Question
A student observes that a popcorn kernel has a hard coat. He places the kernel in a moist paper towel and observes it for several days. He notices that the coat splits and a small root emerges. He concludes that
A.
water inside the seed coat exerted a pushing force, breaking the seed coat.
B.
air inside the seed coat exerted a pushing force, breaking the seed coat.
C.
gravity exerted a pulling force on the stem, breaking the seed coat.
D.
water outside the seed coat exerted a pulling force, breaking the seed coat.
A.
water inside the seed coat exerted a pushing force, breaking the seed coat.
B.
air inside the seed coat exerted a pushing force, breaking the seed coat.
C.
gravity exerted a pulling force on the stem, breaking the seed coat.
D.
water outside the seed coat exerted a pulling force, breaking the seed coat.
Answers
GPT-4o mini
The student's observation that the kernel's coat splits and a small root emerges after being placed in a moist environment leads to the conclusion that the water inside the kernel plays a significant role in breaking the seed coat.
Therefore, the correct conclusion would be:
**A. water inside the seed coat exerted a pushing force, breaking the seed coat.**
This is because as the kernel absorbs water, it swells, and the pressure from the expanding contents can cause the hard seed coat to split.
Therefore, the correct conclusion would be:
**A. water inside the seed coat exerted a pushing force, breaking the seed coat.**
This is because as the kernel absorbs water, it swells, and the pressure from the expanding contents can cause the hard seed coat to split.