Fig. 4.1 shows a summary of the cell cycle in a meristematic cell from the root tip. The two phases of this cell cycle are: - interphase, split into the $G_1$, $S$ and $G_2$ stages - cell division, split into stages $1$-$5$
In Fig. 4.1, stage $2$ is metaphase. The stages shown in Fig. 4.1 are listed below. Draw a circle around the stage in the cell cycle that is cytokinesis and describe what happens during this stage in the root tip meristematic cell.
The stages shown in Fig. 4.1 are listed below. Draw a circle around the stage in the cell cycle where the semi-conservative replication of DNA takes place and state what is meant by semi-conservative replication.
Meristematic cells perform a role similar to that of stem cells in animals. Suggest the role of a meristematic cell and explain the features that enable it to carry out this role.
Meristematic regions in the plant may sometimes be described as strong sinks. State what is meant by a sink.
Suggest the meaning of a strong sink.
Describe and explain the process by which sucrose is loaded into phloem sieve tubes.