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 23 of 46
- A. Eagle
- B. Kiwi
- C. Duck
- D. Goat
- E. Ostrich
Explanation: Viviparous animals are those species that directly give birth to their offspring.
Correct answer: Goat- A. Ectoderm
- B. None of these
- C. Endoderm
- D. Mesoderm
Explanation: On the basis of germ layers, organisms are classified into two categories: Diploblastic Organisms: Have two layers namely ectoderm and…
Correct answer: Mesoderm- A. Eutherian
- B. Metatheria
- C. All mammals
- D. Protheria
Explanation: In eutherians, embryo complete its embryonic development in the uterus.
Correct answer: Eutherian- A. Arthropoda
- B. Mollusca
- C. Echinoderms
- D. Annelida
Explanation: Only echinoderms have a water vascular system (also known as the ambulacral system) that helps them in their living environment.
Correct answer: Echinoderms- A. 25
- B. 10
- C. 20
- D. 15
Explanation: A cockroach has 10 pairs of spiracles. In total there are 20 spiracles in a cockroach.
Correct answer: 10- A. Mesoderm
- B. Endoderm
- C. Mesenchyme
- D. Ectoderm
Explanation: In diploblastic organisms only two germinal layers i.e. endoderm and ectoderm are present and mesoderm is absent.
Correct answer: Mesoderm- A. All of these
- B. Eutheria
- C. Metatheria
- D. Prototheria
Explanation: All these classes of mammals have mammary glands through which they nourish their young ones.
Correct answer: All of these- A. All animals are ingestive heterotrophs
- B. All animals are eukaryotes
- C. It is the largest kingdom.
- D. All animals develop from the dissimilar gametes i.e. large sperm and the small egg
Explanation: The sperm is smaller in size than the ovum. A, B and C are true characteristics of animals.
Correct answer: All animals develop from the dissimilar gametes i.e. large sperm and the small egg- A. Each body segment has two sets of male and female reproductive 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 these
Explanation: Tapeworms do not have a digestive system and are obligate parasites, obtaining nutrients directly from their host.
Correct answer: The digestive tract develops from endodermal cells in the embryo- 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: Acoelomates lack a coelom (neither true nor false/pseudocoelom). Hence they lack a cavity surrounding internal organs and have a solid body.
Correct answer: Solid-body without a cavity surrounding internal organs- A. Arachnida
- B. Insecta
- C. Myriapoda
- D. Cephalopoda
Explanation: Centipedes belong to the class Myriapoda of Arthropoda. (myriapoda= many-legs)
Correct answer: Myriapoda- A. Annelida
- B. Mollusca
- C. Arthropoda
- D. Echinodermata
Explanation: The correct answer for this is "Echinodermata". Echinoderms, Chordates and Hemichordates all belong to deuterostomes which means that…
Correct answer: Echinodermata- A. Flesh fly
- B. Blue-ringed octopus
- C. Tarantula
- D. Hummingbird
Explanation: Tetrapods are a superclass of animals that include all four limbed vertebrates (backboned animals) constituting the classes Amphibia…
Correct answer: Hummingbird- A. Spiral and indeterminate
- B. Radial and indeterminate
- C. Radial and determinate
- D. Spiral and determinate
Explanation: A spiral and determinate cleavage is that in which the lines or planes of cleavage are not symmetrical between poles instead these are…
Correct answer: Spiral and determinate- A. Pigeon
- B. Elephant
- C. Sheep
- D. Humans
Explanation: Sheep, 'elephants, and humans are all viviparous, In viviparity, the individual doesn't lay eggs and the embryo is formed inside the…
Correct answer: Pigeon- A. Nematodes
- B. Arthropods
- C. Annelids
- D. Molluscs
Explanation: Annelids are the first and the only non-chordates to have a closed circulatory system.
Correct answer: Annelids- A. Amphibians
- B. Birds
- C. Prototherians
- D. Reptiles
Explanation: Eggs laid by snakes generally have leathery shells which often adhere to one another.
Correct answer: Reptiles- A. Centralized nervous system
- B. Partially centralized nervous system
- C. Diffuse nervous system
- D. Partially diffuse nervous system
Explanation: The diffuse nervous system is the most primitive nervous system. In the diffuse system, nerve cells are distributed throughout the…
Correct answer: Diffuse nervous system- A. Calcium
- B. Silica
- C. Both A and B
- D. None of these
Explanation: The skeletal structures of sponges are spicules and spongin fibres. Spicules are formed by carbonates of lime or silica in the form of…
Correct answer: Both A and B- A. The swimbladder of cartilaginous fish
- B. The swimbladder of bony fish
- C. The swimbladder of lobe-finned fish
- D. They evolved independently
Explanation: Lungfish have lungs that are derived from the swim bladder (an organ used for buoyancy in most bony fishes), which is connected to the…
Correct answer: The swimbladder of bony fish