You are watching: Retaining the zygote on the living gametophyte of land plants _____.
Which the the following were probably determinants that permitted early plants to successfully colonize land?1. The relative number of potential predators (herbivores)2. The relative variety of competitors3. The relative ease of access of symbiotic partners4. Air"s relative lack of support, contrasted to water"s support
image with life cycle 7- tires gametophyte11-embryo4-meiosis3-megspore6- mitosis10-endosperm formation
liverworts, hornworts, and also mosses are grouped with each other as the Bryophytes. Besides not having vascular tissue, what do they all have in common?
Most moss gametophytes carry out not have actually a cuticle and also are 1-2 cells thick. What does this imply about moss gametophytes and also their structure?
During the Carboniferous period, forests consisting mostly of _____ produced substantial quantities of necessary matter, which was buried and also later ended up being coal.
A botanist discovers a new species of plant in a dry rain forest. ~ observing that anatomy and also life cycle, he notes the adhering to characteristics: flagellated sperm, xylem v tracheids, different gametophyte and sporophyte generations with the sporophyte dominant, and no seeds. This plant is probably most very closely related come _____.
If humans had actually been present to build log structures throughout the Carboniferous duration (they to be not), which plant varieties would have actually been an ideal sources the logs?
Arrange the following terms from many inclusive to least inclusive.1. Embryophytes2. Eco-friendly plants3. Seedless vascular plants4. Ferns5. Tracheophytes
Besides oil, what other chemical should be recognize in substantial quantities upon chemical evaluation of these small spheres?
What attribute of both true mosses and also ferns renders it most surprising the they deserve to survive for numerous generations in dry deserts?
Upon closer investigate of the leaves of "flower the stone," one can observe tiny, cone-like structures. Each cone-like structure emits spores of two various sizes. More investigation likewise reveals the the roots of "flower of stone" branch just at the growing tip that the root, forming a Y-shaped structure. Consequently, "flower the stone" must be expected to own which various other characteristics?1. A gametophyte generation that is dominant2. Lignified vascular tissues3. Microphylls4. Filamentous rhizoids, yet not true roots5. Spores that are diploid once mature
In which combination of areas would one that is in search of the gametophytes of "flower of stone" have actually the best chance of recognize them?1. Moist soil2. Underground, nourished over there by symbiotic fungi3. South- or west-facing slopes4. Permanently shady places5. Far from any flower of rock sporophytesUse the complying with information to answer the question(s) below.
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Increasing the number of stomata every unit surface area the a leaf once atmospheric carbon dioxide levels decrease is most analogous to a person _____.