Identifying the Incorrect Sentence: Child vs. Adult Bones

The question asks us to identify which statement comparing the bones of children and adults is factually incorrect. Let's analyze each option carefully:

Analyzing Statements About Bones

• Statement 1: "Number of bones is more in new born babies than fully grown adults"

  This statement is correct. Babies are born with around 270-300 bones, many of which are made of cartilage. As they grow, some of these bones fuse together. By adulthood, the typical number of bones is 206.

• Statement 2: "Bones of children are softer than that of adults"

  This statement is also correct. Children's bones contain more cartilage and have a higher proportion of spongy bone compared to compact bone. This makes them more flexible and less brittle than adult bones.

• Statement 3: "Chances of bone deformities and infection are more in adults than in children"

  This statement is incorrect. Children's bones are still developing and growing, making them more susceptible to certain types of deformities (e.g., issues related to growth plates) and infections like osteomyelitis. While adults can also experience bone deformities and infections, the developing nature of a child's skeleton often presents a higher risk profile for specific conditions. Therefore, the claim that risks are higher in adults is false.

• Statement 4: "The blood flow in the bones of children is more than that of adults"

  This statement is generally considered correct. Growing bones require a robust blood supply to support cell activity, nutrient delivery, and waste removal. The metabolic activity and growth processes in children's bones typically lead to a higher rate of blood flow compared to the relatively stable bones of adults.

Conclusion on the Incorrect Sentence

Based on the analysis, the sentence that incorrectly describes the differences between children's and adults' bones is: "Chances of bone deformities and infection are more in adults than in children". This statement wrongly suggests adults are more prone to these issues than children, which contradicts general biological understanding.