LIFE 103 EXAM 1 CSU TEST BANK 2026
UPDATED QUESTIONS WITH ANSWERS
GRADED A+
⩥ Ovule. Answer: consists of a megasporangium, megaspore, and one or
more protective integuments (outside coating)
⩥ Megasporangium (Gymnosperm Female Anatomy). Answer: diploid
tissue where haploid megaspore is formed (meiosis)
⩥ Megaspore(Gymnosperm Female Anatomy). Answer: haploid cell that
grows into female gametophyte, including the egg nucleus
⩥ Microsporangium(Gymnosperm Male Anatomy). Answer: diploid
tissue where haploid microspores are formed (meiosis)
⩥ Microspores (Gymnosperm Male Anatomy). Answer: develop into
male gametophyte
⩥ Pollen. Answer: contains the male gametophyte within the tough
pollen wall. Structure influenced by dispersal methods, exterior
composed largely of sporopollenin
,⩥ Gymnosperm Fertilization. Answer: Pollen released into the air,
pollen grain reaches ovule and germinates, pollen tube grows digesting
through megasporangium, pollen tube reaches egg nucleus and
discharges sperm nucleus into egg nucleus of female gametophyte
⩥ Pollen Grains. Answer: developed from microspores, which contain
the male gametophytes
⩥ Pollination. Answer: is the transfer of pollen to the part of a seed plant
containing the ovules
⩥ Evolutionary Advantage of Seeds. Answer: A seed develops from the
whole ovule, a seed is a sporophyte embryo, along with its food supply,
packaged in a protective coat. A seed provides some evolutionary
advantages over spores: they remain dormant for days to years, until
conditions are favorable for germination. They maybe be transported
long distances by wind or animals
⩥ The gymnosperms have naked seeds not enclosed by ovaries and
consist of what 4 phyla?. Answer: Cycadophyta (Cycads),
Gingkophyta(one living species: Ginko boloba), Gnetophyta (Three
genera Gnetum, Ephedra and Welwitschia), and Coniferophyta (conifers
such as pine, fir and redwood)
⩥ Phylum Cycadophyta. Answer: individuals have large cones and palm
like leaves
, ⩥ Phlum Ginkgophyta. Answer: phylum consists of a single living
species, Ginkgo Biloba
⩥ Phylum Gnetophyta. Answer: phylum comprised of three genera
⩥ The Carpel. Answer: consists of an ovary at the base and a style
leading up to a stigma, where pollen is received.
⩥ The Female gametophyteor embryo sac. Answer: develops within an
ovule contained within an ovary at the base of the stigma
⩥ The Stamen. Answer: modified microsporophyll (sepals, pedals,
stamen and carpels), male part of the flower
⩥ Complete Flower. Answer: has all modified leaves
⩥ Incomplete flower. Answer: is missing one or more leaves
⩥ Perfect Flowers. Answer: have both male and female parts
⩥ Selfing Plants. Answer: Perfect flowers can theoretically self pollinate
UPDATED QUESTIONS WITH ANSWERS
GRADED A+
⩥ Ovule. Answer: consists of a megasporangium, megaspore, and one or
more protective integuments (outside coating)
⩥ Megasporangium (Gymnosperm Female Anatomy). Answer: diploid
tissue where haploid megaspore is formed (meiosis)
⩥ Megaspore(Gymnosperm Female Anatomy). Answer: haploid cell that
grows into female gametophyte, including the egg nucleus
⩥ Microsporangium(Gymnosperm Male Anatomy). Answer: diploid
tissue where haploid microspores are formed (meiosis)
⩥ Microspores (Gymnosperm Male Anatomy). Answer: develop into
male gametophyte
⩥ Pollen. Answer: contains the male gametophyte within the tough
pollen wall. Structure influenced by dispersal methods, exterior
composed largely of sporopollenin
,⩥ Gymnosperm Fertilization. Answer: Pollen released into the air,
pollen grain reaches ovule and germinates, pollen tube grows digesting
through megasporangium, pollen tube reaches egg nucleus and
discharges sperm nucleus into egg nucleus of female gametophyte
⩥ Pollen Grains. Answer: developed from microspores, which contain
the male gametophytes
⩥ Pollination. Answer: is the transfer of pollen to the part of a seed plant
containing the ovules
⩥ Evolutionary Advantage of Seeds. Answer: A seed develops from the
whole ovule, a seed is a sporophyte embryo, along with its food supply,
packaged in a protective coat. A seed provides some evolutionary
advantages over spores: they remain dormant for days to years, until
conditions are favorable for germination. They maybe be transported
long distances by wind or animals
⩥ The gymnosperms have naked seeds not enclosed by ovaries and
consist of what 4 phyla?. Answer: Cycadophyta (Cycads),
Gingkophyta(one living species: Ginko boloba), Gnetophyta (Three
genera Gnetum, Ephedra and Welwitschia), and Coniferophyta (conifers
such as pine, fir and redwood)
⩥ Phylum Cycadophyta. Answer: individuals have large cones and palm
like leaves
, ⩥ Phlum Ginkgophyta. Answer: phylum consists of a single living
species, Ginkgo Biloba
⩥ Phylum Gnetophyta. Answer: phylum comprised of three genera
⩥ The Carpel. Answer: consists of an ovary at the base and a style
leading up to a stigma, where pollen is received.
⩥ The Female gametophyteor embryo sac. Answer: develops within an
ovule contained within an ovary at the base of the stigma
⩥ The Stamen. Answer: modified microsporophyll (sepals, pedals,
stamen and carpels), male part of the flower
⩥ Complete Flower. Answer: has all modified leaves
⩥ Incomplete flower. Answer: is missing one or more leaves
⩥ Perfect Flowers. Answer: have both male and female parts
⩥ Selfing Plants. Answer: Perfect flowers can theoretically self pollinate
