Free Biodiversity and Variety of Life MCQs with Answers

• A. Nephridia
• B. Flame cells
• C. Malpighian tubules
• D. Nephron

Explanation: The excretory system of Platyhelminthes consists of flame cells because these specialized cells help remove metabolic waste from the…

• A. Gastropoda
• B. Cephalopoda
• C. Bivalvia
• D. None of these

Explanation: The garden snail is a part of the class Gastropoda within the phylum Mollusca.

• A. Spicules
• B. Choanocytes
• C. Gemmules
• D. Both Options A and B are correct

Explanation: Spicules are the structural components of a sponge, or the "bricks," and the shapes, sizes, and composition are unique for each…

• A. Acoelomates
• B. Pseudococlomates
• C. Aeoclomates and Pscudocoelomates
• D. Coelomates

Explanation: Acoelomates are those animals in which there is no body cavity or space between body wall and digestive system.

• A. Hydra
• B. Euplectella
• C. Blood fluke
• D. Tapeworm
• E. A and b

Explanation: Hydra is another example of an animal that doesn't show division of labor. It has limited cell specialization and lacks distinct organs.

• A. Stipules
• B. Brails
• C. Spine
• D. Spicules

Explanation: Based on the explanations provided, the correct answer to the question is option D) Spicules.

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

Explanation: Yes, the word animal is derived from the Latin word anima, which means "breath, spirit, life".

• A. Presence of true coelom and metamerism
• B. Absence of true coelom and metamerism
• C. Presence of true coelom but the absence of metamerism
• D. Absence of true coelom but thepresence of metamerism

Explanation: Ascaris does not have a true coelom. Ascaris is an example of a pseudocoelomate organism.

• A. Zygomycota
• B. Basidiomycota
• C. Deuteromycota
• D. Ascomycota

Explanation: Mushrooms are classified under Basidiomycota, known as club fungi.

• A. Autotrophs
• B. Saprotrophs
• C. Parasites
• D. Predators

Explanation: Fungi that absorb nutrients directly from the living host cytoplasm are called Parasites.

• A. 2-3
• B. 2-5
• C. 5-7
• D. 2-9

Explanation: Fungi can survive in a wide pH range from 2 to 9.

• A. Basidiomycota
• B. Ascomycota
• C. Deutromycota
• D. Zygomycota

Explanation: These are common molds that belong to the Zygomycota division.

• A. Zygomycota
• B. Ascomycota
• C. Basidiomycota
• D. Deuteromycota

Explanation: Mushrooms are fruiting bodies of Basidiomycota.

• A. Danger stools
• B. Toad stools
• C. Break stools
• D. Dark stools

Explanation: Poisonous mushrooms commonly called toadstools.

• A. Endophytic Fungi
• B. Mycorrhizal fungi
• C. Ergot
• D. Rhodotorula

Explanation: Mycorrhizal fungi are more directly linked to sol fertility.

• A. Aspergillus flavus
• B. Candida albicans
• C. Agaricus bisporus
• D. Histoplasma capsulatum

Explanation: The common button mushroom is scientifically named Agaricus campestris.

• A. Orange-yellow colored disease spots on their host surface
• B. Dusty spore masses that resemble soot
• C. Rust fungi have fruiting bodies
• D. Puccinia species

Explanation: Rust fungi produce orange-yellow, powdery lesions on infected plant surfaces that resemble rusted iron, which is why they are commonly…

• A. Bacteria
• B. Virus
• C. Fungus
• D. Arthropod

Explanation: Athlete's foot is an infection of the feet caused by fungus. The medical term is tinea pedis or ringworm of the foot.

• A. Trichinella spiralis
• B. Ascaris lumbricoides
• C. Ancylostoma duodenale
• D. Enterobius vermicularis

Explanation: Trichinella spiralis is a nematode parasite, occurring in rodents, pigs, horse, bears and humans, and is responsible for the disease…

• A. Sarcomeres
• B. Candidiasis
• C. Lovastatin
• D. Aspergillus

Explanation: Excess growth of Candida fungus in the mouth causes a condition known as "Oral thrush" or "Oral Candidiasis".