become modified in a variety of ways over evolutionary time. describe any two actual modified plant structures, including their function and whether they are modified roots, stems or leaves

Why the transfer to wild plants from crops of genes that provide pesticide and insecticide resistance may have evolutionary consequences? Explain.

Mang Noel and Efren are very close friends. They live in a province which main source of income relies on farming. They both own 1 hectare of rice field. Before the implementation of ECQ, Mang Noel's son, Chris, went home for a while. One Saturday morning, Chris with his father went to the field. While roaming around, his father observed something unusual in the rice plant. The plants exhibit yellowing that starts from the leaf tip and extends down to the lower leaf portion. Going back home, they passed by to the field of Mang Efren. Mang Noel mentioned to him the unusual thing in his field. Mang Efren advised him not to worry about and to apply fertilizer. With that, Chris' father thought that it was just an ordinary case and believed that everything will go back to normal after nitrogen application. However, Chris was not convinced so he decided to consult a plant pathologist and eventually confirmed his intuition that the disease is Rice Tungro. Based on Plant Pathology, how should…

Topic: The process of reproduction, development, and nutrition of plant and animal

1. What is a “rootstock”, and why is it important to the lives of the plants that produce them? What is the practical importance of rootstock to agriculture? 2. Define the term “phenotypic plasticity” and explain how it is important to plants. 3. What makes a leaf a “leaf”? What are the morpho-anatomical and developmental characters that distinguish the leaf from the stem and the root of the plant?