Free Biodiversity and Variety of Life MCQs with Answers

• A. Diploblastic
• B. Triploblastic
• C. Haploid
• D. Acoelomate

Explanation: Ascaris is a genus of parasitic nematode worms known as the "small intestinal roundworms" that can infect the human small intestine.

• A. Nervous System
• B. Alimentary canal lining
• C. Muscular and skeletal system
• D. Mouth

Explanation: During development, the mesoderm layer gives rise to the muscular system, skeletal system, circulatory system, and other organs such as…

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

Explanation: Polymorphism refers to occurrence of more than one individual in a single organism, and is a characteristic feature of Cnidarians

• A. Tapeworm
• B. Hookworm
• C. Pinworm
• D. Roundworm

Explanation: Tapeworm infection is caused by eating improperly cooked beef which usually contains the tapeworm "Taenia Saginata."

• A. Intestine
• B. Kidney
• C. Liver
• D. Blood

Explanation: Schistosoma parasites can penetrate the skin of a person wading through contaminated water.

• A. Coelom
• B. Mesoderm
• C. Endoderm
• D. Mesoglea

Explanation: Coelom is a cavity between the body wall and alimentary canal which is lined by mesoderm.

• A. Ectoderm
• B. Mesoderm
• C. Endoderm
• D. Mesoglea

Explanation: The endoderm is the source of epithelial lining of the digestive tract along with pancreas and gall-bladder.

• A. Intestine
• B. Caecum
• C. Stomach
• D. Rectum

Explanation: Ascaris lumbricoides is an intestinal parasite of humans. Their common name is roundworms.

• A. Fish
• B. Pig
• C. Anemone
• D. Coral

Explanation: Pigs serve as an intermediate host for Taenia solium; humans are infected when they ingest an immature tapeworm(a cysticercus) in…

• A. Squid
• B. Laligo
• C. Slug
• D. Oyster

Explanation: Squid is the common name of Loligo pealeii.

• A. Angiosperms
• B. Sponges
• C. Marine Algae
• D. Fungus like protists

Explanation: Venous flower basket belong to sponges ( phylum porifera).

• A. Buffalo
• B. Mule
• C. Elephant
• D. Yak

Explanation: Draught animals are used for agricultural tasks like carrying heavy weighted objects or loads.

• A. Ticks
• B. Honey bee
• C. Beetle
• D. Wasp

Explanation: Ticks are not insects because they are arachnids.

• A. Presence of wings
• B. Jointed appendages
• C. Haemocoel
• D. Chitinous exoskeleton

Explanation: Phylum Arthropoda doesn't possess wings.

• A. Prototheria
• B. Eutheria
• C. Metatheria
• D. Monotremata

Explanation: Opossums and koala bears belong to subclass metatheria.

• A. Mytilus edulis
• B. Loligo peali
• C. Anodonta grandis
• D. Anodonta bairdi

Explanation: Freshwater mussels are an essential component of our rivers and streams.

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

Explanation: Of all animals it is estimated that well over 90% are invertebrates. Of all invertebrates, arthropods are by far the most numerous.

• A. Flatworms
• B. Annelida
• C. Cnidaria
• D. Sponge

Explanation: Sponges are the most basic form of a multicellular animal. They lack the nerves and digestive systems seen in other animals, relying on…

• A. Blastopore forms the anus
• B. They are both aquatic
• C. They have a well developed circulatory system
• D. They have dorsal nerve cord

Explanation: Both hemichordates and echinoderms are deuterostomes, i.e. blastopore develops to form the anus.

• A. They all show bilateral symmetry
• B. They show radial as well as bilateral symmetry
• C. They are all protostomes
• D. They are all deuterostomes

Explanation: Triploblastic animals are included in a phyla which have been placed in grade bilatera. This means all of them are bilateral in nature.