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. Tunic
- B. Cell wall
- C. Cuticle
- D. Pellicle
Explanation: The bodies of Urochordates also known as sea tunicates or sea squirts is covered with a sac like tunic made of leathery material called…
Correct answer: Tunic- A. Opossum
- B. Dolphin
- C. Echidna
- D. Duckbill platypus
Explanation: Marsupium is a characteristic feature of the sub-class metatheria under class mammalia.
Correct answer: Opossum- A. Green
- B. Brown
- C. Red
- D. Colorless
Explanation: A more correct term for the circulatory fluid in arthropods in haemolymph.
Correct answer: Colorless- A. Star fish
- B. Snail
- C. Octopus
- D. Sepia
Explanation: The largest invertebrate brain is the Octupus belonging to Class Cephalopoda of Phylum Mollusca.
Correct answer: Octopus- A. Cnidocytes
- B. Gastrozooids
- C. Hydrozoids
- D. Mesoglea
Explanation: The explanation for this question will be added soon!
Correct answer: Cnidocytes- A. Hemoglobin
- B. Haemoerythrin
- C. Haemocyanin
- D. Both B and C
Explanation: The blue color of a spider's blood is typically due to the presence of haemocyanin (option c).
Correct answer: Haemocyanin- A. Detrital organic particles
- B. Phytoplanktons
- C. Zooplankton and small animal
- D. All of these
Explanation: 80% of their food consists of detrital organic particles.
Correct answer: Detrital organic particles- A. Calcium carbonate
- B. Silica
- C. Chitin
- D. Lignin
Explanation: The exoskeleton of coelenterates, which includes corals and other related organisms, is primarily made up of calcium carbonate.
Correct answer: Calcium carbonate- A. Annelida
- B. Nematoda
- C. Porifera
- D. Platyhelminthes
Explanation: Porifera does not contain any parasitic species.
Correct answer: Porifera- A. Hemoglobin
- B. Haemocyanin
- C. Myoglobin
- D. None of the above
Explanation: Option B is correct.The respiratory pigment present in Molluscs is hemocyanin.
Correct answer: Haemocyanin971. Deuterostomes have:
- A. Spiral Cleavage
- B. Mouth develop form blastopore
- C. Mesoderm is formed form developing gut
- D. Schizocoelous
Explanation: Option C is correct.Deuterostomes have mesoderm formed from the developing gut.
Correct answer: Mesoderm is formed form developing gut- A. Mallard
- B. Leech
- C. Cockroach
- D. Star fish
Explanation: Option C is correct.Malpighian tubules are characteristic of cockroaches.
Correct answer: Cockroach- A. Paleozoic
- B. Mesozoic
- C. Cenozoic
- D. Proterozoic
Explanation: Option C is correct. Mammals dominated the planet during the Cenozoic Era, which began about 66 million years ago.
Correct answer: Cenozoic- A. Mollusca
- B. Annelida
- C. Echinodermata
- D. Arthropoda
Explanation: Option D is corrrect.Periplaneta americana, also known as the American cockroach, belongs to the phylum Arthropoda.
Correct answer: Arthropoda- A. Hydro carbons
- B. Organic molecules
- C. Chemical
- D. All of these
Explanation: An animal's survival does depend on its ability to take chemicals from the environment.
Correct answer: Chemical- A. Cell wall
- B. Prostomium
- C. Nucleolus
- D. Parapodia
Explanation: Option D is correct. Chitinous setae are the locomotory organs of annelids.
Correct answer: Parapodia- A. Tentacles
- B. Palps
- C. Wings
- D. All of these
Explanation: Option B is correct.Polychaeta have palps. Palps are paired, sensory organs that are located on the head of polychaetes.
Correct answer: Palps- A. Intestinal parasite
- B. Blood parasite
- C. Stomach parasite
- D. Ureteral parasite
Explanation: It is an intestinal parasite of humans. It is the most common human worm infection .
Correct answer: Intestinal parasite- A. Pons
- B. Medulla
- C. Cerebrum
- D. Cerebellum
Explanation: D is correct. Aves have advance cerebellum.
Correct answer: Cerebellum- A. Prototherians
- B. Metatherian
- C. Eutherians
- D. All of these
Explanation: Eutheria are a group of mammals consisting of placental mammals. The placental mammals include such diverse forms as whales, elephants…
Correct answer: Eutherians