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hetero eukaryotes that digest their food externalles and abosrob the small molecules are refferet to as
during the carboniferious period, forests consisting mainly of ____ produces vast quantities of organic matter, which was buried and later turn into coal
ferns and other seedless vascular plants
deep in the tropical rain forest, a botanist discvoered an unusual plant with vascular tissurs, stomata, a cuticle, flagelleated sperm, conelike reproductive tructures bearings seeds, and an alternation-of-generation cycle. he was very excited baotu this discovery becasue it would be rather unusaul for a plant to hav both
seeds and flagelatted sperm
which of the following plants has a dominant sporophyte generation and a seed but no fruit
fungi cannot make their own food, and they cannot move. how fo they fid thigns to eat
the produce huge numbers of tiny spred that spread to nearby food and they grow rapidly into their food sources
unlike most angiosperms, grasses are pollinated by wind. as a consequences, some unnessary" parts of grass flowers have almost disappeared. wih of the foolwing parts would you expect to be most reduces in grass flower
which of the following has a dominant sporophyte generation adn a free living gamophyte generation
the angio sperm plant we see represents the ____ generation, adn the flower produces t _________
sporophyte and gameophyte
which od the following stages in the life cycles of a maple tree corresponds to the leafy, spongy plants in the moss life cycle
pollen grain and ovule
which of the following adaptions to a terrestiral existence is are foudn in ferms
vascualr tissue for nutrietns transport adn support
fungo are found assocatied with the earliest plant fossils. which of the follwing is a way in which fungi may have helped plants become terrestrial
by formins mycorrihical assocaitions and helping early plants to extract mineral nutrients form histile soils
reduction of the gameophyte generateion offerns benifits of
increased protection from damage to DNa and increased ability to deal iwth changes in environemnt due to genetic variation
which of the following correctly describes the alternation of generation in plant life cycles
diploid sporophyte that produce spores by meiosis alternate with gamephyte that produce gamete by mitosis
the heterokaryotic phase of a fungal cucle is
a stage in which hypahe contian two gentically differnt hapoild nuclie
which of the following are true
the elaves of palnts are covered by a waxy cuticle that helpes protoect the leaves of disicciation
where and when deos fertilizatrio occur in the mushroon life cycles
in a mushroom, when nuclei a dikaryotic cells fuse
which of the follwing points supports the endsymbiotic theory of sukaryotic cell developemtn
mitochoncris have theri won DNa moelcules
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