feature of cnidarians. Many cnidarians have multiple forms within their life cycle, including the polyp and…
Correct answer: Cnidaria- A. Each body segment has two sets of male and female reproduction organs
- B. The digestive tract develops from endodermal cells in the embryo
- C. The body can be cut into two parts, which are mirror images of each other, in one plane only
- D. None of the above
Explanation: Based on the explanations provided, the correct answer to the question is option A) Each body segment has two sets of male and female…
Correct answer: Each body segment has two sets of male and female reproduction organs- A. Absence of mesoderm
- B. Absence of brain
- C. Coelom that is incompletely lined with a mesoderm
- D. Solid body without a cavity surrounding internal organs
Explanation: This is the correct characteristic of acoelomates. Acoelomates are organisms with a solid body plan, meaning they lack a fluid-filled body…
Correct answer: Solid body without a cavity surrounding internal organs- A. Sycon
- B. Leucosolenia
- C. Spongilla
- D. Euplectella
Explanation: "The explanation for this question will be added soon!".
Correct answer: Euplectella- A. A
- B. B
- C. C
- D. D
Explanation: Leeches belong to class hirudinea, are ceolomates and triphloblastic. So option A is correct. All other options are incorrect.
Correct answer: A- A. webbed toes
- B. thick fur on their bodies
- C. mammary glands to feed their new-borns
- D. the same opening for excretion and reproduction
Explanation: The characteristic of prototherians that provides evidence of mammalian evolution from reptiles is the presence of a cloaca.
Correct answer: the same opening for excretion and reproduction- A. Option A: Butterfly
- B. Option B: Starfish
- C. Option C: Human
- D. Option D: Crab
Explanation: Symmetry in biology refers to the balanced distribution of duplicate body parts or shapes.
Correct answer: Option B: Starfish- A. A
- B. B
- C. C
- D. D
Explanation: Sponges have multiple ostia through which water enters their body and single osculum through which water leaves their body.
Correct answer: B