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sec 2 – ch 2: Transport in living organisms

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Lecture 1

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EKB-Lecture 1

Private: sec 2 – ch 2: Transport in living organisms Lecture 1 Guide answer of the homework-Lecture 1 EKB-Lecture 1

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Question 1 of 13

1. Question
- Which substance is the xylem primarily responsible for transporting?
- Carbon dioxide
- Glucose
- Sucrose
- Oxygen
- Water
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Question 2 of 13

2. Question
- In the stem of a plant, the pericycle, which is found around the vascular bundle, is made up of …………… cells.
- Parenchyma
- Collenchyma
- Companion
- Chlorenchyma
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Question 3 of 13

3. Question
- Which two tissues, involved in transport, make up the vascular bundle in plant stems?
- Phloem and cortex
- Xylem and pith
- Xylem and phloem
- Parenchyma and epidermis
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Question 4 of 13

4. Question
- Which of the following is not a function of a transport system in a plant stem?
- To provide leaves with the reactants they need for photosynthesis
- To transport sugars around the plant to cells that require sugars for cellular respiration
- To transport essential nutrients and minerals from the roots to the rest of the plant
- To transport dead and damaged cells to specialized immune structures that destroy them
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Question 5 of 13

5. Question
- Which substance is the phloem primarily responsible for transporting?
- Carbon dioxide
- Sugars
- Oxygen
- Water
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Question 6 of 13

6. Question
- In which of the following is a single layer of meristematic cells found?
- The cortex
- The leaf midrib
- Mesophyll tissue
- The vascular bundle
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Question 7 of 13

7. Question
- In the leaves and non-woody stems of plants, the is the outer layer that is made up of barrel-shaped parenchyma cells and covered by a cuticle.
- Cortex
- Epidermis
- Mesophyll tissue
- Vascular tissue
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Question 8 of 13

8. Question
- Photosynthesis products are transported through
- sieve tubes
- the xylem vessel
- tracheids
- the pericycle
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Question 9 of 13

9. Question
- In plants, which of the following functions and processes is lignin substance mainly involved in?
- Photosynthesis
- Transporting sugars to plants parts
- Pigmentation
- Structural Support
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Question 10 of 13

10. Question
- In a typical plant stem, the main tissues that act as storage cells for the plant are …….
- the pith only
- the pith and the starch sheath
- the starch sheath only
- None of the answers are correct.
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Question 11 of 13

11. Question
- After the photosynthesis process, the transport of phloem sap would be inhibited in the absence of ……
- companion cells
- cambiums
- xylem vessels
- tracheids
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Question 12 of 13

12. Question
- What is the function of medullary rays within the stem?
- They connect the xylem with the phloem
- They connect the cortex with the pith.
- They connect the phloem with the cambium.
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Question 13 of 13

13. Question
- Which of the following is not transported through xylem tissue?
- Sodium ions
- Water
- Calcium ions
- Starch
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