Exam 2 Flashcards
T/F: Monocots have parallel leaf veins and vascular tissue arranged in a circular pattern.
False
T/F: Wheat and tomatoes are horticultural crops.
False
T/F: Tomatine, a poisonous chemical, is naturally occurring in tomatoes.
True
T/F: The greatest number of stomata are found on the upper side of the leaf blade.
False
T/F: The Christmas legend says the weeds that Pepita placed at the bottom of the nativity scene suddenly transformed int beautiful red flowers and have since been known as “Flowers of the Holy Night.”
True
T/F: Plants in the nightshade family can utilize atmospheric nitrogen to enhance plant growth.
False
T/F: Leaves are sinks for water, but sources for carbohydrates and sugars.
True
T/F: Evergreen plants shed their leaves, just not all at one time like deciduous plants.
True
T/F: Annual plants complete their lifecycle and lifespan in one growing season.
True
T/F: When you eat a potato you are technically eating a tuber; an enlarged underground stem.
True
T/F: Poison ivy is a deciduous perennial plant with compound leaves composed of 3 leaflets.
True
T/F: Monocots have axillary buds at every node.
False
Purpose of sepals
Small, leaf-like pieces attached to the receptacle.
Protects flower bud before it opens.
Neither male nor female.
Role of the apical meristem
In the cell-division zone of plant roots.
Divides cells to increase root length/strength.
What happens when the top eight inches of a tree’s central leader are removed?
Water and nutrients are directed to damaged area to stimulate growth.
New shoots form from upper axillary buds.
Purpose of root hairs
Only portion of the root that absorbs water.
Grow quickly, especially when it rains.
Purpose of root cap
Protects the root tip as it burrows deeper into the soil.
Replaces itself often.
What compound causes the poison ivy skin reaction?
The oil causes an allergic reaction.
The compound is called urushiol.
How can you minimize your chances of developing a rash after poison ivy exposure?
Rinse area that came into contact with oil.
Carefully remove and wash clothing that may have come in contact.
Apply aloe and take an over-the-counter allergy medication, like benadryl.
Two examples of polycarps
Orange trees
Apple trees
Describe angiosperms
Seeds are protected by fruit/ovary.
All angiosperms protect their seeds, however, fruit produced by some plants may be difficult to identify.
Examples of angiosperms
Cherry trees
Peach trees
Sunflowers
Describe gymnosperms
Seeds are not protected by fruit.
Gymnosperms also have flowers, however, they may be difficult to identify.
Examples of gymnosperms
Pine trees
Spruce trees