Plant Cell Differentiation

Which of the following statements are FALSE about zygotes? Check all that apply.

The process of [blank_start]differentiation[blank_end] is said to occur in a cell when some [blank_start]genes[blank_end] become more expressed and other become less expressed. The overall structure of the cell may [blank_start]change[blank_end] and the cell becomes [blank_start]specialised[blank_end] to fulfil a certain role [blank_start]more efficiently[blank_end]. A group of such cells is called [blank_start]a tissue[blank_end].

Label this cross-sectional diagram of a plant leaf.

Which of the following has a large vacuole that serves to push chloroplasts to the cell's periphery to increase exposure to carbon dioxide?

The purpose of guard cells is to open and close [blank_start]stomata[blank_end] on the underside of the [blank_start]leaf[blank_end], which they do by changing [blank_start]shape[blank_end] according to the water [blank_start]potential[blank_end] in the cell. While they do not carry out [blank_start]photosynthesis[blank_end], these cells do have chloroplasts that they use to generate [blank_start]ATP[blank_end] from [blank_start]light[blank_end] energy.

Which of the following are TRUE regarding the specialisation of root hair cells?

In plants, stem cells are found in [blank_start]meristematic[blank_end] [blank_start]tissue[blank_end].

The xylem vessel constitutes part of the vascular [blank_start]bundle[blank_end] and is formed of [blank_start]dead cell remnants[blank_end] joined end-to-end. The cell [blank_start]walls[blank_end] are fortified with [blank_start]lignin[blank_end] to make the xylem [blank_start]waterproof[blank_end] and [blank_start]strong[blank_end]. The cell walls at the ends of the cells [blank_start]break down[blank_end], giving rise to a long, hollow tube.

Label this phloem.

One of the most important roles of a companion cell is to...

A group of tissues that work together to fulfil a [blank_start]common[blank_end] [blank_start]function[blank_end] is called an [blank_start]organ[blank_end].