The organ of the human body that filters blood and forms urine is the: MCQ with Answer and Explanation

The organ of the human body that filters blood and forms urine is the:
A. Kidney
B. Heart
C. Liver
D. Lung
Answer: Option A
Solution (By JKExamLibrary)
Kidneys are bean-shaped organs that filter waste products, excess water, and electrolytes from the blood to form urine. The liver processes nutrients and toxins, the heart pumps blood, the lungs exchange gases.

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Practice More Biology Questions

Question #1
Consider statements about animal husbandry: 1. MOET is used for cattle improvement. 2. Artificial insemination allows the use of superior bull semen. 3. Crossbreeding reduces genetic diversity. Which are correct?
A. 2 and 3 only
B. 1 and 3 only
C. 1 and 2 only
D. 1, 2 and 3

Correct Answer: Option C


Explanation:
Multiple Ovulation Embryo Transfer (MOET) is a reproductive technology used in cattle to rapidly multiply the offspring of superior females. Artificial insemination (AI) allows farmers to use semen from genetically superior bulls without keeping the animal, improving herd quality. Crossbreeding involves mating animals of different breeds to combine desirable traits and increase heterozygosity, thereby increasing, not reducing, genetic diversity in the population. Thus, statements 1 and 2 are correct.

This question belongs to: Science Biology
Question #2
In a food chain, herbivores are called:
A. Primary consumers
B. Tertiary consumers
C. Producers
D. Secondary consumers

Correct Answer: Option A


Explanation:
Herbivores feed directly on producers, occupying the second trophic level. Carnivores that eat herbivores are secondary consumers.

This question belongs to: Science Biology
Question #3
The organ that removes old red blood cells and stores iron is the:
A. Bone marrow
B. Spleen
C. Liver
D. Kidney

Correct Answer: Option D


Explanation:
The spleen filters blood, removing aged or damaged RBCs, recycles iron, and stores platelets. The liver also processes hemoglobin products, but the spleen is the primary organ for RBC removal. The kidneys filter blood but don't remove RBCs.

This question belongs to: Science Biology