NEET BIOLOGY

Detailed explanation-1: -Bilateral Symmetry divides the organism’s body into identical halves of left and right through a vertical plane known as the sagittal plane or medial plane. Most animals ranging from platyhelminthes to higher chordates are bilaterally symmetrical.

Detailed explanation-2: -A condition in which the right and left sides of an item (e.g., a shape or an animal) are mirror images of one another. For example, since the right side of the human body generally mirrors the left side, humans are bilaterally symmetric.

Detailed explanation-3: -A sagittal plane divides the body into right and left portions. A midsagittal plane divides the body exactly in the middle, making two equal right and left halves. A frontal plane (also called a coronal plane) separates the front (ventral) from the back (dorsal).

Detailed explanation-4: -Animals with bilateral symmetry have one line that divides them into two mirror images. Look at a butterfly. If you drew a line exactly down the center of its body from its head to its tail, the two halves would be the same, but mirror images of each other.

Detailed explanation-5: -Examples of animals that possess bilateral symmetry are: flatworms, common worms ("ribbon worms"), clams, snails, octopuses, crustaceans, insects, spiders, brachiopods, sea stars, sea urchins, and vertebrates.