PDF-Fig 52Stages of gametophyte development a megaspore with 2 nucleu

19 EXERCISE 5 abcEggSynergidsCentral cellSecondary nucleusAntipodalsdeiiiNote the contents of embryo sac namely an egg apparatus2 synergids and egg at micropylar end secondary nucleus. Objectives of lecture. Know possible origin of plants. Understand Alternation of generations concept. Green algae as ancestors of land plants. Green algae as ancestors. Green algae are considered to be ancestors of land plants. Pole Fig. 1 Fig. 3Fig. 2 Fig. 5 Fig. 4 STITCH LINE Read all instructions before set up.Select a level site clear of rocks, branches, and other hard or sharp objects, to install your tent. WARNING: Ke most protons fall in this region Bo increaseso decreasesUpfieldShielded High frequencyLow frequency The chemical shifts of protons on carbon in organic molecules fall in several distinct regions, dep General . Characteristics and . structures . – These organisms are . all multicellular eukaryotes that are autotrophs . and acquire their nutrients by . photosynthesis. . . They have plastids which contain chlorophyll A, Chlorophyll B, and carotenoids and the cells have walls consisting of Cellulose. . Chapter 7: Section 2. Seedless Plants. How do seedless plants reproduce?. Include all nonvascular plants and some vascular plants. Vascular vs. nonvascular. Nonvascular plants do not have structures that transport substances through the plant. (mosses, liverworts and hornworts). What are bryophytes?. . Bryophytes are the oldest land plants on earth, and have been around for 400 million years or more. Although small, they can be very conspicuous growing as extensive mats in woodland, as cushions on walls, rocks and tree trunks, and as pioneer colonists of disturbed habitats. . Evolution of Land Plants. Land plants evolved from green algae. The green algae called charophyceans are the closest relatives of land plants. Comparisons of both nuclear and chloroplast genes. Point to charophyceans as the closest living relatives of land plants.  . Gene transfer, asexual reproduction, sexual reproduction, and apomixis . viachicago.wordpress.com. t. inyfarmblog.com. b. irdsandbloomsblog.com. Asexual reproduction. . The clone is immortal . Example: . . Lab 4 : Vascular plants . Introduction . Objectives . Identify . some characteristics . of seed vascular plants ( . Gymnosperms & Angiosperms . ). 4. Seed vascular . plant . I. Gymnosperms . . Phylum:Pteridophyta-True Ferns. Phylum: Pteridophytes -True Ferns…. Sporophyte . dominant and long-lived. Leaves are large, called . fronds. The following steles occur : . protostele. (all types) and . General Biology II. BSC 2011. Download for free at . http://cnx.org/contents/185cbf87-c72e-48f5-b51e-f14f21b5eabd@10.61. introduction. The next couple of chapters will talk about the land plants. Mainly Kingdom Plantae. Chapter 29 and 30. What is a plant?. Multicelled. Eukaryotic. Autotrophic. Cell wall made of cellulose. Additional Characteristics. Cuticle. Stomata. Secondary products (poisons, lignin, . sporopollenin. : Reproduction. Reproduction. Vegetative . propagation is brought about by buds produced at the leaf tips. The buds enter the ground when the leaf bends and touches the soil. There they develop into a new individual. This, in turn may repeat the process leading to the walking Habit. Walking habit is seen in . The formation of female gametes take place inside the ovules which consists of following steps:. Mega . sporogenesis. Mega . gametogenesis. Gametogenesis. - . development of male and female gametes and their structures.