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109 Cards in this Set

  • Front
  • Back
These plants have tissue organized in such a way as to conduct food and water throughout their structure.
Vascular / Tracheophytes
These plants lack special tissue for conducting water or food. They produce no seeds or flowers and are generally only a few centimeters in height.
Non Vascluar / byrophytes
Plants that produce flowers as reproductive organs
Angiosperms
Plants that produce seeds without flowers
Gymnosperms
Plants that survive only through a single growing season
annuals
Plants that have a life span of 2 growing season:
biennial
Plants that continue to grow year after year:
perennial
The ______ system of angiosperms includes the stem, leaves, flowers, and fruit.
shoot
The signature structure of an angiosperm is the _______.
flower
Before a flower blooms, it is enclosed within the _______.
sepals
Small, green, leaf-like structures which pull back to reveal flower petals:
sepals
The main function of this plant part is to attract insects and birds, which may be neccessary to the process of pollination.
flowers
The short branch of the stem, which supports the flower, is known as the:
pedicel
The _______ is the female structure of a flower that includes the stigma, style, ovary, and ovules.
pistil
The sticky surface at the top of a pistil which traps pollen grains:
stigma
The _____ is a slender, vase-like structure that encloses the ovary of a plant.
style
The hollow, bulb-shaped structure in the lower interior of the pistil, which will ripen and become fruit:
ovary
The small round cases located in the ovary that contain one or more egg cells are known as ______ .
ovules
If the egg is fertilized, the _____ will become a seed.
ovule
The male structure of a flower is the ________.
stamen
The _____ sits atop the long, hollow filament.
anther
This has four lobes and contains cells that become pollen.
anther
______ ______ from a compatible species are conveyed by wind, birds, or insects, and stick to the stigma.
Pollen grains
The ______ produces chemicals which stimulate the pollen to burrow into the style, forming a hollow pollen tube.
stigma
A pollen tube is produced by the tube _____, which as developed from a portion of the pollen grain.
nucleus
When the _____ ______ reach the ovule, one will join with an egg cell, fertilizing it to become a _______.
sperm nuclei; zygote
The ______ will feed the growing embryo.
endosperm
The shoot apex is composed of _______ tissue.
meristem
This type of tissue consists of undifferentiated cells capable of quick growth and specialization.
meristem
The terminal bud is:
the beginning of a new set of leaves.
The spot where the previous year's terminal bud was is then called a _______ ____ ____.
terminal bud scar.
______ is a matured ovary, which contains the seeds (mature fertilized ovules).
Fruit
Fruit provides the means to both _______ and ______ seeds.
protect and disperse
Simple Fruits:
are developed from a single ripened ovary
Apple, corn, olive, acorn and cucumber are _____ fruits.
simple
Fruits that are developed from many seperate ovaries are known as:
compound fruits
A _______ fruit is a fruit in which many ovaries of a single flower fuse together.
aggregate
A _____ fruit is a fruit which forms from the fusing of several ovaries or seperate flowers during ripening.
multiple
When a seed is exposed to proper ______ , ______ , and _______ it germinates.
moisture, temperature, and oxygen.
Stored food in a seed is found in the ___________.
cotyledon
Plants with two cotyledons in each seed are known as:
dicotyledons (dicots)
Plants with one cotyledon in a seed are known as:
monocotyledons (monocots)
Oaks, flowers, and vegetables are: dicots/monocots?
dicots
Grasses, lillies, palm trees are: dicots/monocots?
monocots
leaves that have branched or networked veins are: dicots/monocots?
dicots
The two varieties of vascular tissue are:
xylem and phloem
_____ tissue is composed of long tubular cells which transport water up from the ground to the branches and the leaves of a plant.
Xylem
____ tissue is made of stacked cells connected by sieve plates; and transports food made in the leaves (by photosynthesis) to the rest of the plant.
Phloem
The _____ is the primary site of photosynthesis in most plants.
leaf
The small stem like extension from a leaf to a branch, which houses vascular tissue:
petiole
This covers most of the leaf's surfaces and maintains the leaf's moisture balance:
cuticle
The ______ is one cell thick and secretes the waxy cuticle and protects the inner tissue of a leaf.
epidermis
The _____ layer contains vertically alligned cells with numerous chloroplasts, which maximizes the potential for exposure of the chloroplasts to needed sunlight.
palisade
Most photosynthesis occurs in the ______ layer of the mesophyll.
palisade
The ______ ________ transport the sugars produced by photosynthesis to the rest of the plant.
vascular bundles (of xylem and phloem)
The _______ _______ make up the veins in a leaf
vascular bundles
This layer of a leaf is a lyer of parenchyma cells seperated by large air spaces, which allow for the exchange of gases (carbon dioxide and oxygen) for photosynthesis.
spongy layer
On the underside of leaves, there are openings ringed by ______ _____.
guard cells
The openings on the underside of leaves are called:
stomata (or stomates).
