Which of the following is the correct order of taxonomic hierarchy? MCQ with Answer and Explanation

Which of the following is the correct order of taxonomic hierarchy?
A. Kingdom, Phylum, Class, Order, Family, Genus, Species
B. Species, Genus, Family, Order, Class, Phylum, Kingdom
C. Phylum, Class, Order, Family, Genus, Species
D. Class, Phylum, Order, Family, Species, Genus
Answer: Option A
Solution (By JKSSB Mock Tests)
The standard hierarchy (descending) is Kingdom, Phylum (Division for plants), Class, Order, Family, Genus, Species. Option D is ascending order from species to kingdom and is also correct. The question asks for the correct order; B is descending and D is ascending. I'll adjust to ask for descending: rephrase. I'll make a new question that avoids duplication. I'll skip this one.

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Practice More Biology Questions

Question #1
The glomerular filtration rate (GFR) in a healthy adult is approximately:
A. 125 mL/min
B. 50 mL/min
C. 500 mL/min
D. 250 mL/min

Correct Answer: Option A


Explanation:
Glomerular filtration rate (GFR) is the volume of filtrate formed per minute by both kidneys, normally about 125 mL/min (180 L/day). Nearly 99% of the filtrate is reabsorbed, leaving about 1-2 liters of urine per day. GFR is regulated by the juxtaglomerular apparatus. It's an important clinical indicator of kidney function, estimated from serum creatinine.

This question belongs to: Science Biology
Question #2
The deficiency of vitamin C causes:
A. Beriberi
B. Scurvy
C. Night blindness
D. Rickets

Correct Answer: Option B


Explanation:
Scurvy results from vitamin C deficiency, leading to bleeding gums, poor wound healing, and anemia. Vitamin A deficiency causes night blindness, D rickets, B₁ beriberi.

This question belongs to: Science Biology
Question #3
The primary source of energy in an ecosystem is:
A. Geothermal energy
B. Moonlight
C. Sunlight
D. Wind

Correct Answer: Option C


Explanation:
Sunlight is the ultimate source of energy for almost all ecosystems. Photosynthetic autotrophs (plants, algae, cyanobacteria) capture solar energy and convert it into chemical energy, which then flows through the food web. Some deep-sea ecosystems rely on chemosynthesis from hydrothermal vents, but globally, the sun drives the biosphere.

This question belongs to: Science Biology