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Transcript
Plant Lab Name: ___________________ Instructions: You and your lab partners will travel from station to station examining different plant structures and plant types. Pay attention to detail as you make your observations. You are to make clear, detailed drawings. Station #1: Vascular Seed Gymnosperm Gymnosperms are vascular plants because they have roots, stems, and leaves. They evolved seeds and the use of pollen grains in reproduction. The seeds are “naked” in that they are not enclosed in an ovary like in Angiosperm but inside cones. The pollen grains are the male gametophytes that develop into sperm. The pollen is able to travel through the air and dry environments, rather than traveling through water as the seedless vascular plants or the nonvascular plants. Drawing 1: Leaves of Gymnosperm Description of what it looks like, feels like, etc. ___________________________________________ ___________________________________________ ___________________________________________ ___________________________________________ ___________________________________________ ___________________________________________ ___________________________________________ ___________________________________________ Drawing 2: Cone of Gymnosperm Description of what it looks like, feels like, etc. ___________________________________________ ___________________________________________ ___________________________________________ ___________________________________________ ___________________________________________ ___________________________________________ ___________________________________________ ___________________________________________ Questions: What is the purpose of the cone? Station #2: Vascular Seed Angiosperm Angiosperms are vascular plants because they have roots, stems, and leaves. They evolved seeds and the use of pollen grains in reproduction. The seeds are enclosed in an ovary. The pollen grains are the male gametophytes that develop into sperm. The pollen is able to travel through the air, and by organisms carrying the pollen. Drawing 1: Leaves of a Monocot Angiosperm (show veins) Drawing 2: Leaves of a Dicot Angiosperm (show veins) Questions: What makes monocots and dicots leaves different? Station #3 : Angiosperm Seeds Drawing 1: Seed of a Monocot Angiosperm Drawing 2: Seed of a Dicot Angiosperm Questions: What makes monocots and dicots seeds different? Station #4: Angiosperm Reproductive Structures (a) Observe the male reproductive structures – the stamens. Each stamen consists of an anther and filament. (b) Observe the female reproductive structures – the pistil. Each pistil consists of an ovary, a stigma(“sticky”), and a style. Draw and LABEL the reproductive structures of the flower – look at the picture guide to help. Drawing 1: Male Part - Stamen Drawing 2: Female Part - Pistil Question: If this flower has petals arranged in 3’s, is it a monocot or dicot? (hint: look at the leaves) Station #5: Roots Observe the 2 types of roots at this station. And draw them below. Drawing 1: Carrot – Tap Roots Drawing 2: Grass – Fibrous Roots Questions: What is advantage of a tap root? What is the advantage of fibrous roots?