Why does pinching off the top of a plant make it bushier?
Removing the apical meristem stimulates growth in the axillary buds, thus making the plant bushier.
Water-conducting cells of plants are called _____
Tracheids and vessel elements
A region of dividing cells in a plant is called a _____.
meristem
Which example below is the site of primary growth that results in the plant increasing in height?
apical meristems
Artichoke hearts are tender and have a strong taste. The leaves have a strong taste, too, but most of an artichoke leaf is fibrous and too difficult to chew. The leaves must contain lots of __________.
sclerenchyma cells
Evolutionary adaptations of stems include ______
Stolons and tubers
leaves consist of
blade and petiole
The layer that covers the apical meristem of a root is called the ______
root cap
_____ are the three basic plant organs
Roots, stems, leaves
Evolutionary adaptations of roots include all of the following root structures except __________.
Stolons
Leaves occur at intervals along the plant stem. The region where a leaf is attached to the stem is the _____.
node
Sugar-conducting cells of the phloem
alive at functional maturity
In woody plants, the vascular cambium initial is ______
Mitotic ally active and divides to form an inner layer of secondary xylem and an outer layer of secondary phloem
The main difference between a primary root and a lateral root is that ________
Lateral roots enhance the ability of the root system to anchor the plant and acquire resources from the soul
The three types of tissue systems that are found in all plant organs are _____
Dermal, ground, vascular
In most leaves, chloroplast-containing cells are most closely compacted in the _____
mesophyll
Which of the following correctly describes a feature unique to monocot stems?
vascular bundles are scattered throughout the stem
Evolutionary adaptations of leaves include all of the following except _____
Rhizomes
Most of the photosynthesis in plants takes place in specialized ______ cells called the _____
parenchyma ... mesophyll
What accounts for about 90% of a plant cells expansion?
the uptake of water that is stored in a large central vacuole.
Water uptake accounts for 90% of expansion. Most of this water is packaged in the large central vacuole formed by the coalescence of many smaller vacuoles.
Root tips are pushed farther into the soil mainly by __________.
elongation of cells.
Roots elongate primarily because of elongation of cells in the zone of elongation.
The -____ of a root or a stem is called the _____
Vascular tissue, stele
Phase changes are ________
Morphological changed that arise from transitions in shoot apical meristem activiry
If you pound a nail into a tree 1 meter off the ground and come back to find it in 20 years, it will be
1 meter off the ground and more deeply embedded in the tree
Annual rings
Vascular cambium
The difference between primary growth and secondary growth is that ______
Lengthens root and increases diameter. Short.