Free Biodiversity and Variety of Life MCQs with Answers
3,130 Biodiversity and Variety of Life MCQs from Biology, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.
Biological classification uses taxonomic ranks, binomial nomenclature and shared characteristics to organize life into kingdoms. The major groups include prokaryotes, protists, fungi, plants and animals, with comparisons based on cell type, cell wall, nutrition, body organization, reproduction and evolutionary relationships; prokaryotes lack a membrane-bound nucleus.
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- A. Nephron
- B. Protonephridia
- C. Metanephridia
- D. Malpighian tubes
Explanation: Malpighian tubules are the primary excretory organs in arthropods, including:1. Insects (e.g., beetles, flies, bees)2.
Correct answer: Malpighian tubes- A. Arthropoda
- B. Annelida
- C. Coelantrata
- D. Echinodermata
Explanation: Alternation of generations is a life cycle characteristic of the phylum Cnidaria, which includes Jellyfish,Corals,Sea anemones,Hydra
Correct answer: Coelantrata- A. Arthropoda
- B. Mammals
- C. Mollusca
- D. Nematodes
Explanation: Correct, as this phylum includes insects, crustaceans, and arachnids, making it the largest animal group.
Correct answer: Arthropoda- A. Workers
- B. Drones
- C. Zooplanktons
- D. Zooids
Explanation: Correct, because coelenterates like corals and siphonophores have specialized individuals called zooids that perform different functions.
Correct answer: Zooids- A. Blood of sheep
- B. Large intestine of sheep
- C. Liver and bile duct of sheep
- D. Stomach of sheep
Explanation: Liver and bile duct of sheep - Correct. Fasciola hepatica (liver fluke) resides in the liver and bile ducts, causing liver rot.
Correct answer: Liver and bile duct of sheep- A. Chordates
- B. Arthropods
- C. Annelida
- D. Mollusca
Explanation: Arthropods - Correct. Arthropods, such as insects, crustaceans, and arachnids, have jointed appendages and a chitinous exoskeleton.
Correct answer: Arthropods- A. Lungs
- B. Nasal
- C. Glottis
- D. Trachea
- E. Nostrils
Explanation: The correct answer is A Lungs. In frogs, the process of respiration involves the use of both the nostrils and the lungs.
Correct answer: Lungs- A. Echinodermata
- B. Porifera
- C. Aschelminthes
- D. Cnidaria
- E. Platyhelminthes
Explanation: The correct answer is Platyhelminthes. Option E The classes Turbellaria, Trematoda, and Cestoda belong to the phylum Platyhelminthes.
Correct answer: Platyhelminthes- A. For agricultural pest
- B. For silk worm
- C. For paper industry
- D. For sericulture pest
Explanation: Achatina fulica Is a giant snail that is a dangerous agricultural pest. So Option A is the correct answer.
Correct answer: For agricultural pest1310. Water vascular system or ambulacral system is a unique and complex system specially present in?
- A. Sponges
- B. Arthropods
- C. Echinoderms
- D. Fishes
Explanation: Echinoderms, which include organisms like starfish, sea urchins, and sea cucumbers, possess a unique and complex system called the water…
Correct answer: Echinoderms- A. Annelida
- B. Coelenterata
- C. Nematoda
- D. Platyhelminthes
Explanation: Roundworms belong to the phylum Nematoda. Roundworms, also known as nematodes, are unsegmented, cylindrical worms that can be found in a…
Correct answer: Nematoda1312. Silver fish is a/an?
- A. Insect
- B. Mollusc
- C. Jawless fish
- D. Cartilaginous fish
Explanation: Silverfish is an insect. It is a small, wingless insect with a silver-gray color and a distinctive fish-like shape.
Correct answer: Insect- A. Flat worms
- B. Sponges
- C. Cnidarians
- D. Round worms
Explanation: Sponges, also known as Porifera, are the simplest multicellular animals. They lack true tissues and organ systems.
Correct answer: Sponges- A. Protozoa
- B. Parazoa
- C. Metazoa
- D. Nanozoa
Explanation: Protozoa are unicellular, heterotrophic, eukaryotic organisms comprising four organisation types: amebae, flagellates, ciliates, and…
Correct answer: Protozoa- A. Little ring
- B. Segmented body
- C. Thread
- D. Hollow
Explanation: Annelid, phylum name Annelida, also called a segmented worm, is a member of a phylum of invertebrate animals that are characterised by the…
Correct answer: Little ring- A. Hirudo
- B. Unio
- C. Sepia
- D. Loligo
Explanation: Hirudo is a genus of segmented worms commonly known as leeches. Leeches are not soft-bodied animals, as they have a cylindrical, elongated…
Correct answer: Hirudo- A. Tennis ball-sized
- B. Ladle-sized
- C. Basketball-sized
- D. Hockey ball-sized
- E. Teaspoon-sized
Explanation: The correct answer is Option C: Basketball-sized. This size of sponge provides the necessary surface area and volume to handle the…
Correct answer: Basketball-sized- A. True Pods
- B. Pseudopodia
- C. Setae
- D. Peritrichous flagella
Explanation: Locomotion in segmented worms, such as earthworms, occurs through a combination of muscular contractions and the movement of their…
Correct answer: Setae- A. Protozoa
- B. Coelenterata
- C. Cnidarian
- D. Porifera
- E. Platyhelminthes
Explanation: The ladder-like nervous system in flatworms features a centralized cerebral ganglion (brain) at the front, with two longitudinal nerve…
Correct answer: Platyhelminthes- A. Tapeworm
- B. Earthworm
- C. Jellyfish
- D. Snail
- E. Oyster
Explanation: Oysters are often considered ambisexual due to their ability to change sex during their lifecycle, starting as males and becoming females…
Correct answer: Oyster