Free Kingdom Animalia MCQs with Answers

281. These animals have three germinal layers but no coelom:

• A. Flat worms
• B. Round worms
• C. snails
• D. Chordates

Explanation: Flatworms and cnidarians are the only animals in the list that have three germinal layers but no coelom. Germinal layers are the three layers of cells that form the embryo of an animal. The three germinal layers are the ectoderm, the mesoderm, and the endoderm. Coelom is a fluid-filled cavity that surrounds the internal organs of an animal.

282. Which of the following are the first groups of invertebrates which have developed a closed circulatory system?

• A. Nematodes
• B. Annelids
• C. Arthropods
• D. Molluscs

Explanation: The first groups of invertebrates which have developed a closed circulatory system are Annelids.

283. Which statement is true about gastropods?

• A. Body is bilaterally symmetrical
• B. Both aquatic and land species breathe through lungs
• C. Triploblastic and acoelomates
• D. All of the above

Explanation: Body is bilaterally symmetrical is the only statement that is true about gastropods.

284. Which combination of class and its description is correct?

• A. Osteichthyes-a bony endoskeleton & gills covered by operculum
• B. Reptilia-lefi aortic arch & internal fertilization
• C. Nematoda-triploblastic & acoelomates
• D. Cephalopods-dorsal nerve cord & bilateral symmetry

Explanation: The correct combination of class and its description is Osteichthyes-a bony endoskeleton & gills covered by operculum.

285. Garden snail belongs to which class of Mollusca?

• A. Gastropoda
• B. Cephalpoda
• C. Myriapoda
• D. None of these

Explanation: The common examples are: i. Helix aspersa : It is commonly termed garden snail.

286. The Venus flower basket is also known as which of the following?

• A. Sycon
• B. Leucosolenia
• C. Spongilla
• D. Euplectella

Explanation: Euplectella is called Venus Flower Basket.

287. S -band locomotion is characteristically seen in which of the following?

• A. Bony fish
• B. Fish like mammals
• C. Cartilaginous fish
• D. All of these

Explanation: The explanation for this question will be added soon!

288. Which group of animals is not a deuterostome?

• A. Echinodermata
• B. Arthropoda
• C. Mollusca
• D. Both B and C

Explanation: Both option B and C are correct as they are not deuterostomes.

289. One similarity between annelids and arthropods:

• A. Closed circulatory system
• B. Nitrogenous waste product is uric acid
• C. Ventral nerve cord
• D. None of the above

Explanation: Ventral nerve cord is the common characteristic between both annelids and arthropods.

290. Polyps are:

• A. Cylindrical and nutritive
• B. Umbrella like and free swimming
• C. Tubular and nutritive
• D. Sessile and involve in sexual reproduction

Explanation: The explanation for this question will be added soon!