Aplant that responds to touch is showing which of the following? a- thigmotropism b- gravitropism c- hydrotropism d- phototropism need !

The correct answer is option A, that is, thigmotropism.  

Thigmotropism refers to a directional growth movement that takes place as a mechanosensory reaction to a touch stimulus. Thigmotropism is usually found in tendrils and twining plants, though plant biologists have also discovered thigmotropic responses in fungi and flowering plants.  

This behavior takes place due to unilateral growth inhibition, that is, the rate of growth on the side of the stem that is being touched is gradual in comparison to the side opposite to touch.  

hi my name is ashlynn and im 15

these macromolecules could either be amino acids, proteins or nucleic acids. they are responsible for the chemical changes and reactions that affects largely the cell and its composition. take for instance the cytoplasm of the cell where these organelles are settled. these simple organelles are composed of macromolecules which ignites and catalyses different functions that enables cells, in macro-perspective in motion and metabolism. in intestines for example, metabolism happens and breaking down parts of a food to simpler compounds that are used and these nutrients delivered throughout the body and again broken down by into smaller components.