May u please help me with these questions May u please help me with these questi
ID: 195614 • Letter: M
Question
May u please help me with these questions May u please help me with these questions Thank you Contemporary Biological Problems Lab 14.1 The Evolution and Diversity of Land Plants Figure 14.1 shows the evolution of land plants. Circle the evolutionary events that led to the adaptarion of plants to land existence. Figure 14.1 Evolutionary relationships among the plants Fems and apical Lycophybes embryo elge Years Ago (MYA) Algal Ancestor of Land Plants In the evolutionary tree, the charophytes are green algae that share a common common ancestor may have resembled a Charales, such as Chara, occasionally dry up. Adaptation to such periodic desication may have facilitated the ability of certain ancestor with land plants. This which can live in warm, shallow ponds that members of the common ancestor population to invade land, and with time, become the first land plants. Observation: Chara e an an %cha Examine a living Chara (Fig. 14.2). How does it superficially resemble a land plant, Each branch has a series of very long cells. Note where one cell ends and the other begins. Measure the length of one cell. does it feel Chara is a filamentous green alga that consists of a primary branch and many side branches (Fig. 142) Gently pick up and handle Chara while you are examining it. What Its cell walls are covered with calcium carbonate deposit. 14-2 168 Laboratory 14 Nonvescular Plants and Seediess Vascular PlantsExplanation / Answer
Chara is a fungi which resembles a lot like plants. It is most closely related to plants because it has stem along with branches and one node. This makes the fungi look very similar to the plant. The characteristics like stem and branches makes it very much identical to the plants.
Chara is a fungi which is called as stoneworts because there is limestone or calcium carbonate encrust that forms after sometime.
Alterations of Generations
In the plant life cycle, meiosis is a stage which occurs during the production of spores. It is a unit of sexual or asexual production in plants which becomes dominant and can grow on receiving favourable environment.
In human life cycle, meiosis occurs during the production of gametes. The gametes are both male and female which fuse together to form a zygote.
In plant life cycle , the generation that produces gametes is in haploid. The chromosome number is half after gametophyte.
In the human life cycle, the individual that produces gametes is diploid(2n) stage.