Question 10Which structure is the male gametophyte?O the microgametophytethe pollen grainthe megagametophytethe microsporeboth pollen grain and microgametophyte< Previous

Introduction : All plants and some algae species have a stage in their life cycle known as the…

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Which structure is the male gametophyte? the microgametophyte the pollen grain O the megagametophyte the microspore O both pollen grain and microgametophyte < Previous

Biology: The Unity and Diversity of Life (MindTap Course List)

15th Edition

ISBN:9781337408332

Author:Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr

Publisher:Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr

Chapter29: Life Cycles Of Flowering Plants

Section: Chapter Questions

Problem 4SQ: In flowrers, the structures that produce male gametophytes are called ______; the structures that...

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Question 23 Which of the following eventually develops into pollen grains? Sporophylls Ovules Megaspores Microspores
Abundant and powdery pollen produced by small, indistinct flowers is probably transported by: bees and butterflies flies birds wind
Question 9 1 pts Which cell helps support mature regions of the plant with its thick secondary cell wall? O xylem and phloem O sclerenchyma O collenchyma O parenchyma 1 pts Question 10 Sister chromatids move to opposite poles of the cell during what stage of meiosis? O anaphase II O anaphase I O metaphase I O metaphase I 1 pts
QUESTION 6 In bryophytes, the gametophyte is O the dominant generation O dependent on the sporophyte embedded within sporophytic tissues O all of the above O none of the above
QUESTION 2 In a typical member of Polypodiopsida, the O antheridia and archegonia are both formed on the prothallus O rhizomes are the most conspicuous part of the sporophyte gametophyte persists long after the sporophyte has become independent sporangia are produced on the upper surface of the leaves O roots develop by circinate vernation
Question 25 24. In epigeous germination, which structure emerges above ground first? cotyledon O epicotyl O hypocotyl coleoptile O radicle
Question 3 2. Which of the following statements about a stamen is FALSE? O It is a microsporophyll. O It usually consists of an anther and a filament. O It contains four microsporangia. O It contains pollen sacs. O It is part of the gynoecium.
vvs-moodle.pembinahills.ca/ Qwhere the three pl... G Free Printable De.... Female gametophyte YouTube Maps Formal vs. Info... Egg Sperm. Male gametophyte Zygote Sporophyte 3 Embryo Spores (haploid) Female gametophyte Which of the following statements identifies the similarity and difference between spores and gametes? a. They are both haploid cells, but spores are produced through meiosis while gametes are produced through mitosis. Ob. The spores are haploid cells while the gametes are diploid cells, but spores are produced through mitosis while gametes are produced through meiosis. The spores are haploid cells while the gametes are diploid cells, but spores are produced through meiosis while gametes are produced through mitosis. They are both haploid cells, but spores are produced through mitosis while gametes are produced through meiosis. Oc d.
A Your A Your Class S Launc 9 Launc S Launc A Foren E Fo X Foren O Grade M (be Foren monr ent/d/1JRG2bCkck5BmrGpQDI5IbLXeULosgV-36SOBBKS F8M/edit Request PARTS OF A GYMNOSPERM #23 Ovule Single scale (sporophyll) Megasporangium Megарoreocytе |#24 Integument Micropyie #25 Mature sporophyte Microsporangium Sporophyll
Student Preparation Read text Chapter 16, pages 366-390. Figure 1: Alternation of Generations Mitosis Spores 00 -+-+ 1111 Meiosis One cell from Sporophyte undergoes meiosis Gametophytes Haploid multicellular individuals 1n 2n - Gamete + Gamete Fertilization Sporophyte Diploid multicellular individual 1. Are these thalli the gametopytes or sporophytes? 2. Are the thalli haploid or diploid? Mitosis Exercise I Marchantiophyta: The Liverworts Examine with the dissecting microscope the thalli of the relatively large, dichotomously branching gametophytes of Marchantia Zygote 3. Are any gemma cups containing gemmae present on your plant? 4. What is the function of gemmae?. 78 Examine carefully with the dissecting microscope the additional liverworts that are available. Note the dichotomous branching, the midrib-like region, and the air pores on the upper (dorsal) surface. 5. How is dichotomous branching different from the branching pattern seen in higher plants? O 145x3
62 Ecology and Evolution Alternation of Generations Land plants have a two-generation life cycle called alternation of generations: 1. The sporophyte (diploid) generation produces haploid spores by meiosis. Spores develop into a haploid generation by mitosis. Label the appropriate arrow "mitosis" in Figure 17.3a. 2. The gametophyte (haploid) generation produces gametes (eggs and sperm) by mitosis. The gametes then unite to form a diploid zygote. The zygote becomes the sporophyte by mitosis. Label the appropriate arrow "mitosis" in Figure 17.3a. In this life cycle, the two generations are dissimilar, and one dominates the other. The dominant generation is larger and exists for a longer period. Figure 17.3 contrasts the plant life cycle (alternation of generations) with the animal life cycle (diploid life cycle). 1. In the plant life cycle, meiosis occurs during the production ofhaploid spores 2. In the human life cycle, meiosis occurs during the production of 3. In the plant life cycle,…
TRUE OR FALSE 1. A seed can remain dormant for days, months, or even years after being released from the parent plant, whereas most spores have shorter lifetime. 2. The male organ of the flower which is the anther. 3. If a sperm fertilizes an egg of a seed plant, the zygote grows into a gametophyte embryo.