BIOLOGY(LL)-W/ACCESS CODE >CUSTOM<
12th Edition
ISBN: 9781264058167
Author: Raven
Publisher: MCG CUSTOM
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Textbook Question
Chapter 39, Problem 1U
Which of the following is stimulated by blue light?
a. Seed germination
b. Detection of plant spacing
c. Phototropism
d. Shoot elongation
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Which of the following is True?a. Ethylene stimulates abscission layers to form.b. Abscisic acid causes abscission layers to form.c. Ethylene is sometimes sprayed on flowers to keep them fresh.d. Abscisic acid stimulates seed germination.
Which of the following is true regarding germination?
a.
Imbibition of water is the first step of germination
b.
All are true regarding germination
c.
Shoots emerge first, then roots
d.
The seed coat stays intact during germination
e.
Freezing and thawing can help start germination
Four of the following are steps occur in
the earliest stages of seed germination.
Choose the fifth and last step:
Select one:
O a. Intake of water
b. Activation of the aleurone layer
O c. Cell division
d. Increase in cellular respiration
e. Mobilization of food reserves for
cell division
Chapter 39 Solutions
BIOLOGY(LL)-W/ACCESS CODE >CUSTOM<
Ch. 39.1 - Compare the pigments phytochrome and chlorophyll.Ch. 39.1 - List growth responses influenced by phytochrome.Ch. 39.1 - Prob. 3LOCh. 39.2 - Prob. 1LOCh. 39.2 - Prob. 2LOCh. 39.3 - Prob. 1LOCh. 39.3 - Prob. 2LOCh. 39.3 - Prob. 3LOCh. 39.4 - Prob. 1LOCh. 39.4 - Prob. 2LO
Ch. 39.4 - Identify the types of biological molecules that...Ch. 39.5 - Discuss properties of hormones.Ch. 39.5 - Prob. 2LOCh. 39.5 - Prob. 3LOCh. 39 - Prob. 1DACh. 39 - Prob. 1IQCh. 39 - Prob. 2IQCh. 39 - Propose a mechanism to explain how seedlings could...Ch. 39 - Which of the following is stimulated by blue...Ch. 39 - Prob. 2UCh. 39 - Prob. 3UCh. 39 - Prob. 4UCh. 39 - Which of the following does NOT happen as a seed...Ch. 39 - Dwarf mutants can sometimes be induced to grow...Ch. 39 - Prob. 1ACh. 39 - If you were to plant a de-etiolated (det2) mutant...Ch. 39 - Prob. 3ACh. 39 - Which of the following defects would prevent...Ch. 39 - You have come up with a brilliant idea to stretch...Ch. 39 - You have identified a mutant Arabtdopsis plant...Ch. 39 - Which of the following might not be observed in a...Ch. 39 - Prob. 1SCh. 39 - Prob. 2SCh. 39 - The current model for gravitropism suggests that...Ch. 39 - Prob. 4S
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- Which of the following statements is false? a. Auxin and gibberellin promote stem elongation b. Cytokinin promotes cell division in shoot tips c. Abscisic acid promotes water loss and dormancy d. Ethylene promotes fruit ripening and abscission.arrow_forwardChoose the one answer that fits best. Which of the following statements regarding seed germination is NOT correct? O a. The first structure to emerge is the root O b. The root grows away from the light or down O c. Seeds can always germinate no matter what temperature and light conditions are d. There is no photosynthesis until green leaves emerge e. Enzymes inside the embryo break down nutrients during germinationarrow_forwardPresence of all of the following factors promotes dormancy of seeds, except a.Phenolics b.Impermeable seed coat c.Immature embryo d.Gibberellinsarrow_forward
- Which of the following is NOT regulated by Gibberellins? seed germination a. b. fruit growth gravitropism Oc. stem elongation d.arrow_forwardWhich of the following statements is false?a. Auxin and gibberellin promote stem elongation.b. Cytokinin triggers growth of lateral buds.c. Abscisic acid promotes water loss and dormancy.d. Ethylene promotes fruit ripening and abscissionarrow_forwardWhich of the following is considered essential for germination? Select one: a. Abscisin b. Cytokinin c. Gibberellins d. Auxinarrow_forward
- Ethylene respond synergistically with another plant hormone ‘X’ for promoting shedding of leaves, flowers and fruits. The hormone ‘X’ can be used in agriculture for a.Inducing fruit ripening b.Increasing internode elongation c.Reducing requirement of irrigation d.Promoting floweringarrow_forwardA long day plant is given a long night, and is interrupted by a light pulse in the middle of the night. Which quality of the light pulse will most likely prevent flowering? Select one: a. UV light b. green light c. red light d. far-red lightarrow_forwardVegetative propagation in liverworts is possible because of propagules known as gemmae. Select one: True False Where would you most likely find the megasporangium of an angiosperm? a. Within an ovule contained within an ovary of a flower b. In the style of a flower c. Enclosed in the stigma of a flower d. Packed into pollen sacs within the anthers found on a stamen Which of the following plant structures is NOT matched correctly to its function? a. Stomata allow gas transfer b. Tracheids allow the movement of water and minerals c. Cuticle prevents desiccation d. Plasmodesmata - form a supportive meshwork which acts as a cellular exoskeletonarrow_forward
- If you exposed seeds to a series of red light versus far-red light treatments, which of the following exposure treatments would result in seed germination? a. Red; far-red b. Far-red; red c. Red; far-red; red; far-red; red; far-red; red; far-red d. Both a and c are correct.arrow_forwardPollen grains in plants are produced in: A. roots B. leaves C. flower D. stemarrow_forwardFar-red light will _________stem elongation and _______seed dormancy. Select one: a. promote, suppress b. suppress, promote c. suppress, suppress d. promote, promotearrow_forward
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