Podcast
Questions and Answers
What is the primary function of the vascular rays in woody dicotyledonous stems?
What is the primary function of the vascular rays in woody dicotyledonous stems?
- To produce secondary xylem and phloem
- To support the vascular bundles
- To conduct nutrients and water laterally (correct)
- To store food reserves
What is the purpose of the cork cambium (phellogen) in many plants?
What is the purpose of the cork cambium (phellogen) in many plants?
- To produce secondary xylem and phloem
- To form the vascular bundles
- To exchange gases through the lenticels
- To reduce water loss and protect the stem against injury (correct)
How do the annual rings in woody dicotyledonous stems indicate the age of a tree?
How do the annual rings in woody dicotyledonous stems indicate the age of a tree?
- The number of rays indicates the age of the tree
- The number of lenticels indicates the age of the tree
- The thickness of the rings indicates the climate during the tree's lifetime
- Each annual ring represents one year's growth of the tree (correct)
What is the role of the vascular cambium in the secondary growth of stems?
What is the role of the vascular cambium in the secondary growth of stems?
What is the primary difference between the tissue patterns of herbaceous and woody dicotyledonous stems?
What is the primary difference between the tissue patterns of herbaceous and woody dicotyledonous stems?
What is the function of the lenticels in the cork layer of many plants?
What is the function of the lenticels in the cork layer of many plants?
What is the purpose of the bud scales and leaf primordia that protect the apical meristem?
What is the purpose of the bud scales and leaf primordia that protect the apical meristem?
Which of the three primary meristems gives rise to the epidermis?
Which of the three primary meristems gives rise to the epidermis?
What is the purpose of the leaf gaps and bud gaps in the cylinder of vascular tissue?
What is the purpose of the leaf gaps and bud gaps in the cylinder of vascular tissue?
What is the role of the procambium in the development of the stem?
What is the role of the procambium in the development of the stem?
What is the function of the apical meristem at the stem tip?
What is the function of the apical meristem at the stem tip?
What do tyloses in stems prevent?
What do tyloses in stems prevent?
Which type of wood lacks fibers or vessel elements?
Which type of wood lacks fibers or vessel elements?
What do laticifers in stems primarily secrete?
What do laticifers in stems primarily secrete?
Which type of cutting results in boards showing annual rings as irregular bands of light and dark streaks?
Which type of cutting results in boards showing annual rings as irregular bands of light and dark streaks?
What makes up about 60-75% of the dry part of wood?
What makes up about 60-75% of the dry part of wood?
Which part of the wood is composed of about 15-25% lignin?
Which part of the wood is composed of about 15-25% lignin?
What is the name given to the region of the stem between two nodes?
What is the name given to the region of the stem between two nodes?
What is the term used for the angle between the petiole and the stem?
What is the term used for the angle between the petiole and the stem?
Which of the following is NOT a leaf arrangement pattern on a twig?
Which of the following is NOT a leaf arrangement pattern on a twig?
What is the function of bud scales?
What is the function of bud scales?
What is the name given to the paired, often leaf-like appendages at the base of a leaf?
What is the name given to the paired, often leaf-like appendages at the base of a leaf?
What feature can be used to identify trees in winter?
What feature can be used to identify trees in winter?
What is the primary use of wood in the United States and Canada?
What is the primary use of wood in the United States and Canada?
What plant structures are characterized by swollen, fleshy, underground stems that store food?
What plant structures are characterized by swollen, fleshy, underground stems that store food?
Which of the following plant structures are composed almost entirely of stem tissue, with papery leaves?
Which of the following plant structures are composed almost entirely of stem tissue, with papery leaves?
What are the knots found on wood?
What are the knots found on wood?
Which of the following is a specialized stem that grows above ground and has long internodes?
Which of the following is a specialized stem that grows above ground and has long internodes?
What is the second most widespread use of wood after lumber?
What is the second most widespread use of wood after lumber?
What is the role of the apical meristem at the stem tip?
What is the role of the apical meristem at the stem tip?
What do leaf primordia develop into?
What do leaf primordia develop into?
What do traces in stems branch off from?
What do traces in stems branch off from?
What is the primary function of ground meristem in stems?
What is the primary function of ground meristem in stems?
What fills the gaps left by traces in the cylinder of vascular tissue?
What fills the gaps left by traces in the cylinder of vascular tissue?
What is the term for the area of the stem where leaves are attached?
What is the term for the area of the stem where leaves are attached?
What is the function of lenticels in the cork layer of many plants?
What is the function of lenticels in the cork layer of many plants?
What is the primary purpose of bud scales?
What is the primary purpose of bud scales?
What is the term used for the angle between the petiole and the stem?
What is the term used for the angle between the petiole and the stem?
What is the primary function of vascular rays in woody dicotyledonous stems?
What is the primary function of vascular rays in woody dicotyledonous stems?
How do the annual rings in woody dicotyledonous stems indicate the age of a tree?
How do the annual rings in woody dicotyledonous stems indicate the age of a tree?
What type of stem tissue patterns do conifers have?
What type of stem tissue patterns do conifers have?
What is the primary function of tyloses in woody stems?
What is the primary function of tyloses in woody stems?
Which of the following is a common resin-secreting tropical flowering plant found in some woody dicotyledonous stems?
Which of the following is a common resin-secreting tropical flowering plant found in some woody dicotyledonous stems?
In what type of cutting are annual rings shown as irregular bands of light and dark streaks?
In what type of cutting are annual rings shown as irregular bands of light and dark streaks?
What is the main component of the dry part of wood, making up about 60-75% of it?
What is the main component of the dry part of wood, making up about 60-75% of it?
What is the purpose of laticifers found mostly in phloem of young stems?
What is the purpose of laticifers found mostly in phloem of young stems?
What is the primary function of the vascular cambium in woody dicotyledonous stems?
What is the primary function of the vascular cambium in woody dicotyledonous stems?
Which tissue is responsible for the lateral conduction of nutrients and water in woody dicotyledonous stems?
Which tissue is responsible for the lateral conduction of nutrients and water in woody dicotyledonous stems?
How do the annual rings in the xylem of woody dicotyledonous stems indicate the age of a tree?
How do the annual rings in the xylem of woody dicotyledonous stems indicate the age of a tree?
What is the primary function of the cork cambium (phellogen) in many plants?
What is the primary function of the cork cambium (phellogen) in many plants?
What is the purpose of lenticels in the cork layer of many plants?
What is the purpose of lenticels in the cork layer of many plants?
In herbaceous dicotyledonous stems, where are the vascular bundles arranged?
In herbaceous dicotyledonous stems, where are the vascular bundles arranged?
What are knots in wood?
What are knots in wood?
What is the most widespread use of wood after lumber?
What is the most widespread use of wood after lumber?
Which of the following is a specialized stem that stores food?
Which of the following is a specialized stem that stores food?
What are the "eyes" of a potato?
What are the "eyes" of a potato?
What is the primary use of wood in developing countries?
What is the primary use of wood in developing countries?
What are cladophylls?
What are cladophylls?
