Root hairs are tubular outgrowths of root epidermal cells in plants. These outgrowths help plants absorb water and nutrients by increasing root surface area. Root hairs form when membrane-bound structures inside root epidermal cells carry macromolecules to one side of the cell. There, the structures fuse with the plasma membrane, releasing their contents outside the cell. The released macromolecules are then incorporated into the elongating cell wall of the root epidermal cell, which allows the root hair to continue growing.
A group of scientists discovered a plant that had no root hairs. The scientists determined that this phenotype was due to a genetic mutation that inhibited the process by which root hair growth takes place. This mutation was located in the rth1 gene.
Based on the information above, which of the following cell processes did the rth1 mutation most likely inhibit in the plant with no root hairs?
A. Facilitated diffusion through membrane channels
B. Vesicle fusion during exocytosis
C. Receptor-mediated endocytosis
D. Membrane transport mediated by transmembrane ATPases

increase soil erosion                                             reduce soil erosion

cattle grazing                                                         hydroseeding

deforestation                                                         contour plowing

                                                                                planting vegetation

plant roots basically hold the top soil

together and stop soil erosion because

in such situation top soil is not removed

during flood but cattle grazing causes

soil erosion because cattle consume the

grasses and herbs and top soil is exposed.

same situation occurs because of

deforestation, the trees and plants are cut

down to expose top soil which causes soil

erosion

volcanoes (an event in the geosphere) release a large amount of particulate matter into the atmosphere. these particles serve as nuclei for the formation of water droplets (hydrosphere). rainfall (hydrosphere) often increases following an eruption, stimulating plant growth (biosphere).

answer: the correct option is d. enzyme

lactase and carbonic anhydrase are the examples of enzymes.

lactase is an enzyme, which is present in the small intestine of mammals. it in the digestion of the disaccharide, lactose ( milk sugar) by converting it into two monosachharide, which are glucose and galactose.

carbonic anhydrase is present in the red blood cells. this enzyme plays significant role in the transport of co₂. it in the conversion of co₂ and h₂o into carbonic acid, which is then dissociated into bicarbonate ions and hydrogen ions.