Which organ filters blood and removes waste products?

Last Updated: 26 Jun 2026

A reliable solution begins by identifying the organ, tissue, cell, hormone, nutrient, pathogen, or biological process named in the stem and then linking it with its precise function or defining feature. The human body works through coordinated organ systems. The digestive system processes food and absorbs nutrients; the respiratory system exchanges oxygen and carbon dioxide; the circulatory system transports gases, nutrients, hormones, and wastes; the excretory system maintains water, salt, and acid–base balance; the nervous and endocrine systems coordinate responses; and the skeletal, muscular, immune, and reproductive systems perform specialised roles. Questions may also test blood components, vitamins, glands, sense organs, communicable diseases, and deficiency disorders.

ALiver

BSpleen

CKidney

DLung

Correct Answer: KidneyYour Answer: C

Explanation

nd removes waste products? Liver is incorrect because it refers to a different organ, substance, process, or medical association. Spleen is also incorrect; it may be biologically important, but its principal role or defining feature is not the one being tested here. Lung is incorrect because its function, source, target, or disease relationship does not match the question. Decide whether it concerns anatomy, physiology, blood, hormones, vitamins, immunity, pathogens, or disease. Then recall the exact source–function or deficiency–disorder pair and eliminate neighbouring concepts. Do not confuse an organ that produces a substance with an organ on which that substance acts, or a vector with the organism that causes a disease. Therefore option C, Kidney, is factually consistent with the stem, the marked correct index, and the explanation. Kidneys filter blood and remove waste products as urine. Each kidney contains about 1 million nephrons which are filtering units.

Important Notes

s Kidney, corresponding to option C. The answer field, correct index, and both explanations must remain aligned.
Read the complete stem and identify the exact demand: organ, gland, hormone, cell, tissue, nutrient, enzyme, pathogen, vector, deficiency disease, body fluid, or physiological function.
Revise every structure with its location and principal function. For example, separate production from storage, transport from exchange, filtration from detoxification, and control from execution.
Learn endocrine facts as source–hormone–target–effect–disorder chains. Common errors arise when students confuse the gland producing a hormone with the organ affected by it.
Learn nutrition facts as nutrient–source–function–deficiency pairs. Vitamins and minerals can have several roles, but SSC questions usually ask the best-known primary association.

Test your SSC CGL Human Body knowledge

Start Topic Test

FAQ

SSC CGL Human Body FAQs

Common questions and clear answers for this topic.

Which body systems are most important for SSC CGL preparation?

The digestive, circulatory, nervous, and skeletal systems appear most frequently, along with sensory organs and basic endocrine functions.

How many bones are there in the human body, and is this commonly asked?

Yes, the human body has 206 bones, and questions about the largest, smallest, and total bone count appear fairly often.

What kind of blood-related questions come up in SSC CGL?

Questions usually cover blood group compatibility, the role of platelets in clotting, and basic facts about blood pressure and heart function.

Do I need detailed biochemistry knowledge for the human body section?

No, most questions focus on what each organ does and why, rather than the detailed biochemical processes behind it.

How can I retain human body facts more effectively for the exam?

Linking facts to real-life observations, like why pulse is checked at the wrist, makes them easier to recall than memorizing textbook lines.

Same Topic MCQs

View All

Which substance is responsible for the transmission of nerve impulses at synapses?The human eye can distinguish approximately how many colors?Which part of the brain regulates body temperature?