Where does most nutrient uptake occur in roots? a. at the root cap, where root tissue first encounters soil away from the zone of nutrient depletion b. at the Casparian strip, where ions must enter the symplast before entering xylem cells c. in the symplastic and apoplastic pathways d. in root hairs, in the zone of maturation

Verified step by step guidance

1. Step 1: Understand the question. The question is asking where most nutrient uptake occurs in roots. This is a multiple choice question, so one of the options provided is the correct answer.
2. Step 2: Recall what you know about roots. Roots are responsible for absorbing water and nutrients from the soil. They have different zones and structures that play a role in this process.
3. Step 3: Evaluate each option. The root cap is primarily involved in protecting the root tip and is not the main site of nutrient uptake. The Casparian strip is a barrier in the root that controls the movement of substances into the vascular tissue, but it is not where most nutrient uptake occurs. The symplastic and apoplastic pathways are routes through which water and solutes can move through plant tissues, but they are not specific locations within the root.
4. Step 4: The correct answer is d. Root hairs, which are located in the zone of maturation, are where most nutrient uptake occurs. Root hairs increase the surface area of the root, allowing for greater absorption of water and nutrients from the soil.
5. Step 5: Review the concept. Nutrient uptake in roots primarily occurs in the root hairs, in the zone of maturation. This is because root hairs provide a large surface area for absorption.