AP BIOLOGY

PLANTS

ROOTS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
In the zone of elongation, the root cells begin to elongate primarily by filling their cell vacuoles with ____
A
salt
B
water
C
minerals
Explanation: 

Detailed explanation-1: -The zone of elongation is where the newly formed cells increase in length, thereby lengthening the root. Beginning at the first root hair is the zone of cell maturation where the root cells begin to differentiate into special cell types.

Detailed explanation-2: -Roots elongate by a process of meristem cells dividing and expanding, followed by cell expansion in the elongation zone (Ubeda-Tomás et al., 2012).

Detailed explanation-3: -Cytosol homeostasis during cell expansion. The cellular space occupied by the vacuole (occupancy) increases dramatically during elongation, allowing to keep the cytosolic volume relatively constant.

Detailed explanation-4: -Final answer: The region of elongation is responsible for the growth of the root in length.

There is 1 question to complete.