Question

20.Assertion: The four chambered heart does not mix oxygenated and deoxygenated blood.
Reason: Four chambered heart is found in mammals with advanced body functions.​

Answer 1

Answer:

In four chambered heart, left half is completely separated from right half by septa. This prevents oxygenated and deoxygenated blood from mixing. This allows a highly efficient supply of oxygenated blood to all parts of the body. This is useful in animals that have high energy needs, such as birds and mammals.

please mark as brienlist answer

Answer 2

Assertion is correct but reason is false is the correct answer

Explanation:

The four chambered heart does not mix oxygenated and deoxygenated blood:

• The septa entirely separate the left and right chambers of a four-chambered heart. This avoids the mixing of oxygenated and deoxygenated blood.
• This ensures that oxygenated blood reaches all parts of the body quickly and efficiently. Birds and mammals, for example, have high energy requirements, therefore this is beneficial.

Four chambered heart is found in mammals with advanced body functions:

• Herbivores, carnivores, and omnivores are all types of mammals. They have four different types of teeth, allowing them to devour a wide variety of things.
• The heart and lungs have characteristics that keep the cells of animals well supplied with oxygen and nutrients. Mammalian brains are rather large, and they have a high level of intelligence.