LABORATORY REVIEW
DIFFUSION AND OSMOSIS
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
1 and 2 only
|
|
|
1 and 3 only
|
|
|
2 and 3 only
|
|
|
1, 2 and 3
|
Detailed explanation-1: -Active transport is the process that helps to move the molecules against a concentration gradient. So, the active transport is the process that moves mineral ions into root hair cells through membrane proteins.
Detailed explanation-2: -Water enters the root hair cells by osmosis. This happens because soil water has a higher water potential than the cytoplasm of the root hair cell. Minerals enter by active transport .
Detailed explanation-3: -Root hair cells Plants absorb water from the soil by osmosis. They absorb mineral ions by active transport, against the concentration gradient. Root hair cells are adapted for taking up water and mineral ions by having a large surface area to increase the rate of absorption.
Detailed explanation-4: -Active transport is a process that is required to move molecules against a concentration gradient. The process requires energy. For plants to take up mineral ions, ions are moved into root hairs, where they are in a higher concentration than in the dilute solutions in the soil.