New User Special Price Expires in

Let's log you in.

Sign in with Facebook


Don't have a StudySoup account? Create one here!


Create a StudySoup account

Be part of our community, it's free to join!

Sign up with Facebook


Create your account
By creating an account you agree to StudySoup's terms and conditions and privacy policy

Already have a StudySoup account? Login here

Plants and People PBIO Week 3 Notes

by: Abbey Marshall

Plants and People PBIO Week 3 Notes PBIO 1030

Marketplace > Ohio University > PBIO 1030 > Plants and People PBIO Week 3 Notes
Abbey Marshall
GPA 4.0

Preview These Notes for FREE

Get a free preview of these Notes, just enter your email below.

Unlock Preview
Unlock Preview

Preview these materials now for free

Why put in your email? Get access to more of this material and other relevant free materials for your school

View Preview

About this Document

Clicker quizzes and exams
Plants and People
Dr. Thompson
Class Notes
plants, Biology, Ethnobotany, roots, Stems, flowers, leaves
25 ?




Popular in Plants and People

Popular in Department

This 5 page Class Notes was uploaded by Abbey Marshall on Thursday September 15, 2016. The Class Notes belongs to PBIO 1030 at Ohio University taught by Dr. Thompson in Fall 2016. Since its upload, it has received 10 views.


Reviews for Plants and People PBIO Week 3 Notes


Report this Material


What is Karma?


Karma is the currency of StudySoup.

You can buy or earn more Karma at anytime and redeem it for class notes, study guides, flashcards, and more!

Date Created: 09/15/16
Week 3 Notes Wednesday, September 7, 2016 (Reading: Plants in Our World, Chap. 1) 1. Describe the contribution of roots to plant growth and health (p. 11).  Absorb water and nutrients from the soil  Root systems have been genetically engineered to produce a firefly enzyme, which makes it glow in order for scientists to study them in the dark underground  Sometimes modified to store starch o Carrots, beets, turnips, beetroots, sweet potatoes are all roots (store starch)  Orchids have aerial roots, grow on other plants (epiphytic) and may absorb moisture from the air 2. List the components of the shoot system and describe the contribution of each to plant growth, health and reproduction (you do not need to know all the technical terms unless I specifically mention them). 
  Stems: framework that bears branches or leaves so that photosynthetic surfaces are maximally exposed to the sun o Support structure (woody or herbaceous) o Conduction of water and nutrients from roots o Conduction of photosynthates (sugar products) around the plant o Examples of stems we eat:  Celery  Asparagus (stem) o Stems have:  Nodes  Internodes  Leaves: by exposing flat surfaces to the sun, a plant maximizes both the surface area exposed to sunlight and the rate of gaseous exchange necessary for photosynthesis and respiration o Gas exchange through stomata for:  Photosynthesis  Respiration 3. Describe some of the modifications of leaves and name an example of a useful product from a leaf modification. 
  In poinsettias, leaves that are bright red in color resemble flower petals to attract pollinating insects to the inconspicuous flowers they surround  Some leaves bear prickles when animals are a threat  Leaves can be succulent and store water  Aquatic plants often have specialized leaves  Leaves can have modified tendrils to help hold a climbing plant  In some species… o Water storage o Herbivory deterrence o Attachments o Secondary compounds (ex. aloe vera) o Attract pollinators or food  Examples of modified leaves: o Onions (modified fleshy leaves) 4. Describe some of the modifications of stems. Name an example of useful product from each of these: bulbs, tubers and rhizomes.  In some species… o Photosynthesis o Water storage o Herbivory deterrence o Asexual reproduction o Climbing  Stolon: above ground roots that run across parent and daughter plant  Bulbs: short stem with fleshy leaves, storage organs during dormancy  Tubers: underground storage stems o Potatoes  Rhizomes: swollen underground stems that grow horizontally o Ginger Symbiotic relationships:  Bacteria form nodules and convert nitrogen into something the plant can use  Fungi fix phosphorus for plants  Close by plants will share the nitrogen and phosphorus  Plants fix carbon Friday, September 9, 2016 (Reading: Photosynthesis, Kim et al. 2011) 1. Distinguish between gymnosperms and angiosperms (p. 2). 
  Angiosperms, also called flowering plants, have seeds that are enclosed within an ovary (usually a fruit). o Seed develops from an ovule inside an ovary  Gymnosperms have no flowers or fruits, and have unenclosed or “naked” seeds on the surface of scales or leaves. o Cycad: one of the oldest gymnosperm, produces cones 2. Distinguish between perfect and imperfect flowers; draw a picture of a perfect flower, labeling the sepals, petals, pistils and stamens. 
  Perfect: flower with both sexes  Imperfect: only one functional sex  Parts of flower o Pistil: female organ  Ovary: bears fruit  Ovules: located in ovary, gives seeds o Stamen: male organ with pollen  Filament  Anthers o Sepal: protective layer 3. Distinguish between monoecious and dioecious plants.  Monoecious: a plant that produces separate male and female flowers on the same plant  Dioecious: species that have individual plants that bear only male or female flowers, indicating that there are two kinds of plants 4. Describe the purpose of fruits and seeds for a plant.  Fruits: protecting the seeds and dispersing them to areas where they can germinate  Seeds: contain an embryo, variable amounts of stored foods, and a protective coat derived from maternal tissue 5. Describe the features of seeds that make them useful to humans. 
  Grasses: important group of monocotyledons for humans, food for the developing embryo is stored as a copious mass of starchy endosperm  Good food source of humans: o Highly caloric because they contain comparatively large amounts of fats or starches that provide energy to the germinating embryo o Some, such as beans and peanuts, also contain significant amounts of protein o Seeds are often produced in large quantities o Seeds of many species can be harvested readily  Flowers: o aesthetic value o Tea/food o Honey (nectar taken from flowers, bees make honey) o Perfumes/scents o Medicinal values o Personal and hair care


Buy Material

Are you sure you want to buy this material for

25 Karma

Buy Material

BOOM! Enjoy Your Free Notes!

We've added these Notes to your profile, click here to view them now.


You're already Subscribed!

Looks like you've already subscribed to StudySoup, you won't need to purchase another subscription to get this material. To access this material simply click 'View Full Document'

Why people love StudySoup

Steve Martinelli UC Los Angeles

"There's no way I would have passed my Organic Chemistry class this semester without the notes and study guides I got from StudySoup."

Amaris Trozzo George Washington University

"I made $350 in just two days after posting my first study guide."

Steve Martinelli UC Los Angeles

"There's no way I would have passed my Organic Chemistry class this semester without the notes and study guides I got from StudySoup."


"Their 'Elite Notetakers' are making over $1,200/month in sales by creating high quality content that helps their classmates in a time of need."

Become an Elite Notetaker and start selling your notes online!

Refund Policy


All subscriptions to StudySoup are paid in full at the time of subscribing. To change your credit card information or to cancel your subscription, go to "Edit Settings". All credit card information will be available there. If you should decide to cancel your subscription, it will continue to be valid until the next payment period, as all payments for the current period were made in advance. For special circumstances, please email


StudySoup has more than 1 million course-specific study resources to help students study smarter. If you’re having trouble finding what you’re looking for, our customer support team can help you find what you need! Feel free to contact them here:

Recurring Subscriptions: If you have canceled your recurring subscription on the day of renewal and have not downloaded any documents, you may request a refund by submitting an email to

Satisfaction Guarantee: If you’re not satisfied with your subscription, you can contact us for further help. Contact must be made within 3 business days of your subscription purchase and your refund request will be subject for review.

Please Note: Refunds can never be provided more than 30 days after the initial purchase date regardless of your activity on the site.