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- 1. A) Describe the three steps (Reception, Transduction, Response) of de-etiolation (greening response) signal transduction in plants. B) Describe a signal transduction (give the stimulus and response) that may occur in humans.You decide to plant a garden with a beautiful black walnut tree at one end and a majestic white oak at the other end. You are quite disappointed, however, when none of the seeds you plant around the walnut tree grow. What might explain this observation? a. The walnut tree filters out too much light, so the seeds fail to germinate. b. The roots of the walnut tree deplete all of the nutrients from the soil, so the new seedlings starve. c. The walnut tree produces chemical toxins that prevent seed germination.The independent variable in this experiment is A. the amount of light the plants receive. B. the amount of chlorophyll in the plant leaves.
- To which of the two lighting conditions would you expose seedlings if you wanted to maximize the rate of photosynthesis in the plants as well as minimizing your costs for electricity to light the plants in the greenhouse? A. Low light only. B. Moderate light only. C. Low light for the first 12 hours and then moderate light afterwards. D. Moderate light for the first 12 hours and then low light afterwards.Leo is testing different types of greenhouse material to determine which type is most effective for growing strawberry bushes. He purchases two different brands of tarps from a local store. Leo applies brand A to an area of the yard that receives full sunlight and brand B to another area of the yard that is in partial shade. He waters both areas daily. At the end of the study, Leo concludes brand A is more effective in growing strawberry bushes. Is Leo's conclusion valid? Explain why or why not.Light compensation zone refers to: A) where light is available in plenty B) where light is maximum C) beyond which light does not penetrate D) where all light is used
- Rafflesia plants do not provide food for insects that are attracted to their flowers. Why do the insects most likely visit rafflesia flowers? A The insects are looking for a place to live on the flowers. B The insects are attracted to the movement of the flowers. C The insects are following other insects that eat the flowers. D The insects are attracted to the rotting meat smell from the flowers.Jack and Jill are curious about the factors that affect plant growth. They perform several experiments using pea plants. (a) Identify one variable (other than water and sunlight) that could be tested. (b) Write a hypothesis using this variable. (c) Design an experiment to test this variable.pine trees that are too tall or too short do not do so well a pine trees that are average height. the short trees do not get as much light as tall or average treees. the tall trees are more likely to break off in a storm. How is this an example of stabilizing selectin?
- You have observed that fruit juice in bottles bought from the market are clearer as compared to those made at home. Give reason.Plants of the genus Fuchsia produce deep pink to red flowers thatdangle from plants, produce nectar in floral tubes, and have no scent.Based on these features, which animal is most likely to be a coevolvedpollinator of these plants?a. bee b. bat c. hummingbird d. butterfly e. mothMany cultures and religions have customs which deal with the way they use the land. For example, in Judaism, it is required that a field be left fallow (unplanted) every seventh year. What is one beneficial effect of customs like this? A) They prevent the land from being overused. B) They cause less competition among farmers. C) They make the land more valuable to farmers. D) They force people to farm more recklessly at other times. (Not Graded)