AP BIOLOGY

Detailed explanation-1: -Roots show positive geotropism.

Detailed explanation-2: -Complete Answer:-Stems of the plant show negative geotropism while the roots show positive geotropism. This implies that the roots grow downwards i.e. in the direction of the gravity and stems grow upward i.e. in the direction opposite to the gravity.

Detailed explanation-3: -Positive geotropism refers to the downward growth of plants, going with the force of gravity. Positive geotropism is seen in the roots of plants because the roots of plants grow downward with the force of gravity.

Detailed explanation-4: -Solution : Example of positive geotropism is downward growth of root.

Detailed explanation-5: -when a root grows in the direction of the force of gravity, this is known as a positive geotropism. Just like phototropism, gravitropism, or geotropism, is also caused by an unequal distribution of auxin.