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TEST BANK FOR CAMPBELL BIOLOGY 12TH EDITION || CHAPTERS 39||FULL COMPLETE||LATEST 2024
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TEST BANK FOR CAMPBELL BIOLOGY 12TH EDITION || CHAPTERS 39||FULL COMPLETE||LATEST 2024
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ESTUDYTEST BANK FOR CAMPBELL BIOLOGY 12TH EDITION
|| CHAPTERS 39||FULL COMPLETE||LATEST
### 1) Which of the following may NOT function in signal transduction in plants?
A) Calcium ions
B) Nonrandom mutations
C) Receptor proteins
D) Phytochrome
E) Second messengers
**✔ Answer: B**
---
### 2) In systemic acquired resistance, salicylic acid likely activates defenses throughout the plant
before what happens?
A) Infection spreads
B) Nutrients are absorbed
C) Photosynthesis begins
D) Growth occurs
**✔ Answer: A**
---
,ESTUDY
### 3) How may a plant respond to severe heat stress?
A) By producing heat-shock proteins
B) By losing leaves
C) By increasing water intake
D) By changing color
**✔ Answer: A**
---
### 4) If a scientist finds an Arabidopsis mutant that does not store starch in plastids but shows normal
gravitropic bending, what should be reevaluated?
A) The role of light
B) The role of statoliths in gravitropism
C) The importance of roots
D) The significance of leaves
**✔ Answer: B**
---
### 5) If a long-day plant has a critical night length of 9 hours, which 24-hour cycle would prevent
flowering?
A) 8 hours of light, 16 hours of dark
B) 10 hours of light, 14 hours of dark
C) 9 hours of light, 15 hours of dark
, ESTUDY
D) 6 hours of light, 18 hours of dark
**✔ Answer: D**
---
### 6) The chemical signal for flowering could be released earlier than normal in a long-day plant
exposed to flashes of what?
A) Blue light
B) Red light during the night
C) Green light
D) Yellow light
**✔ Answer: B**
---
### 7) Which of the following is NOT a typical part of a signal transduction pathway?
A) Production of more signal
B) Production of second messengers like cGMP
C) Expression of specific proteins
D) Activation of protein kinases
E) Phosphorylation of transcription factors
**✔ Answer: A**
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