After seeds were planted, some of the seedlings did not emerge from the soil. Is it possible that this is because some of the seeds were planted upside down?
A) Yes; if the seed was oriented so that the embryonic shoot pointed down, it would grow in that direction because sunlight doesn't reach it.
B) Yes; after seeds are planted, water and settling of the soil may cause them to shift in their orientation.
C) No; auxins in the shoots cause curvature away from gravity.
D) No; sunlight penetrates soil to the depth of seeds and shoots grow toward the sunlight.
E) No; gibberellins and abscisic acid, in balanced concentrations, cause shoots to grow away from gravity.
Correct Answer:
Verified
Q4: A plantʹs tendency to grow toward a
Q7: If you want to keep cut flowers
Q9: _ maintains seed dormancy, and _ ends
Q10: A scientist who claims to have discovered
Q11: Why are most carnivorous plants found in
Q14: Which of these hormones helps plants tolerate
Q15: The synthetic herbicide 2,4-D is actually a(n):
A)cytokinin.
B)ethylene
Q16: How a plant cell responds to a
Q17: Gravitropism is a plant's:
A)directional response to gravity.
B)response
Q18: Pea plant tendrils wrapping around a string
Unlock this Answer For Free Now!
View this answer and more for free by performing one of the following actions
Scan the QR code to install the App and get 2 free unlocks
Unlock quizzes for free by uploading documents