At a sugar sink, sugar is removed from phloem by _____. a) osmosis b) root pressure c) active transport d) diffusion e) transpiration

1 Answer
Water moves into phloem by _____. a) osmosis b) endocytosis c) root pressure d) active transport e) transpiration

1 Answer
The water pressure that pushes water and sugar from sugar source to sugar sink is referred to as _____. a) translocation b) transpiration c) bulk flow d) solute pressure e) root pressure

1 Answer
Sugar moves from leaves into the _____ of _____ by _____. a) sieve-tube members … xylem … active transport b) tracheids … phloem … diffusion c) tracheids … phloem … active transport d) sieve-tube members … phloem … active transport e) sieve-tube members … phloem … diffusion

1 Answer
_____ transport(s) sugars from leaves to, for example, taproots. a) Blood vessels b) Tracheids c) Vessel elements d) Xylem e) Phloem

1 Answer
Which of these processes is responsible for leaves being considered sugar sources? a) catabolism b) Krebs cycle c) photosynthesis d) citric acid cycle e) glycolysis

1 Answer
Tree roots are a ________ of sugars in spring and a ________ in the fall. a) source; source b) sink; sink c) sink; source d) source; sink

1 Answer
On the tip of the root, the apical meristem forms the ________, which prevents the meristem from being worn away as it pushes through the soil. – cortex – root cap – epidermis – endodermis – pericycle

1 Answer
Under the influence of hormones, branch roots emerge from the ________ of a growing root. – central cylinder – endodermis – epidermis – Casparian strip – pericycle

1 Answer
The location of the pericyle is best described as: – the outermost layer of the vascular cylinder. – just beneath the epidermis. – adjacent to the apical meristem. – lining the cells of the endodermis. – between layers of primary xylem and primary phloem.

1 Answer