bio 2 test 2
the ploidy of the endoseperm of a member of the division magnoliophyta seed is typically _______
3N
the leaf's internal concentration of _________ is reduced during photosynthesis
CO2
the _______ is the male sexual structure that produces sperm in plants
anteridium
terrestrial plants obtain carbon dioxide, required for photosynthesis, from the
atmosphere
the two types of support cells in the stem of the plant are _______ which is generally alive at maturity and _______ which is dead at maturity
collenchyma, sclerenchyma
the endosperm of the flowering plant is formed as a result of the fertilization of the _________ and _________.
diploid nucleus, one sperm of the pollen
the needles of pine and other conifers are adapted to
dry condtions
the plant zygote is produced from the fertilization of the
egg
the largest cones produced on a pine tree, the ones we are typically most familiar with, are the female cones that contain ________
eggs
the _______ in the root functions as to the specificity of materials that enter the vascular system of the plant
endodermis
the transition from the gametophyte into the sporophyte generation occurs after the occurrence of
fertilization
the ________ generation is dominant in mosses, as it can live independently
gametophyte
which structure or structures function to open and close the stomata
guard cells
many seedless plants produce spores of one morphological type, which is reffered to as
homospory
the _______ are most diverse, successful, and familiar phylum of plants today
magnoliophyta
list one advantage a terrestrial photosynthesizing prganism has over an algae
more CO2
when water potential of the soil is less than the water potential of the root system water will move
out of the cell
reduction of carbon dioxide is important during photosynthesis as it results in _________ being used by rubisco
oxygen
plant tissue in which the following pathway "6CO2 +......" occurs in the
parenchymal
primary function of leaves is
photosynthesis
a flower lacking a microsporangium would not be able to produce
pollen
in plants, pholem is associated with transport of
products of photosynthesis
concentric rings found in the wood of trees are what specific type of tissue
secondary xylem
heterospory was an important evolutionary development, as it led to the evolution of ________.
seeds
in plants of the divisions coniferophyta and magnoliophyta , ovules develop into ______
seeds
the leafy fern that you might have as a house plant is the ___________ generation
sporophyte
the diploid portion of a plant life cycle is
sporophyte generation
mosses and liverworts are limited in size because they lack _________.
vascular tissue
the process of photosynthesis involves the conversion of ______ and ______ into a(n) _______
water, carbon dioxide, sugar
the primary disseminating mechanism of pine pollen is
wind
the distinct haploid state and diploid stage in the life cycle is referred to as _______
alternation of generations
ferns are considered advanced over mosses because ferns have true roots and vascular tissue. However, what structures are lacking in both ferns and mosses in comparison with conifers?
seeds/pollen
in plants, xylem is associated with transportation of ________ and ________
water and minerals
