Parts of a plant are listed. 1 mesophyll cells 2 root cortex cells 3 root hair cells 4 xylem vessels What is the pathway taken by water in the plant?

\(1 \rightarrow 4 \rightarrow 2 \rightarrow 3\)

\(1 \rightarrow 2 \rightarrow 3 \rightarrow 4\)

\(3 \rightarrow 1 \rightarrow 4 \rightarrow 2\)

\(3 \rightarrow 2 \rightarrow 4 \rightarrow 1\)

Biology

IGCSE&ALevel

CAIE

Exam No：0610_w23_qp_21 Year：2023 Question No：17

Answer:

8.1.1 State the functions of xylem and phloem

8.1.2 Identify the position of xylem and phloem as seen in sections of roots, stems and leaves, limited to non-woody dicotyledonous plants

8.2.1 Identify root hair cells, as seen under the light microscope, and state their functions

8.2.2 State the pathway taken by water through root, stem and leaf as root hair cell, root cortex cells, xylem and mesophyll cells

8.2.3 Investigate, using a suitable stain, the pathway of water through the above-ground parts of a plant

8.2.4 Explain that the large surface area of root hairs increases the rate of the absorption of water by osmosis and ions by active transport