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

Bio 152 Exam 2 Study Guide

by: Alena Comley

Bio 152 Exam 2 Study Guide Bio 152

Marketplace > University of Kentucky > Biology > Bio 152 > Bio 152 Exam 2 Study Guide
Alena Comley
GPA 3.5

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

This covers all of plant nutrition, plant growth, water potentials, water and sugar transportation, Nutrients needed for plant growth, types of ion exclusion, and light absorption.
Introductory Biology II
Dr. O'Quin
Study Guide
plant nutrition, plant growth, water potentials
50 ?




Popular in Introductory Biology II

Popular in Biology

This 3 page Study Guide was uploaded by Alena Comley on Thursday March 3, 2016. The Study Guide belongs to Bio 152 at University of Kentucky taught by Dr. O'Quin in Spring 2016. Since its upload, it has received 35 views. For similar materials see Introductory Biology II in Biology at University of Kentucky.


Reviews for Bio 152 Exam 2 Study Guide


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: 03/03/16
Bio 152 Exam 2 Study Guide  Root system-anchors the plant and takes in water and nutrients from the soil  Shoot system- Harvests light and carbon dioxide from the atmosphere to produce sugars  Dermal Tissue-barrier between the organism and the environment; helps protect the shoots and helps in water and nutrient absorption in the roots o Made up of epidermal cells-secrete waxy cuticle; form the stomata for gas exchange; form trichomes which help in protection and reducing water loss  Ground Tissue-produces and stores valuable molecules, such as pigments, hormones, and toxins for defense o Parenchyma-most abundant and versatile; “workhorse cells”, pretty much do everything in the plant-alive at maturity o Collenchyma-provides structural support to growing regions of shoots- alive at maturity o Sclerenchyma- Sclereids and fibers: Support stem and other structures after growth has ceased; cells dead at maturity  Vascular Tissue- To transport water from the roots to the shoots; to transport sugar either from roots to shoots or shoots to shoots, depending on the location of sources and sinks o Xylem- Tracheids and vessel elements; have perforations that help transport water; dead at maturity o Phloem- Companion cells and sieve-tube elements; sieve tube elements transport the phloem sap; companion cells provide support to the sieve tube elements  Primary growth increases the plant length-involves the apical meristem  Secondary growth increases the plant width- involves the cambium  Solute potential is negative-means there is more solute present compared to pure water  Pressure potential is both positive and negative-positive value indicates a pushing on the water; a negative value indicates pulling on the water (tension) Hypothesis for water transport  Root pressure- solutes are still pumped into the roots at night, which causes water to flow into the plant and eventually push up the plant and out of the leaves; in low lying plants only-like grasses  Capillary Action- based on the tendency of water to move up a small tube; adhesion helps bind water molecules to the side of the tube; cohesion links water molecules to each other, transmitting adhesion and tension forces; tension reduces the surface area at the air water interface, which helps pull up against gravity; only pulls water up about a meter  Cohesion-Tension – water is pulled to the tops of trees along a water-potential gradient, via forces generated by transpiration at leaf surfaces; tension created at the leaves menisci is transmitted to the rest of the plant by cohesion- can pull water to the tops of very tall trees Sugar locations  Source- Sugar is transported into the phloem, which causes a low solute potential. As a result, water flows passively from the xylem into the phloem. The increase in water causes an increase of turgor pressure.  Sink- Sugar is removed from the phloem, which moves the solute potential closer to 0. This causes the water to flow passively back into the xylem. The water leaving the phloem reduces the turgor pressure.  Essential nutrient- plant cannot complete its life cycle without the nutrient; example- Carbon, Hydrogen, Oxygen  Macronutrient-availability limits plant growth; ex-Nitrogen, phosphorus  Micronutrient-required in small quantities, act as cofactors for specific enzymes; ex-copper, boron, iron  Cations use an antiporter to cross the membrane  Anions use a symporter to cross the membrane Mycorrhizae-symbiotic relationship with plant roots. Plant provides organisms with sugars and photosynthetic products and organisms provide plan roots with nitrogen and phosphate Rhibozome- symbiotic relationship. Bacteria provide organism with ammonia and the plant provide the bacteria carbohydrates and protection Type of Ion Method of Brief Description Exclusion Exclusion Passive Blocked entry to the epidermal and cortex cells lack symplast the requisite membrane transporters Casparian Strip endoderm cells act as a selective filter and prevent unnecessary ions from reaching the xylem Active Metallothioniens bind to metal ions and prevent them from acting as a poison Tonoplast exclusion Transport proteins in the tonoplast will actively remove substances from the cytosol and store them in the vacuole Response Receptor Hormone Mechanism for plant Involved Involved response Phototropism to Auxin The asymmetric distribution blue light of auxin causes cells on the shaded side to elongate more than cells on the illuminated side Germination- Phytochrome Red/Far-Red light Stem Elongation- Phytochrome Red light deficiency causes Red/Far-Red Light plants to grow higher in an effort to reach sunlight Flowering- Phytochrome Florigen Interrupting the night period Red/Far Red with red light flashes Light changed flowering patterns Gravitropism Auxin Cells in the lower portion of the root elongate more slowly compared to cells in the upper portion, resulting in bending.


Buy Material

Are you sure you want to buy this material for

50 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

Jim McGreen Ohio University

"Knowing I can count on the Elite Notetaker in my class allows me to focus on what the professor is saying instead of just scribbling notes the whole time and falling behind."

Amaris Trozzo George Washington University

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

Jim McGreen Ohio University

"Knowing I can count on the Elite Notetaker in my class allows me to focus on what the professor is saying instead of just scribbling notes the whole time and falling behind."


"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.