NEET BIOLOGY

Detailed explanation-1: -Thigmotropism (the ability to sense and respond to changes in surface contours) certainly enables many obligate plant pathogenic fungi to locate epidermal entry sites and initiate invasive growth. Much of our understanding of this process comes from studies on the rust fungus Uromyces appendiculatus[7, 8].

Detailed explanation-2: -Folding up of leaves of sensitive plant in response to touch is known as photonasty which is not a type of tropism. Opening up of the leaves of a daisy flower in response to light is also not an example of tropism.

Detailed explanation-3: -While there are several forms of tropism, we’ll just focus on three key types: phototropism, geotropism and thigmatropism.