Free Kingdom Animalia MCQs with Answers

• A. Platyhelminthes
• B. Annelids
• C. Protozoa
• D. Porifera

Explanation: Sycon is an example of Porifera. Porifera is a phylum of animals that are also known as sponges.

• A. Earthworm
• B. Scorpions
• C. Fish
• D. All of these

Explanation: Scorpions use structures known as book lungs for respiration. Book lungs are respiratory organs found in various arachnids, including…

• A. Porifera
• B. Arthropoda
• C. Chordata
• D. Mollusca

Explanation: The second largest phylum of invertebrates is the Mollusca. Molluscs are a diverse group of animals that includes snails, clams…

• A. Hemichordata
• B. Urochordata
• C. Vertebrata
• D. Cephalochordata

Explanation: Notochord code occurs throughout life and all through the length of the body in cephalochordates.

• A. Anthozoa
• B. Hydrozoa
• C. Scyphozoa
• D. Calcerea

Explanation: Calcarea is a group that does not contain polyps. Calcarea is a subclass of the phylum Porifera, which includes sponges.

• A. Parietal mesoderm
• B. Visceral mesoderm
• C. Mesoderm
• D. Both a and b

Explanation: Coelom is a fluid-filled cavity lined by a mesodermal epithelium called mesothelium.

• A. Rhabditis
• B. Ancylostoma duodenale
• C. Taenia solium
• D. Enterobius vermicularis

Explanation: Pinworm is a common name for Enterobius Vermicularis.

• A. Neomyxine
• B. Petromyzon
• C. Eptatretus
• D. Myxine

Explanation: The jawless fish that lays eggs in fresh water and its ammocoetes larvae after metamorphosis and returns to the ocean is Petromyzon.

• A. Exoskeleton
• B. Eyes
• C. Segmentation
• D. Bilateral symmetry

Explanation: The exoskeleton, or outer skeleton, is a key characteristic of insects that has contributed significantly to their diversification on…

• A. Pristis
• B. Torpedo
• C. Trygon
• D. Scoliodon

Explanation: The marine cartilaginous fish that can produce electric current is Torpedo. It is also known as the electric ray.

• A. Annelida
• B. Arthropoda
• C. Porifera
• D. Cnidaria

Explanation: Option A: This is the phylum of invertebrate animals thus this is the wrong option.Option B: This is the feature of a bilaterally…

• A. Spiral and determinate
• B. Spiral and indeterminate
• C. Radial and determinate
• D. Radial and indeterminate

Explanation: Option A: In spiral cleavage the division of cells in the developing embryo is in a spiral manner and blastomeres are not formed.

• A. Annelida
• B. Coelenterates
• C. Echinodermata
• D. Platyhelminthes

Explanation: Flame cell/solenocytes are the main excretory structures of Platyhelminthes.OPTION A: Nephridia are the excretory organs in…

• A. Branching
• B. Symmetry
• C. Spicules
• D. Reproduction

Explanation: OPTION A: Phylum Porifera is not classified based on branching. Sponge species within this phylum can exhibit different growth forms…

• A. Aname
• B. Anemia
• C. Anima
• D. None of these options is correct

Explanation: The word "animal" comes from the Latin word, anima, meaning 'having breath', 'having soul' or 'living being'.

• A. Kingdom
• B. Sub-kingdom
• C. Phylum
• D. Class

Explanation: The nematodes or roundworms constitute the phylum Nematoda, with plant-parasitic nematodes also known as eelworms.

• A. Starfish
• B. Jellyfish
• C. Cuttlefish
• D. Catfish

Explanation: Catfish are a diverse group of ray-finned fish. So, option D is the corrrect answer.

• A. Nematods
• B. Platyhelminthes
• C. Echinodermata
• D. None of these options are correct

Explanation: Annelids are the first group of invertebrates to have developed a closed circulatory system, and is not given as an option hence "D" is…

• A. Unicellular
• B. Triploblastic
• C. Both Options A and B are correct
• D. Diploblastic

Explanation: d) Diploblastic, The correct answer is "d) Diploblastic." Animals of the grade Radiata are diploblastic, which means they have two primary…

• A. Dugesia
• B. Fasciola
• C. Taenia
• D. All of these options are correct

Explanation: a) Dugesia, This option is correct. Dugesia, also known as the planarian or freshwater flatworm, is a free-living example of…