Answer:
The three major internal parts of a stem are the xylem, phloem, and cambium. The xylem and phloem, as mentioned before, are the major components of a plant's vascular system. The cambium is a meristematic tissue, which means that it is a site of cell division and active cell growth.
Explanation:
Answer:
A nuclear membrane is a double membrane that encloses the cell nucleus. It serves to separate the chromosomes from the rest of the cell. The nuclear membrane includes an array of small holes or pores that permit the passage of certain materials, such as nucleic acids and proteins, between the nucleus and cytoplasm.
Parasite: Parasites are different from predators because parasites only take resources from one host, whereas predators eat many prey. A good example of this is the trematode parasite Schistosoma mansoni. An adult schistosome parasite lives inside of just one human host
