Plant science test 1 study Guide

What is the difference between agronomy and horticulture?
Agronomy is large scale crop production- mechanized
Is agronomy or Horticulture mechanized?
What do horticulture and agronomy occur on? Which one is large scale and which one is small scale?
horticulture- small
agronomy- large
Explain differences in plants and animals and similarities
1.Plants have cell walls- Animals do not
2. plants are usually rooted in one place and do not move on their own
3. Plants can make their own food- animals can not
4. Plants can make oxygen and take in carbon dioxide given off by animals -animals give off carbon dioxide which plants need to make food and animals take in oxygen to breathe
5. Plants have either no or very little ability to sense- Animals have a much more developed sensory and nervous system
1. both undergo cellular respiration
2. mitosis and meiosis
3. both require water to survive and both have cells
4. both have vascular system and use energy
5. both reproduce
6. both grow and develop
How are humans dependent on plants?
plants for food- daily needs- oxygen- medicine
Why are humans dependent on plants? (for what exactly)
Food- daily needs- oxygen- medicine
What does Genus, Species, and Cultivar tell us?
Genus similar genetics
Species- slight differences (such as short or tall)
Cultivar- a cultivated variety of a plant that has been deliberately selected for specific desirable characteristics
Who came up with the idea of classifying plants into Genus, Species, Cultivar?
Carolus Linnaeus
What does Parthenocarpic mean?
When fruit develops from absence of pollination and fertilization
What common plant is like this? (Parthenocarpic)
bananas- seedless watermelons
What are the basic parts of the plants?
Cuticle- epidermis- stomata- stems- guard cells
Explain leaf arrangements and margins
alternating-back and forth up and down the stem
opposite- straight across from each other
whirled- going in a circle around stem all connecting at one point
basil rosette- p. 18
Margins- outside edge of leaflet
What is at every node?
a dormant growing point called a bud
Identify the difference in shape of leaves
Monocot smooth edges- dicot sharp jagged edges
Page 15
What is exocarp
outer layer of the fruit wall- forms skin of a peach or a grape
what is endocarp
hard inner layer of the pericarp- such as the pit of a peach
What is mesocarp
middle layer of pericarp, fleshy part of certain fruits (drawing on lab 3)
Be able to locate exocarp, endocarp, and mesocarp on a diagram.
Lab 3 diagram- exocarp most outer part- mesocarp middle part endocarp most inner part (pit)
What is a fibrous root?
roots that spread out everywhere in smaller roots instead of one main root- more anchorage and more surface area to get water
What is a tap root?
one main root that goes straight down with a few stragglers
Where are most of the plant roots found?
between first 24 inches of the top soil
What are the parts of the roots?
Root cap- acts as a helmet (protects growing point)
Root hair- where absorption occurs- water is picked up on the root hairs- 400x smaller than human hair
Meristem- where growth occurs right above the root cap
Root apical Meristem- Where new cell growth starts- right above the root cap
Region of elongation- vacuoles swell, enlarging new cells
Region of Maturation- cells become specialed
What is the difference between monoecious vs. dioecious?
Monoecious plants- 1 house both male and female flowers (5-1 ratio of males to one female for making fruit in cucumbers) one plant
Diocecious- 2 houses (2 plants) one male one female- they want to have sex- produce many or few offspring (examples: holly, Ginkgo, Spinach, Asparagus, persimmons)
Which has both male and female parts?monoecious vs. dioecious
How do Gymnosperms and Angiosperms differ?
Angiosperms: noticable flowers- protective structure- food crops
Gmnosperms: obscure flowers- little protection (making seed not enclosed)- few food crops- produce naked seed
How do Gymnosperms and Angiosperms reproduce?
Gymnosperm- they reproduce by dropping seeds out of their cones -- ferns and conifers
Angiosperms- flowering, they pollinate them self- asexual
What is the difference between Pollination and Fertilization?
