MCQ-3: Transport in Plants

Which substance is moved by translocation in a flowering plant?

The diagram shows the stem of a plant. A strip of the outer tissue including the phloem has been removed.

How is transport in the plant affected?

A plant shoot is placed in a solution of a dye.
The dye moves up the stem.
Under which conditions will the dye move slowest?

What is a description of transpiration?

What is the function of translocation?

What is not a use of water by plants?

The photomicrograph shows a cross-section through a buttercup root.

What is the function of the tissue labelled Z?

Roots and leaves both act as a source and a sink for sucrose and amino acids at different times during the year.
At which point in the year are the roots most active as a source?

The diagram shows a plant cell.

What type of plant cell is this?

The diagram shows a section through the stem of a dicotyledonous plant.
Which part transports water and mineral ions?

In plants, what is transported by translocation?

The diagram shows an experiment to investigate transpiration.

Plant 1 is not covered. Plant 2 and its pot are covered by a transparent plastic bag.
The mass of each plant and its pot is measured. The masses are measured again after two hours.
What is the result?

Which description of translocation is correct?

The diagram shows a cross-section through a plant root.

What is found at Q and R?

Rabbits can damage trees by eating the bark and phloem.

If the damage goes all the way around the stem, what will happen in the tree?