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