Choose the incorrect statement from the following sentences. i. Chlorenchyma is specialized parenchyma that has chlorophyll pigment. ii. Apical meristem is responsible for growth of plants at root and shoot tips. iii. Parenchyma has thick cell wall and prominent nuclei. iv. Sclerenchyma gives stiffness and hardness to plants.

Which of the follow describes a disadvantage secondary sources have compared to primary sources?

Ivan is looking at a cross section of a stem taken from a vascular plant. he sees two different types of vascular tissue: the xylem, which is closer to the center of the stem, and the phloem, located around the xylem, closer to the outside of the stem. how do these two structures work together in a living plant?

Do the following statements describe actin, myosin, both of the proteins or neither of the proteins? (a) contains a binding site for calcium (b) found in the i band (c) exists in a globular (g) form and a filamentous (f) form (d) contains a binding site for atp (e) is a component of the thin filament (f) is a component of the thick filament