BIOL 111 Lecture Notes - Gymnosperm, Sorus, Rhyniopsida

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maroonmallard463

26 Jun 2012

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BIOL 111 Full Course Notes

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Advanced green algae are ancestors of plants: all green algae have: Haplodiploid haploid dominant: pair of advanced groups jointly have: Sporophyte (diploid) is: single celled, matrotrophic (= mother eating, 2nd picture on this slide: open cell on the left is a reproductive organ. Onto land: freshwater algae, lived in ponds that dried out periodically, evolved ability to stay active during dry periods. Bio 111 alanna houston: challenges for moving onto land: Liverworts: like advanced algae: thallus, haploid dominant (sporophyte diploid matrotrophic, gametes flagellate and require water to swim (similar to amphibians) But different: cuticle (waxy coating on surface allows retention of water, rhizoid (= quasi root, sporophyte multicelled, oogonium archegonium (truly distinct sterile jackets, gemma cups for asexual reproduction o. Add: low mat growth form (3-10 cm, more complex sporophyte (capsule + operculum (lid), stomata, advanced mosses have a vascular system. Bryophytes (= moss plant) includes liverworts, hornworts, mosses.

Related Questions

Which of the following statements is true?

Question 7 options:

	In plants, gametes are produced by meiosis
	In animals, gametes are produced by mitosis
	Plants have both a multicellular diploid stage and a multicellular haploid stage
	Most fungi have a life cycle that includes a multicellular diploid stage.
	Most animals have a sexual life cycle that includes a multicellular haploid stage.

skyhamster121

1) What is the event that marks the transition from haploid to the diploid stage of the life cycle and what event marks the transition back to the haploid stage again. Describe the timing of these two cellular even in life cycles that are dominated by haploid cells, dominated by diploid cells or that have alternation of generations.

2) What are the closest relatives of land plants? How do you know this? What do these relatives tell us about the ancestors of green plants -- where did they live? How big were they?

3) Why was it the green algae that gave rise to land plants -- why donât we have relatives of red or brown algae living on land?

blackcod740

spores and gametes are ______ and ________
a. muticellular /dipolied b. multicelluar/haploid c. unicellar/dipolid d. unicellar/haploid or e. they can be any of theabove.

which of the following does not have isomorphic alternation ofgeneration?
a. porphra, b ulva, c etocarpus d griffitsia, e cladophora ab noneof the above
ac all the above

a maple tree is a vascular plant, therefore, it is a
a. zygote b gamete, c. spore, d gametophyte ab. it is none of theabove

the sporophyte generation is more dominant in
a. smaller less complex plants b large, more complex plants, c thegametophyte generation is equally dominant in all plants d thegametophte gen. is not dominant in any plants

whis true for a fern leaf and a fern spore? a. both are diploid bboth are haploied, c leaf is haploid, spore is diploid d . leaf isdiploid, spore is haploid

limeskunk182

BIOL 111 Lecture Notes - Gymnosperm, Sorus, Rhyniopsida

BIOL 111 Full Course Notes

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