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Q.Q. 03/26 (4th Quarter!) Name three defining characteristics of plants: 1. _____________________________ 2. _____________________________ 3. _____________________________
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Unit 9-PLANTS tschwartz
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Intro to Plants Video
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PLANTS: structure and function
What is a plant? Plants have eukaryotic cells with cell walls Plants carry out photosynthesis
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Let’s Recap Photosynthesis:
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How Do Plants Get Energy?
Plants are producers (autotrophs) Plant leaves change light energy into energy the plant can use. (GLUCOSE) Stomata are tiny holes on the bottom of the leaf that let CO2 in and O2 out. Plant leaves change light energy into energy the plant can use. (GLUCOSE) Roots get water and minerals directly from the soil. They get sunlight, water, and CO2 The veins of a leaf bring water and minerals to the leaf from the stems and roots.
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How Do Other Living Things Get Energy?
All living things need energy to survive Consumer – a living thing that gets energy by eating plants and other animals
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Plants: Grouped by characteristics
Vascular Plants Three main parts: roots, stems and leaves 1. Shoot system = leaves + stem 2. Root system 3. Meristem = cells that divide for life of plant, can give rise to all plant structures Nonvascular Plants Simple; most grow in moist places No vascular tissues Includes bryophytes (ex: mosses) and some algae
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Typical Vascular Plant Structure
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Leaves Stalk Roots
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Plants we eat: Is it a Stem, Leaf, Root, Flower, Fruit or Seed?
Fruit / Vegetable Part of Plant Apple Banana Carrot Celery Lettuce Onion Peas Sweet Potato Tomato
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Plants we eat: Is it a Stem, Leaf, Root, Flower, Fruit or Seed?
Fruit / Vegetable Part of Plant Apple Fruit Banana Carrot Celery Lettuce Onion Peas Sweet Potato Tomato
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Plants we eat: Is it a Stem, Leaf, Root, Flower, Fruit or Seed?
Fruit / Vegetable Part of Plant Apple Fruit Banana Carrot Root Celery Lettuce Onion Peas Sweet Potato Tomato
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Plants we eat: Is it a Stem, Leaf, Root, Flower, Fruit or Seed?
Fruit / Vegetable Part of Plant Apple Fruit Banana Carrot Root Celery Stem Lettuce Onion Peas Sweet Potato Tomato
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Plants we eat: Is it a Stem, Leaf, Root, Flower, Fruit or Seed?
Fruit / Vegetable Part of Plant Apple Fruit Banana Carrot Root Celery Stem Lettuce Leaf Onion Peas Sweet Potato Tomato
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Plants we eat: Is it a Stem, Leaf, Root, Flower, Fruit or Seed?
Fruit / Vegetable Part of Plant Apple Fruit Banana Carrot Root Celery Stem Lettuce Leaf Onion Peas Sweet Potato Tomato
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Plants we eat: Is it a Stem, Leaf, Root, Flower, Fruit or Seed?
Fruit / Vegetable Part of Plant Apple Fruit Banana Carrot Root Celery Stem Lettuce Leaf Onion Peas Seed Sweet Potato Tomato
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Plants we eat: Is it a Stem, Leaf, Root, Flower, Fruit or Seed?
Fruit / Vegetable Part of Plant Apple Fruit Banana Carrot Root Celery Stem Lettuce Leaf Onion Peas Seed Sweet Potato Tomato
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Plants we eat: Is it a Stem, Leaf, Root, Flower, Fruit or Seed?
Fruit / Vegetable Part of Plant Apple Fruit Banana Carrot Root Celery Stem Lettuce Leaf Onion Peas Seed Sweet Potato Tomato
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Vascular Plants: Stems
Function of stems: Support: hold leaves up to light Transport of water & food Phloem transports sugar PHLOEM = FOOD Xylem conducts water
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Meristems are growth points
Apical meristems are located at the top of roots and shoots Lateral meristems add thickness (width) to woody plants Meristem = Mitosis
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Vascular Plants: Roots
Roots can be different sizes: Fibrous and tap roots Storage roots: Ex.: beets, carrots, sweet potatoes and turnips Roots have different functions: Anchoring the plant, taking in water and minerals, and store food.
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Vascular Plants: Leaves
Leaves come in variety of shapes and sizes Leaves are arranged in different ways
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Vascular Plants: Leaves
Functions: Exposes surface to sunlight Major site of photosynthesis Conserves water Provides for gas exchange Stomata= opening in the leaf for gas exchange, water evaporation
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Transports water and sugar to stem and roots
Conserves water Photosynthesis Transports water and sugar to stem and roots Structures of the Leaf
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Three Types of Plant Tissues
Vascular Tissue (Xylem & phloem) Transport Support Ground Tissue Synthesis of Sugars Storage Dermal Tissue Protection
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Weds. 3/27
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Q.Q. 03/27
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Q.Q. 03/27
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Ticket Out from yesterday
15 mins
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PLANT TROPISM Plant’s ability to respond to their environment
Growth responses that result in curvature of plant organs towards or away from stimuli.
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PLANT TROPISM Gravitropism– response to gravity; roots have positive geotropism; stems have negative geotropism Video tschwartz
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PLANT TROPISM Phototropism– response to light (leaves) Video
Hydrotropism– response to water (roots) tschwartz
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PLANT TROPISM Thigmotropism– response to touch (venus flytrap) Video
tschwartz
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(on the back of yesterday’s notes!)
Complete Q.Q. 3/28 (on the back of yesterday’s notes!) REVIEW: Match the function with the correct plant organ A. protective covering that surrounds the seed B. anchor the plant in place and absorb water and other minerals from the soil. C. Reproductive structure; makes seeds D. makes the plant's food. E. carries water and food to the rest of the plant. F. Plant embryo roots
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(on the back of yesterday’s notes!)
Complete Q.Q. 3/28 (on the back of yesterday’s notes!) C. Match the function with the correct plant organ: A. A. protective covering that surrounds the seed B. anchor the plant in place and absorb water and other minerals from the soil. F. C. Reproductive structure; makes seeds D. D. makes the plant's food. E. carries water and food to the rest of the plant. E. F. Plant embryo roots B.
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Plant Reproduction
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Flowering Plant Reproduction
Pollen grains Ovule Flower Meiosis Mitosis Flowers are modified leaves, specialized for reproduction. Flower parts undergo meiosis to produce haploid cells. “half" pollen grain (sperm cell) ovule (contains egg cell)
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A Complete Flower Has Both Male and Female Parts
Pistil – FEMALE part of a flower that brings pollen to eggs that grow into seeds Stamen – MALE part of a flower that makes pollen (sperm) Pollen – tiny grains(MALE gametes) that make seeds when combined with a flower’s egg
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Encloses and Protects Bud
Male part Produces pollen Stamen Anther Attracts pollinator Filament Pistil Stigma Petal Style Sepal Ovary Encloses and Protects Bud Female part Produces egg
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The birds and the bees of plant reproduction!
Pollination- the movement of pollen from a stamen to a pistil (aka male part to female part!) Birds, bees, butterflies, or other insects may carry pollen from one flower to another flower or the same flower.
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How Fertilization Occurs
Fertilization – the combination of sperm from a pollen with an egg to form a seed (embryo). When a pollen grain reaches a pistil, it grows a thin tube to the ovary. Sperm from the pollen combines with an egg, and a seed forms.
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After fertilization, the ovary gets larger as seeds form inside it.
The enlarged ovary becomes the fruit. Corn, beans, and peas are seeds and apples, tomatoes, and cucumber are fruits! Plant Reproduction video How Seeds & Fruits Form
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Monday, 4/1- Plant Open Notes Quiz!
35 Questions
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Plant Reproduction with the Amoeba Sisters: https://youtu
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Friday- Plant dissection
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