Bio 35I Plant Structure Questions
1. What are the differences between a dicotyledonous and a monocotyledonous plant?
2. What are the components of xylem? Phloem?
3. Name and describe the three structural components of roots.
4. Name and describe the four components of stems.
5. What are the functions of the leaf?
6.
List the three types of plant adaptations. Identify the environment where you would
expect to find plants with these adaptations.
Biology 35I: Transport in Plants
1. Complete the table below comparing Xylem to Phloem (6 marks)
Feature
Name of conducting cells
Xylem
Phloem
Direction in which substances
are transported
ONE possible mechanism by
which materials are transported
a. Name 2 differences between Xylem and Phloem in regards to the transport of sap.
b. What are the similarities of sap transport between Xylem and Phloem?
2. The grid below shows some factors involved in the flow of water through a
plant:
a) Use the letters from the boxes above to answer the following question:
Which two factors contribute to the movement of water molecules as a
continuous columns within xylem vessels? (1 mark)
Letters ________ and ________
b) Describe how changes in factor A can affect rate of transpiration (2
marks)
c) Stomata open as conditions change from dark to light. Why is this
important to plants? (2 marks)
d) State one benefit of transpiration in plants. (1 mark)
3. This diagram shows the transverse section of a leaf. The plant from
which it was taken was growing in normal conditions in an environment
where water was readily available.
a) Describe and explain how the oxygen concentration would vary at point
X over a 24 hour period
PLANT STRUCTURE
Across
1. contains large intercellular spaces
4. Cells arranged in rows-maximize trapping of light
8. Conducts the products of photosynthesis from the leaves
9. Large ground cells with numerous intercellular spaces and has food storage in stem
10. Meristem found between the xylem and phloem of vascular bundles
Down
2. Tissue includes cortex and pith and forms mesophyll
3. Large surface area for photosynthesis
4. Sieve ________ have openings leading from one cell to the next
5. Helps to control water loss and gas exchange
6. Dead but forms wood in trees
7. Functions include secretion, support and the storage of water and food