Lesson 3A – Flowers, Fruits and Seeds

Slides:



Advertisements
Similar presentations
the reproductive structures of plants
Advertisements

the reproductive structures of plants
Flower The organ responsible for sexual reproduction in plants
Plant Reproduction & Response to the Environment
The World of Plants (B) Growing Plants.
Anatomy of a Flower Plant Sex.
Topic: Reproduction Aim: Describe the structure of a flower and how it uses sexual reproduction. Do Now: 1. Take out the Seeds ISN. 2. Sit next to your.
Plant Reproduction Plant and Soil Science Topic 2014 By: Leyna Dussel.
6.L.1.1 – Structures of Flowering Plants & Flower Fertilization
Pollination, fertilisation and germination Life Cycle of a Flowering Plant.
REPRODUCTION AND STRUCTURE NOTES
Parts of a Flower. Petals The petals on a flower can come in many different shapes and sizes. They are brightly colored to attract bugs and bees to the.
Flowers Their main jobs for the plant are: Develop into seeds & fruits
TWO PHASES IN THE LIFE CYCLE OF A PLANT 1. VEGETATIVE STAGE - includes the growth of roots, stem and leaves. 2. REPRODUCTIVE STAGE -the development of.
Reproduction in Angiosperms
 Does not involve sex cells  One organism is producing offspring  Most plants have this type of reproduction  Used by plants who do not produce.
Plant Adaptations for Success on Land Vascular tissue Evolution of the seed that provides food and protection Many methods of seed dispersal Evolution.
Plants: Angiosperms.
Introduction to Plant Reproduction
Plant Life!!!  By : Emily Bass. Photosynthesis Photosynthesis- is the process of converting light energy to chemical energy and storing it in the bonds.
NGSS Unit 7: Growth, Development, and Reproduction of Organisms
Chapter 15 Plant Reproduction
PLANT REPRODUCTION. Male Plant Reproductive System  Stamen  Contains the anther and the filament.
Seed Reproduction Chapter 9 Notes. Seed Reproduction Plants need to reproduce to carry on their species. Plants reproduce due to the movement of pollen.
Plants Structure and Function Sexual Reproduction.
Discovering Plants.
Plant Structures. What are the functions of Roots, Stems and Leaves? Roots – Anchor plants in the ground, absorb water and minerals from the soil, and.
Chapter 3: Plant Growth and Reproduction 5 th grade Science Teacher Imarlys Cajigas Big Idea: Plants have a variety of structures to help them carry out.
Reproduction In Plants. Pollination What are males gametes in plants? Where are they? Pollen grains on anthers What are the females gametes in plants?
Parts of a Flower.
1 Plant Reproduction Flower Parts Pollination Fertilization Seed Dispersal Germination.
FLOWER PARTS. STAMEN Male part of the flower Made up of two parts –Anther –Filament.
Flowers Their main job for the plant is: Develop into seeds & fruits = Sexual reproduction Reproduce the plant.
Activity #2: Plant Reproduction Objective: 1. Plant anatomy 2. Methods of plant reproduction.
Chapter 15 Plant Reproduction
Reproduction in Seed Plants. Life Cycle in Flowering Plants Structure of Flowers – Reproductive organs – Petals  Vary in color; attract pollinators –
Parts and Functions of a Flower
Structural Adaptations for Reproduction PARTS OF A FLOWER 4/6/16.
Plants Review Subtitle. Flower Anatomy Parts of the Flower Sepals –Covers flower bud. –Protects the stamens and pistils when flower is in bud stage.
Parts of a Flower.
L/O: To draw and design the life cycle of a plant
Parts and Functions of a Flower
Parts of a Flower.
Parts of a Flower.
Parts and Functions of a Flower
Plant Reproduction.
Ch3: Lesson 2 How do plants reproduce?
Sexual Reproduction in Flowers
Plant Reproduction.
Reproduction in Flowering Plants
Sexual Reproduction of the Flowering Plant Adapted from Biology Resource CD, 2009 Dept. of Education Orla Bergin.
Plant Reproduction.
The Parts of a Flower Most flowers have four parts: sepals, petals,
Chapter 3:Lesson 2: Reproduction in Plants:.
Flower Anatomy 7th grade Science Start Here.
Plant Reproduction.
Reproduction in Flowering Plants
Reproduction in Flowers
Reproduction in Flowering Plants
Sexual or Asexual Reproduction?
The Flower - Structure 1. Stamen – male organ of the plant
Review of plant reproduction
EVA MARÍA MORENO BERDÓN 5ºA
Parts of a Flower.
Reproduction in Flowering Plants
Sexual Reproduction in Flowers
Green Plants.
12/19/12 – plant Unit.
Green Plants.
Parts of a flower.
Presentation transcript:

