Seed dispersal is likely to have several benefits for plant species

Slides:



Advertisements
Similar presentations
Seed Dispersal Done by Nice Nature.
Advertisements

Seed Dispersal How does it happen?
Flowers,fruits and seeds
Sexual reproduction in plants
Competition in plants and animals. Possible relationships between 2 organisms A and B + = ‘gain’ - = ‘lose’ O = ‘no effect’ Organism A +_0 Organism B.
Plant Growth and Reproduction
What Adaptations Do Plants Have to Disperse Seeds?
Presentation From Lavender
Sexual reproduction in plants
What are the five ways that seeds can be spread from the parent plant? SEED DISPERSAL.
Why is seed dispersal important?
Seeds travel many ways Wind Animals Water Gliders Gliders include seeds with 2 lateral wings that resemble the wings of an airplane. They become airborne.
Seed dispersal How do plants reproduce?. Acorns fall from the tree and sprout If they are not destroyed by animals, white oak acorns can sprout rapidly.
Seed Dispersal The fruit often helps to disperse (spread) the seeds
How do Seeds Travel? November 28, 2011.
Understanding how seeds are dispersed by the wind
Characteristics for the different types of seed dispersal
Plant reproduction Sexual reproduction. Learning Intentions I can describe methods of sexual reproduction in plants I can describe the process of pollination,
Question one How do seeds disperse?.
What is seed dispersal ???  Seed dispersal is the movement of transport of seeds away from the parent plant  Plant have limited mobility and consequently.
By :Ong Zong Xiang, Ishita Doshi, Muhammad Ihsan, Daphne Lee Characteristics of the seeds and fruits for different types of dispersal.
 Do Now: Take out your notebook and study for 5 min  Quiz  Seed Dispersion Notes  Seed Dispersion Video.
Seed Dispersal and Germination
Learning Target: Seed Dispersal
Seeds on the Run: A Model of Seed Dispersal Sara Garnett, Michael Kuczynski, Anne Royer GK-12 workshop 12/5/12.
Chapter 40 Population Dynamics. You Must Know How density-dependent and density- independent factors can control population growth. The differences between.
The Problem of Fruit Plant Reproduction, Fruit and Seed Dispersal.
Dispersal Models General –Module B2 Spatial Modelling in Ecology, 5 ECTS Aims –Develop programming skills –Implement, apply and critically assess computer.
Plant Diversity The Evolution and Classification of Plants.
Seeds. Definition  A propagation organ formed in the sexual reproduction cycle of gymnosperms and angiosperms  Consists of:  Protective coat enclosing-
Reproduction and Seeds
10-4 POPULATION PATTERNS. 1. POPULATION PROPERTIES Size (often hard to measure) Density– amount of population per unit of area (population crowding) #
Seed Dispersal Lab. Dispersal by Water The coconut can float on water for long intervals due to an air-filled pericarp layer.
Plants Made by group Venus flytrap. How does wind help disperse seeds  Wind is one of the main agencies of seed dispersal  Some tall trees produce seeds.
Dispersal of seeds Is dispersal of seeds important? Yes  It continues the life cycle of the plant species so it won’t be extinct.  The more production.
Population density - number of individuals that live in a defined area.
Plant Reproduction adapted from
HOW ARE SEEDS DISPERSED? By:Poh Shu Li,Saloni,Haidah and Gao Jie.
Answer in your books in full sentences
22.3 Seed Dispersal and Germination TEKS 10B The student is expected to: 10B describe the interactions that occur among systems that perform the functions.
HELI PADS Group members : Michelle, Iviana, Dylan and Afiq.
+ SEED DISPERSAL Why is it important? Are there disadvantages?
Seed Structure and Germination. Seed Structure Spelling list: –Seed Coat (Testa) –Endosperm –Embryo –Cotyledon –Epicotyl /Hypocotyl –Radicle –Micropyle.
By: Enric, Shyam, Jane, Yijia, Iad..  Dispersal is important because if the seeds are not dispersed, many germinating seedlings will grow very close.
Structures and Functions of Flowering Plants. Functions of Structures of Flowering Plants Defense Thorns –Sharp outgrowths from the stems of some plants.
Mrs. Nell 6th Grade General Science Class
Seed Dispersal Lab.
Why is it not a good idea for all seeds to grow directly under the parent plant?
1 Seed Dispersal Unit 2 Topic 3 Science 7 Sunday, July 10, 2016.
By June, Andrea, Ivan, Samuel. Animal: can be transported on the outside of the animal or via ingestion by animal. Gravity: causes heavier fruits to fall.
The Evolution and Classification of Plants
What does a seed need to germinate?
WELCOME TO MS. Graciano’s class!
#57 Seed Dispersal How does it happen?
Plant Adaptations.
Learning Target: Seed Dispersal
The Classification of Plants
Plant adaptation.
Parts of a Plant Leaves Roots Stem Flower.
Traveling Seeds.
Natural Sciences Grade 7
The Evolution and Classification of Plants
Population density - number of individuals that live in a defined area.
The Evolution and Classification of Plants
#57 Seed Dispersal How does it happen?
Chapter 40 Population Dynamics.
Seed Dispersal The process of seeds spreading out from their starting place (parent plant) Distance from the parent plant is required so plants do not.
How do plants reproduce?
#57 Seed Dispersal How does it happen?
Presentation transcript:

Characteristics of the seeds and fruits for different types of dispersal Seed dispersal is likely to have several benefits for plant species. First, seed survival is often higher away from the parent plant. This higher survival may result from the actions of density-dependent seed and seedling predators, which often target the high concentrations of seeds beneath adults. Competition with adult plants may also be lower when seeds are transported away from their parent.

Wind dispersal is one of the more primitive means of dispersal Wind dispersal is one of the more primitive means of dispersal. Wind dispersal can take on one of two primary forms seeds can float on the breeze or alternatively, they can flutter to the ground..

The classic examples of these dispersal mechanisms include dandelions, which have a feathery pappus attached to their seeds and can be dispersed long distances, and maples, which have winged seeds and flutter to the ground. An important constraint on wind dispersal is the need for abundant seed production to maximise the likelihood of a seed landing in a site suitable for germination.