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 Root hairs develop from the: – Casparian strip. – pericycle. – cortex. – endodermis. – epidermis.
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BNO Team