Lesson 3A – Flowers, Fruits and Seeds INTRODUCTION Science 3001 Science II: Earth & Life Sciences I Mr. Kishore Lal Living Things Lesson 3A – Flowers, Fruits and Seeds

Flowers, Fruits and Seeds Reproduction in plants Life cannot exist without plants. There are three methods of reproduction in plants: From seeds. From spores. Vegetative propagation (from body parts)

Flowers, Fruits and Seeds Parts of the Flower Flowers are important in producing seeds. While flowers can be different, there are some parts that are found in many flowers. Some flowers can be small and dull looking like tiny leaves e.g.plum, or pommecythe, while others can be quite conspicuous as single flower or bunches of flowers.

Flowers, Fruits and Seeds Parts of the Flower. Stamen - the male part. Anther - produces male gametes (pollen). Filament - supports anther. Pistil - the female part. Stigma - sticky portion at the top of the style where pollen grains usually land. Style - the narrow elongated part of the pistil between the ovary and the stigma. The pollen tube grows into the style to reach the ovule for fertilization. Ovary - contains ovules After fertilization, the ovary may become the fruit. Ovule - the female gamete (egg)which become seeds.

Flowers, Fruits and Seeds Parts of the Flower. Petal (corolla) - often conspicuously colored and may attract insects. Pedicel - the stalk of a flower. Sepal (calyx) - external covering of flower bud. (often green and leaf-like). Stalk - supports the flower Receptacle - the part of a flower stalk where the other parts of the flower are attached. Meiosis is the process of cell division that produces gametes (sex cells) in the ovary and anther

Flowers, Fruits and Seeds Seed and Fruit Formation. When the pollen lands on the sticky stigma it begins to grow a pollen tube towards the ovary. This allows its nucleus to fertilize a single ovule. The outer cell layers of ovule form seed coat. Seed coat forms slows down metabolic activities and protects young plant when it’s the most vulnerable. Seed has stored food for germination to postpone development until favorable conditions. The fruit develops from the ovary. Germination can’t start until water/oxygen reaches embryo and other appropriate conditions (e.g. heat, available nutrients, chemicals, pass through animal intestines, etc).

Flowers, Fruits and Seeds Main Parts of a Seed Testa – (Seed Coat) i.e. the protective covering which protects the baby plant inside the seed. It has a tiny hole through which the seed gets water. Cotyledons (Seed Leaves) - They contain food for a growing baby plant. Embryo – the parts that will become the shoot and root Plumule – this becomes the shoot Radicle – this becomes the root

Flowers, Fruits and Seeds Germination is the development of a seed into a seedling (baby plant). The seed needs oxygen, water and warmth (from sunlight) for germination. Germination - From the emergence of the plumule and radicle to the first true leaves.

Flowers, Fruits and Seeds Stages of growth Seed absorbs water from the soil. Seed coat becomes soft and it breaks up and the baby root (radicle) emerges followed by the baby shoot (plumule). Root grows down into the soil. Baby shoot develops and grows towards the sunlight. Tiny leaves appear on the shoot. As the leaves grow, they start making their own food (photosynthesis). The new plant produces flowers which grow into fruits. Fruits contain seeds. Given suitable condition of air, water and warmth, these seeds germinate and grow into new plants. In this way the cycle of reproduction in plants continues.

Flowers, Fruits and Seeds Dispersal of seeds Dispersal helps the seeds to reach the suitable place where they get enough air, water and warmth needed for their germination. It prevents the competition of seeds growing near the mother plant.

Flowers, Fruits and Seeds Dispersal of seeds Seeds need to be scattered away from the mother plant. Dispersal of seeds is accomplished by agents like animals, birds, human beings air Water explosion.

END