The most recent common ancestor of all land plants was most similar to modern-day members of which group?
Peptidoglycan is to the structural integrity of bacteria as ____ is to the structural integrity of plant spores.
Which kind of plant tissue should lack phragmoplasts?
d. tissues performing nuclear division without intervening cytokineses
A number of characteristics are very similar between charophyceans and members of the kingdom Plantae. Of the following, which characteristic does not provide evidence for a close evolutionary relationship between these two groups?
a. alternation of generations
A researcher wants to develop an assay (test) that will distinguish charophyceans and land plants from chlorophyte green algae. Which of the following chemicals would be the best subject for such an assay?
d. glycolate oxidase-an enzyme of peroxisomes that is associated with photorespiration
In animal cells and in the meristem cells of land plants, the nuclear envelope disintegrates during mitosis. This disintegration does not occur in the cells of most protists and fungi. According to our current knowledge of plant evolution, which group of organisms should feature a mitosis most similar to that of land plants?
On a field trip, a student in a marine biology class collects an organism that has differentiated organs, cell walls of cellulose, and chloroplasts with chlorophyll a. Based on this description, the organism could be a brown alga, a red alga, a green alga, a charophycean recently washed into the ocean from a freshwater or brackish water source, or a land plant washed into the ocean. Which of the following features would definitively identify this organism as a land plant?
e. presence of embryos
Some green algae exhibit alternation of generations. All land plants exhibit alternation of generations. No charophyceans exhibit alternation of generations. Keeping in mind the recent evidence from molecular systematics, the correct interpretation of these observations is that
b. plants evolved alternation of generations independently of green algae.
Which of the following was not a challenge for survival of the first land plants?
d. animal predation
The following are all adaptations to life on land except
a. rosette cellulose-synthesizing complexes.
Mitotic activity by the apical meristem of a root makes all of the following more possible except
a. increased length of the above-ground stem.
Which event during the evolution of land plants probably made the synthesis of secondary compounds most beneficial?
d. the rise of herbivory