slide prepared fern frond leaflet with sori cross section Observation Fern

Slide prepared fern frond leaflet with sori cross

This preview shows page 104 - 106 out of 208 pages.

_____slide, prepared; fern frond leaflet with sori, cross section Observation: Fern Gametophyte(LM pages 218--219)_____fern life cycle plastomount _____fern minimarsh _____slide, prepared: fern prothallium-archegonia, whole mount _____slide, prepared: fern prothallium-antheridia, whole mount EXERCISE QUESTIONS16.1 The Evolution and Diversity of Land Plants (LM pages 206–208)Circle the evolutionary events that led to adaptation of plants to a land existence. Students should circleembryo protection, apical growth, vascular tissue, megaphylls, seeds, flowers, and fruitAlgal Ancestor of Land Plants (LM page 206)Observation: Chara(LM page 206)How does it superficially resemble a land plant?Has a stem and branches.Measure the length of one cell. Will be several cm.What does it feel like? roughConclusions: Chara(LM page 206)What characteristics cause Charato resemble land plants? appearance, protects zygoteWhy are Characalled stoneworts? covered with calcium carbonate depositsAlternations of Generations (LM page 208)1. When does meiosis occur in the plant life cycle?Meiosis occurs in the productionof spores. In Figure 16.3. 2. When does meiosis occur in the animal life cycle?Meiosis occurs in the production of gametes.3. Which generation produces gametes in plants?gametophyte4. Which generation (sporophyte or gametophyte) is better adapted to a land environment?sporophyteExplain.The sporophyte has vascular tissue, which transports materials to all parts of the plant and provides structural support.16.2 Nonvascular Plants (LM pages 209-212)1. Put a check mark beside the phrases that describe nonvascular plants.The phrases that describe nonvascular plants are all in group I.2. Which two of the features you checked cause nonvascular plants to be low-lying? No vascular tissue to transport water and flagellated sperm that swim to egg.3. Which listing of features (I or II) would you expect to find in a plant fully adapted to a land environment?group IIExplain.All of these features enable the plant to be successful on land.104
4. How are windblown spores an adaptation to reproduction on land?Windblown spores, which lack flagella, no longer require water for dispersal.Observation: Moss Gametophyte (LM page 210)Living or Plastomount (LM page 210)Obtain a living moss gametophyte or a plastomount of this generation. Describe its appearance.It has a stemlike structure covered with whorls of leaflike structures.Microscope Slide (LM page 210)

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture