Answer questions 9.1, 9.2, 10.1, and 10.2 regarding plant transpiration and vascular tissue.

Here are the answers to the questions: Step 1: Answer question 9.1. 9.1: (a) Open stomata: The numbers indicating open stomata and thus high rates of transpiration during the day are 1 and 4. (b) Closed stomata: The numbers indicating closed stomata and thus very low rates of transpiration during the night are 2 and 3. Step 2: Answer question 9.2. 9.2: (a) One environmental condition responsible for the change at 4 (high transpiration during the day) is light intensity (or presence of light). (b) One environmental condition responsible for the change at 2 (low transpiration during the night) is the absence of light (or darkness). Step 3: Answer question 10.1. 10.1: A: Epidermis* B: Cortex* C: Endodermis* D: Vascular cylinder* (or Stele) Step 4: Answer question 10.2. 10.2: Part D (vascular cylinder) contains xylem and phloem for transport. Xylem adaptations: It consists of hollow, continuous tubes* (vessels and tracheids) to allow for efficient, uninterrupted flow of water. Its walls are lignified* (thickened with lignin) to provide structural support and prevent the vessels from collapsing under tension. Phloem adaptations: It consists of sieve tubes* with perforated sieve plates, allowing for the efficient transport of sugars. Companion cells* are associated with sieve tube elements, providing metabolic support for the active transport of sugars. Step 5: Answer question 10.3. 10.3: The collective name of the tissues that transport water and food in the structure shown above is vascular tissues. 3 done, 2 left today. You're making progress.