Biological Science (7th Edition)
7th Edition
ISBN: 9780134678320
Author: Scott Freeman, Kim Quillin, Lizabeth Allison, Michael Black, Greg Podgorski, Emily Taylor, Jeff Carmichael
Publisher: PEARSON
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The summer is not optimal for grape growing and you're searching in your memory for something regarding plant hormones.
Explain 2 ways you could utilize plant hormones (choose from auxin, ethylene, cytokinin, gibberellin, abscisic acid, salicylic acid, jasonic acid) to compensate for a problem during growing. For each way:
which is true regarding how auxin impacts bending of plants?
auxin increases reversible bending (elasticity)
auxin causes the increase of proteins that embed in between cellulose in the cell wall
auxin travels to the sunny side of the stem to change growth
auxin causes an increase in cell division that results in blending
2. Select all that are true regarding plant responses
trophic responses are reversible, repeatable movements independent of the position of the stimulus
venus fly trap responses are an example of a nastic movement
phytochrome only enters the nucleus to change gene expression when in the active form (Pfr)
shade or far red light converts the inactive phytochrome (Pr) to the active form (Pfr)
Protects the plant and
prevents it from drying
out by means of a waxy
Select match
cuticle.
Provides support and
useful for food storage.
->
Select match
Thick walls allow them
->
Select match
to support the plant and
also allow it to be
flexible.
The brain and spinal
cord, which contains
special cells called
Select match
neurones.
Skeletal or striated
Select match
tissue connected to the
skeleton to help with
movement.
Tissue found on the
->
Select match
surface of the skin.
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Similar questions
- Which of the following does auxin cause in the tropism with which it is involved? increased protein synthesis increased plasma membrane permeability hardening of cell walls cell elongation rapid cell divisionarrow_forwardOn a hot, dry day a plant closes its stomata thereby conserving water. Which plant hormone is responsible for the closing of the stomata? ethylene abscisic acid cytokinin auxin gibberellinarrow_forwardA house plant that has been placed in the window will grow toward the source of light. Which option is the best possible reason? auxin becomes less concentrated on the illuminated side of the plant auxin becomes more concentrated in the roots of the plant auxin is produced only when the sun shines auxin inhibits the growth of cells on the shady side, so the cells on the sunny side grow faster auxin becomes more concentrated on the illuminated side of the plantarrow_forward
- Plant cells communicate in a variety of ways to elicit cellular responses. In the figure below the plant is responding the presence of light with the release of auxin. Auxin was first discovered for its ability to promote growth in plants. It is a plant hormone that inhibits the lengthening and stimulate the formation of lateral roots and root hairs. (b) Explain the role that auxin has in eliciting the plant’s response.arrow_forwardMany different treatments were possible in the phototropism experiment. Based on your understanding of phototropism, provide predictions about the direction of plant growth for the following two scenarios, and explain your reasoning. 1. The tip of the coleoptile is removed and lanolin with auxin is applied to the dark side of the stem. 2. The tip of the coleoptile is removed and lanolin with auxin is applied to the light side of the stem.arrow_forwardHow does the signal transduction pathway for auxin that leads to cell wall loosening. Include the receptors ABP and ARF. How does the auxin pathway possibly differ from the 'generic' signal transduction pathway? Consider expressing the cellular components that differ in the absence and presence of auxin.arrow_forward
- Explain the concept of phototropism and how auxin is involve in this process. Give some examples.arrow_forwardPlant cells communicate in a variety of ways to elicit cellular responses. In the figure below the plant is responding the presence of light with the release of auxin. Auxin was first discovered for its ability to promote growth in plants. It is a plant hormone that inhibits the lengthening and stimulate the formation of lateral roots and root hairs. a) Describe the plant’s response to the presence of light. (refer to picture)arrow_forwardDescribe how auxin causes a plant to bend towardlight.arrow_forward
- Positive thigmotropism is a response in plants in which they move and grow toward an object the plant comes into physical contact with , usually curling around the object. This response of the shoot system benefits the plant by allowing the plant to -arrow_forwardWhich of the following hormones are NOT matched with the proper function? abscisic acid- promotes leaf abscission cytokinins-stimulates cell division ethylene- promotes fruit ripening gibberellic acid- promotes stem elongation auxin-promotes increases in cell sizearrow_forwardIllumination with red light but not far-red light will generate the Pfr form of phytochrome True Falsearrow_forward
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