Pollination- is a transfer of pollen from an anther to a stigma
Fertilization- is a combining of egg and sperm
What all does pollination include?
the transfer of pollen to a stigma
What all does fertilization include?
an egg and sperm combining
2 male parts and 3 female parts but only one female part has egg
What does poison ivy look like?
three leaves, compound leaf- goes through change of color- looses leaves in fall
How can you get poison Ivy?
have to touch it- unless you inhale smoke that has it- it will stay on foreign objects for 1 year
How severely can poison ivy harm you?
it can kill you
Describe the ways that plants receive water to receive nutrients. (water movements) give examples
xylem moves water up- phloem moves nutrients/food down
Salt allows water to move in one direction or the other
Transpirational pull- pull water to top of plant- tube gets smaller acts like a straw
Cohesion- where water molecules stick together
adhesion- where water sticks to something else
Pez example- when one water droplet is used the space that has been used is taken up by another water droplet like Pez
Lab: (Soilless Media) What is it used for?
to produce a growing media- it is used for growing plants indoor
Lab: (Asexual Propagation) Explain the most common methods of asexual propagation.
Not using seed - it is a cut from the plant and then you put the growing hormone on it
Lab: (Asexual Propagation) What are some pros and cons of asexual propagation?
Pro- small piece of a plant becomes an entire new plant- species could adapt to environment easier
Con- 2 parents have to be invoved
roots must be generated which does not usually happen (adventitious roots)
Lab: (Flower Dissection) Identify the male and female parts of a flower
(be able to identify them on a picture)
Lab: (Flower Dissection) What are the male parts and functions of a plant?
Male part stamen- pollen producing male organ (made up of anther and filament)
-anthers- pollen bearing part of stamen
-filaments- hair like stalk that anther sits on top of
Lab: (Seed Sowing) Explain the process of Germination
1. When a seed is exposed to the right conditions, water and oxygen are taken in through the seed coat.
2. embryo's cells start to enlarge
3. seed breaks open and a root emerges- followed by a shoot that contains stem and leaves
Lab: (Seed Sowing) What are the requirements for germination to take place?
Healthy seeds, Soil, planting depth, Moisture, Light, Warmth, Patience
Can flowers have all male parts, all female parts or a combination?
What are flowers with only male or only female parts called?
Imperfect (cucumbers, pumpkin, and melons)
Flowers with both male and female parts are called what?
perfect (roses, lilies, dandelion)
Frost season is around what time
October- about February or march
What is bolting?
Bolting is when a plant is mostly leaf based changes to mostly flower and seed based
Why are homegrown tomatoes better than store bought?
Store bought are picked before they are ripe
They are also treated with chemicals so they will become ripe on the trip to the store from the factory
If poison ivy does not actually poison you how does it infect people?
when the oil touches the skin many people develop an allergic reaction which causes a rash
Cuticles are located where?
on the outer part of the epidermis
How long does it take for banana plants to harvest?
9 months
What are female parts of plant and what are the functions?
Female part
-Pistil- reproduction
-stigma- sticky surface at top of pistil (provides a space for pollen to land)
-style- long stalk that stigma sits on top of
-ovary- has the seeds inside and turns them into fruit, holds the ovule's
-Ovule- part of ovary that becomes a seed
Other important parts of flowers/plants are?
Petals- attract pollinators and are usually reason we but flowers
Sepals- green petal like parts at the base of the flower (helps protect developing bud)
connects leaf to the stem
combination of cohesion and adhesion due to gravity
Solonacea family
most of the family members are poisonous- tomato and potatoes are in this family
any flowering plant- Reproduce by self pollination- cross pollination- and by wind, bees.....- has a ovary
ferns (produce spores on under of leaves)- conifers (produce needles and cones)
What is Promology?
study of fruit production
What is olericulture
study of vegetable production
What is arbroculture
study of trees
What is videculture
study of grapes
Horticulture in latin
garden cultivation- not to cultivate garden
A wind pollinated plant would have what type of seeds
A fruit is a...
ovary not ovule
Tomatoes originated where
in Peru
Cultivar is
written in English- rare type of plant that has been created and maintained through cultivation
Cambium does what
makes new xylem
Maple trees can pollinate what
Tomatoes (anything)
Many diff. species of plants bloom at the same time- 2 major mechanisms that a plant notices the right pollen to use is?
Lock: right shape
Key: chemical
Root examples: (types of food)
carrots, beats, sweet potato
Drupe examples: (types of food)
peaches, apricot
Berry: (types of food)
tomato, blueberry
Pome: (types of food)
apple, pear
What does a berry have?
Ovary- multiple seeds- Heperidium- pepos
What is hesperidium?
all citrus- all have leathery peel with oil
What is pepos?
Hard rine (cucumber, watermelon) hard rine made of exo and mesocarp
What are sinks?
The carbohydrate requiring locations
What is source to sink movement?
process of carbohydrate transfer
What are primary sinks? part of plant
roots- carbs can be stored there for future use