Sunflower Germination

Slides:

Advertisements

Similar presentations

Plant Responses to Internal and External Signals

Advertisements

Sexual Reproduction in Plants Involves production of haploid gametes.

Lesson 5: Plant responses and growth

Plant Responses 6.L.2.2 Explain how plants respond to external stimuli (including dormancy and forms of tropism) to enhance.

PLANT RESPONSE. Tropisms Plant growth toward or away from a stimulus Gravitropism gravity is “+” in roots and “-” in shoots – Plastids containing starch.

The Environment and Plant Responses

Tropism – a plant’s growth response toward or away from a stimulus. Positive tropism – when a plant grows toward the stimulus Negative tropism – when a.

Do Now 5.25: Survivorship Curves Find this graph at the very end of the exam review packet. Attempt to answer the questions that follow it.

(Or is it physiological)

How do plants know when to flower?

Growth and development in plants

Plant Responses C10L2 Plant Growth Plants respond to their environment by the way they grow or do not grow.

Plant behaviour.

Growth Responses and Regulation of Growth.  Growth- the increase in size of a plant  Development- the gradual changes over the life of the plant  Both.

Asexual Reproduction in Plants Produces offspring genetically identical to parent Also known as vegetative reproduction.

Plant Transport Water Transport – 1. Enters root by osmosis – 2. Passes through cortex (parenchyma) tissue by osmosis – 3. Passes through endodermis One.

THE TEMPEST Your Subtitle Goes Here Unit 4 – Lesson 3 Notes Plant Responses.

Plant Responses and Growth EQ: How do plants respond to stimuli and hormones?

Tropic responses Directional movements by growth in response to a directional stimulus.

Photoperiodism, Gravitropism, and Thigmotropism AP Biology Unit 5.

Aim: How do plants respond to changes in the environment?

PLANT RESPONSES TO EXTERNAL SIGNALS Ch 39. A potato left growing in darkness produces shoots that look unhealthy, and it lacks elongated roots After exposure.

Lecture #17 Date _______ n Chapter 39 ~ Plant Responses to Internal and External Signals.

Photoperiodisms Photo = light Period = time. Photoperiodism A physical response to photosynthesis, the length of day verses the length of night Plants.

WEDNESDAY 2/10/16 Learning Goal: Identify the stimuli that produce plant responses. Warm up: Finish labeling flower parts Homework: Finish packet pages.

Lecture #17 Date _______ n Chapter 39 ~ Plant Responses to Internal and External Signals.

Plant Reproduction and Responses I.Plant responses A. Phototropism B. Gravitropism C. Thigmotropism II.Photoperiodism A. Short day plants B. Long day.

Plant Processes. Gas Exchange in Plants  What do plants need to survive?  Water  CO 2  What do they absorb through their roots?  Water  Minerals.

Plant Responses. Tropism A plant’s growth response toward or away from a stimulus. Positive if it grows TOWARDS the stimulus. Negative if it grows AWAY.

Plant Responses to Stimuli

Tropism 6 th Grade Science. Have you ever wondered how seedlings “know” which way to grow? The plant must send its roots down into the soil for minerals.

PLANT RESPONSES TO STIMULI

Plants 8.5 Plant Growth and Tropisms. POINT > Describe 3 types of tropisms POINT > Identify 2 important plant hormones POINT > Define dormancy POINT >

Plant Respond To Their Environment How many of you have ever been alone in a room watching a movie and the phone rings and you have jumped? You responded.

How do plants respond to their environment? Chapter 1 Lesson 4.

PLANT RESPONSES.

How plants move and communicate

Plant Response to Stimuli

Plant Responses.

Plant Responses to Internal & External Signals

$16.07 AP Bio “If I were an enzyme, I would be DNA helicase so I could unzip your genes” “If I were an enzyme, I would be DNA helicase… it’s an AP Bio.

Plant Responses Tropisms.

Examination of a typical dicotyledon seed

INTERACTION FUNCTION IN PLANTS

Plant Responses Chapter 31.

Cuticle Vascular Tissue Zygote Nonvascular Plant Vascular Plant

Plant Responses to Internal & External Signals

What is a hormone? Hormones- chemical messengers

Control systems in plants

Plant Control Systems It’s a Hormonal Thing!.

Plant Responses to Internal & External Signals

Warm Up # Why is it sometimes hard to see a plant’s response to a stimulus?

Plant Responses and Hormones

Action spectrum of photosynthesis

Chapter Plant Responses.

Chapter 11 Section 2.

Chapter 39 ~ Plant Responses to Internal and External Signals

Science 7—Chapter 8 Plant Processes an Reproduction

Tropism Directional growth of a plant, or part of a plant, in response to an external stimulus such as gravity or light.

Structure and Function of Plants

Plant responses to Internal and External Stimuli

SEASONS 12 Hours of Daylight & Darkness (everywhere in the world) IN THE NORTHERN HEMISPHERE More Direct Light, Higher Average Temperatures Longer.

AP Biology Chapter 39 Plant Responses to Internal and External Signals.

The process in which an embryo sporophyte resumes growth after a period of dormancy is ________. germination budding phototropism senescence

How Color, Duration, and Intensity of Light Effect Plant Growth?

Plant Responses to the Environment

Plant Transport Water Transport 1. Enters root by osmosis

Notes: Plant Response and Hormones

Tropism Directional growth of a plant, or part of a plant, in response to an external stimulus such as touch, gravity or light.

Presentation transcript:

Sunflower Germination

Root Growth

Phototropism

Gravitropism

Sensitive to Touch

Long Day Plants that requires a longer day (and shorter night). These bloom only when they receive more than 12 hours of light. Many summer blooming flowers are long day plants.

Short Day A plant that requires a long period of darkness is called a “short day” plant. Short-day plants form flowers only when the day length is less than about 12 hours. If they’re exposed to more than 12 hours of light per day, bloom formation does not occur.