Practise MYP Biology questions on 4.5 Transpiration and Translocation and review the explanations to check your understanding.
Use these questions for topic practice and to find ideas you want to revisit in your notes or lessons.
Which statement correctly compares the direction of transport in xylem and phloem?
While the xylem primarily transports water and minerals, which substances are specifically moved during the process of translocation?
What is the physiological consequence of sucrose being removed from the phloem at a sink?
![ A cross-section of a leaf showing the upper epidermis, palisade mesophyll, spongy mesophyll with air spaces, and a lower epidermis with a stoma. ] Inside a leaf, water evaporates from the surfaces of which cells into the air spaces before diffusing out?
Based on the 'wet towel' analogy provided in the text, which environmental condition would lead to the slowest rate of transpiration?
Both tissues provide one-way transport from roots to leaves
Xylem is two-way; phloem is one-way (roots to leaves)
Xylem is one-way (roots to leaves); phloem is two-way
Both tissues provide two-way transport depending on the season
Water and carbon dioxide
Glucose and oxygen
Starch and minerals
Sucrose and organic molecules
The death of the phloem cells at the sink
An increase in pressure at the sink
The evaporation of water from the sink
A decrease in pressure at the sink
Mesophyll cells
Epidermal cells
Xylem vessels
Guard cells
Low humidity and high temperature
High temperature and high wind
Bright light and low humidity
High humidity and no wind
