Some plants exhibit a behavior called thigmotropism that causes the plant to grow or move in response to touch or contact. Climb
ing vines use this behavior to grow tendrils that curl around other plants for support. What is the MOST likely reason a climbing vine would evolve this ability? a. to help ensure seeds are widely dispersed c. to grow roots needed to absorb water and nutrients b. to absorb water and food from the host plants d. to grow high off the ground in order to maximize sunlight exposure
The right answer is d.to grow high off the ground in order to maximize sunlight exposure
Explanation:
Thigmotropism is a directional grow in response to a touch stimulus. As a result the plant which exhibit thigmotropism presents pronounced vertical grow and reduced lateral grow. Climbing vines grows around other plant so, the support plant intercept most of the incident radiation. As climbing vines needs sunligth to photosynthesize they grow in vertical direction. So, the principal cause for this evolvement is to maximize sunlight exposure.
Sinh vật nhân sơ chỉ có một RNA Polymerase, trong khi sinh vật nhân chuẩn có ba (RNA Polymerase I, phiên mã rRNA; II, phiên mã mRNA; và III, phiên mã tRNA).
