Which of the two diagrams 1 or 2 represents a transverse section of a young root?
(ii) State two features of the diagram that indicate it is a root - Leaving Cert Biology - Question 15 - 2005
Question 15
Which of the two diagrams 1 or 2 represents a transverse section of a young root?
(ii) State two features of the diagram that indicate it is a root.
(iii) The letter... show full transcript
Worked Solution & Example Answer:Which of the two diagrams 1 or 2 represents a transverse section of a young root?
(ii) State two features of the diagram that indicate it is a root - Leaving Cert Biology - Question 15 - 2005
Step 1
Which of the two diagrams 1 or 2 represents a transverse section of a young root?
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Answer
Diagram 2 represents a transverse section of a young root. This can be distinguished by its structure which includes a central vascular bundle.
Step 2
State two features of the diagram that indicate it is a root.
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Answer
The presence of a single or central vascular bundle, typically identified as xylem and phloem.
The presence of root hairs and possibly an endodermis layer.
Step 3
The letters A, B, C in the diagram represent three different tissue types. State which tissue type in the following list is represented by each letter; ground tissue, vascular tissue, dermal tissue.
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Answer
A = ground tissue
B = vascular tissue
C = dermal tissue
Step 4
Name two vascular tissues and give one way in which they differ.
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Answer
The two vascular tissues are xylem and phloem.
Xylem is responsible for transporting water through lignified vessels or tracheids, which are typically dead at maturity. In contrast, phloem transports food via living cells such as sieve tubes and companion cells.
Step 5
State a function of ground tissue.
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Answer
Ground tissue serves multiple functions such as food storage, storage of waste, and performing photosynthesis. It also provides strength and support to the plant.
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