Diversity
All vascular plants have this type of water conucting cell in their xylem.
What is a tracheid?
Megaphylls are thought to have evolved from this anatomical structure.
What is a branch?
This is the first part of the plant to emerge from a germinating seed.
What is the radlcle?
This term is used for the yellowing of a leaf due to nutrient deficiency.
What is chlorosis?
Caffeine, nicotine, and morphine are all members of this class of secondary metabolites.
What is an alkaloid?
This is the most speciose phylum of living gymnosperms.
What are the conifers?
The middle lamella between adjacent cells is composed largely of water and this carbohydrate.
What is pectin?
This genetic phenomenon that can lead to rapid speciation is much more common in plants than animals.
What is polyploidy?
When a nutrient deficiency shows up first in older leaves, it must have this property.
What is phloem-mobile?
This ancient event turned free-living photosynthetic bacteria into (sometimes) photosynthetic organelles.
What is endosymbiosis.
A lifecycle that includes both a haploid gametophyte and diploid sporophyte phase.
What is alternation of generations?
This kind of spore produces only female gametophytes.
What is a megaspore?
This response to touch enables vine tendrils to climb up the stems of other plants.
What is thigmotropism?
This is the carbon-fixing enzyme in C3 plants.
What is Rubisco.
This biome is characterized by an abundance of sphagnum bogs.
What is tundra?
Ovules with double integuments are unique to this phylum.
What is angiosperm (Anthophya)?
Some ferns may have their sori covered by these structures.
What are indusia?
This protein that switches between red and far-red wavelength-detecting forms enables plants to count the length of the night.
What is phytochrome?
This is the carbon-fixing enzyme in C4 and CAM plants
PEP carboxylase
This center of domestication gave the world wheat.
What is the fertile crescent?
Reproduction in this phylum of plants may be either heterosporous or homosporous.
What is Monilophyta (ferns & horsetails)?
In C3 plants, most photosynthesis occurs in this layer of cells within the leaf.
What is palisade parenchyma?
Fruits with this property ripen after a spike in ethylene production.
What is climacteric?
What is cohesion-adhesion-tension?
Loss of this trait during domestication allowed the seeds of grain crops to be harvested from the plant rather than the ground.
What is shattering?