Archives: Questions and Answers

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

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

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

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.

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

Most of a carrot, a root adapted for carbohydrate storage, is: – endodermis. – phloem. – xylem. – pericycle. – cortex.

In leaves, chloroplasts are found in _____. – xylem – palisade mesophyll – phloem – cuticle

Which of the following makes up most of an old tree trunk? – secondary xylem – primary phloem – meristem tissue – primary xylem – secondary phloem

Which of these tissues is between the epidermis and the vascular bundle in a young dicot stem? – phloem – pith – cortex – ground tissue – xylem

In a dicot stem, the ________ is between the vascular cambium and the cork cambium. – vascular cambium – phloem – vascular cylinder – cork – xylem