Question
Please answer all the questions
U-bend piled with 9, Halves of a UU-end pipe are separated by a 14 Caffeine is an example of a plants semi-permeable membrane and filled with pure water. Sugar is added to the left side to defense create a water potential of -O.3, A plunger is used to add pressure and generate a water potential of O.5 on the left side as well To w hich side will the water in the U-bend move? A. Left A. Physical B. Primar y C. Chemical D. Secondary 15 Plants recognize the from pathogens before initiating a response A. avR B. Vir C. UAS D. R gene B. Right C. No net movement D. The water cannot be moved 10. Guard cells are inflated/deflated by regulating ACell size 16. is an essential nutrient as it is a component of chlorophyll A. Na B. Mg C. Mn B. Cell number C. Air pressure D. Turgor pressure II. If auxin is provided/injected to the left side D. C of a shoot, what direction will the shoot grow in? A. Left 17. Plants cannot utilize nitrogen in the 17. Plants cannot atmosphere. They rely on associations with B. Right for nitrogen compounds C. Straight up A. Bees B. Paramecium C. Parasites D. The shoot will die 12. Phytochromes are activated by D. Fungi and bacteria A. Blue light 18. Complete flowers have all whorls. B. Green light C. Yellow light A. 1 B. 2 C. 3 D. 4 D. Red light 13. CONSTANS is an example of a because it is activated by blue light. 19. layer usually the nutrients plants need from soil. A. Phytochrome B. Cloudochrome C. Cryptochrome A. Subsoil B. Bedrock D. Parachrome C. Topsoil D. Rock
Explanation / Answer
9) The movement of solvent molecules across a selectively permeable membrane from the region of lower concentration to a region of higher concentration is called as osmosis. Here, sugar is added to the left side of the pipe and a water potential of -0.3 is created. This causes movement of water into the left side of the pipe. But, a pressure of 0.5 is generated using plunger on the left side of the pipe as well. This counteracts the earlier osmotic pressure and therefore water molecules move from left side of the pipe to the right side. So, the answer for this question is option B (right).