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46 Cards in this Set
- Front
- Back
Land plants are believed to have evolved from |
Charophytes |
|
in the bryophytes, the sporophyte is |
dependent on the gametophyte generation |
|
Liverworts and mosses use what pigments for photosynthesis? |
Clorophylls a & b carotenes xanthophylls |
|
Which best describes the concept of alternation of generations? |
There are two phases: a sporophyte and a gametophyte |
|
Alternation of heteromorphic generations |
is common to all land plants |
|
An organ that is hygroscopic |
is sensitive to change in moisture is exemplified by the peristomal teeth in the sporophyte of mosses may aid in spore dispersal in mosses |
|
Gemmae function for? |
Asexual reproduction |
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sperm find their way to the archegonium |
by swimming due to chemical gradient diffusing from the archegonium as a result of sucrose being released during the breakdown of the neck canal cells of archegonium |
|
a protonema |
is the product of spore germination of a moss |
|
the suffix -phore is derived from the greek word meaning |
branch |
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The sporophyte is the dominant and conspicuous generation in |
the fern allies and ferns gymnosperms flowering plants |
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a tracheophyte is a plant that has |
xylem and phloem |
|
psilotum lacks |
roots |
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Spore germination followed by cell division results in the production of |
a gametophyte |
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what best describes a plant that is epiphyte |
A plant that grows upon another plant |
|
Club mosses |
are so called because most produce strobili |
|
the resurrection plant |
is a species of Selaginella grows in the desert southwest of the united states is a member of the phylum lycophyta |
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in ferns |
xylem and phloem are present in the sporophyte the sporophyte is the dominant generation the leaf is called a frond |
|
conifers
|
are gymnosperms all conifers have naked seeds heterosporous |
|
seed plants |
have alternation of generations are heterosporous develop a seed coat |
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a pine tree is |
a sporophyte diploid |
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the male pine cone |
produces pollen |
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the male gametophyte of a pine tree |
is produced within a pollen grain produces sperm |
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which of these are produced directly by meiosis in pine |
microspores |
|
an ovule |
si the structure that develops into a seed |
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the process by which pollen is transferred to the ovule is called |
pollination |
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what is true of the female gametophyte of pine |
its a product of repeated cell divisions of the functional megaspore its haploid it serves as the stored food to be used by the embryo sporophyte upon germination |
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plants that produce flowers are |
members of the anthophyta angiosperms seed producers |
|
all of the petals of a flower are collectively called the |
corolla |
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which group of terms refers to the microsporophyll, the male portion of a flower |
anther, stamen, filament |
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a carpel is the |
same as a megasporophyll |
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the portion of the flower containing pollen grains is |
the pollen sac the microsporangium the anther |
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which group of terms is in the correct developmental sequence |
microspore mother cell, meiosis, megaspore, female gametophyte |
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where does germination of pollen grain occur in flowering plant |
on the stigma |
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double fertilization refers to |
fusion of one sperm nucleus with tow polar nuclei and fusion of another with the egg cell nucleus |
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ovules mature into ____, while ovaries mature into,_______ |
seeds/ fruits |
|
a bean pod is |
a seed container a fruit |
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an organism that grows specifically on nonliving organic material is called? |
a saprophyte |
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taxonomic seperation into fungal phyla is based on |
sexual reproduction, or lack thereof |
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fungi is to fungus as sporangia is to ____________ |
sporangium |
|
zygospore- forming fungi |
are in the phylum zygomycota rhizopus is a representative genus a zygospore is formed after fertilization |
|
which structures would you find in a sac fungus |
ascongonia, asci, ascocarps, ascospores |
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the club fungi are placed in the phylum basidiomycota |
because they form basidia |
|
a relationship between two organisms in which both members benefit is said to be |
mutualistic |
|
an organism that is made up of a fungus and an associated green alga or cyanobacterium is known as a |
lichen |
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a mutualistic association between plant root and fungus is known as a |
mycorrhizal root |