What is the function of the stomata?
to allow moisture and gases (carbon dioxide and oxygen) to pass in and out of the leaf, thus facilitating photosynthesis.
_______ roots extend downward; while _______ roots develop secondarily and extend horizontally, parallel with the ground surface.
primary; lateral
Why are roots structured to provide a large surface area?
absorbtion
The network of the root system provides what for the plant?
anchoring
What are the four major structural regions of roots?
root cap; meristematic region, elongation region, maturation region
What is the function of the root cap?
The root cap protects the tip of the root as it pushes through soil.
The ________ region of the root is just above the root cap, and constists of differentiated cells which carry on mitosis, producing cells that grow to form the ____________ region.
meristematic; elongation
In the ________ region of the root structural region, cells differentiate, large vacuoles are formed, and cells grow.
elongation
As cells differentiate into various root tissues, they become part of the ________ region of the root structural system.
maturation
The ______ _______ are extensions of the cells in the maturation region, which reach between soil particles and retrieve water and minerals.
root hairs
The _______ is one cell layer thick and serves to protect the internal root tissue and absorb nutrients and water.
epidermis
The ______, located inside the epidermis, is a ring made of large parenchyma cells.
cortex
Inside the cortex is a ring of ________, a single layer of cells, which are tightly connected so no substances can pass between cells, allowing the __________ to act as a filter; all substances entering the vascular tissues from the root must pass through these cells.
endodermis
In the center of the root is the _______ __________, including xylem and phloem tissue.
vascular cylinder
Most water is absorbed through a plant's _____ system.
root
Hydrogen bonding between water molecules is known as:
cohesion.
The process by which hydrogen bonding between water molecules causes tension that pulls water through the water column up through the stem and on to the leaves is known as the:
cohesion-tension process
The process by which the water that has traveled up through the plant to the leaves evaporates is known as:
transpiration
In plant reproduction, the diploid generation is known as a ________.
sporophyte
The reproductive organs of the sporophyte produce _______ through the process of meiosis.
gametophytes
True/False: Gametophytes may be male or female and are always haploid.
true
True/False: The male gameotophyte of a plant produces sperm and the female produces an egg cell.
true
When a sperm cell fertilizes an egg cell, they produce a ______.
zygote
True/False: Asexual reproduction occurs through mitosis only and produces offspring genetically identical to the parent.
true
True/False: Many plants reproduce from a combination of sexual and asexual reproduction.
true
True/False: Plants do not have hormones.
false
What process do the giberellins hormones (65) regulate or influence?
cell division and cell elongation
What process does the cytokinins hormone regulate or influence?
cell division and fruit development
What process does the abscisic acid hormone regulate or influence?
opening and closing of the stomata (controlling water lost through transpiration and formation of winter buds that put plant in a dormant state)
What process does the ethylene hormone influence or regulate?
ripening of fruit (spoiling releases ethylene which stimulates ripening of surrounding fruit); metabolic activity (ie producing female flowers to increase fertilization)
What process does the auxins hormone regulate or influence?
growth factors (ie tropism)
What is a tropism?
an involuntary response of an organism to an external stimulus such as light, water, gravity, or nutrients. For example, plant stems are usually positively phototropic (meaning they grow towards light) and plant roots are negatively phototropic (meaning they grow against light).
Are roots positively or negatively phototropic?
Negatively
Plant roots are negatively _______; meaning they grow toward the center of Earth.
geotropic
Tropisms are thought to be caused by plant ______, which react to the external stimulus causing some cells to grow quickly and other cells to grow slowly.
hormones
Variations of ______ levels also influence the strength of petioles and stems, regulating when leaves or fruit drop.
auxin
What is the characteristic that describes plants' response to relative periods of light and darkness?
photoperiodicity
What trait causes flowering and growth of varying plants at different times of year, due to a trigger response through light sensitive chemicals?
photoperiodicity
The transfer of pollen from the anther to the female stigma is termed:
pollination.
__________ is the transfer of pollen by an insect.
Entomophyly
__________ is the transfer of pollen by wind.
Anemophyly
The ___________ consists of the stigma, style, and ovary containing one or more ovules
gynoecium
True / False:
Some flowers develop in such a way as to pollinate themselves.
true
True/ False: Flower color is thought to indicate the nature of pollinator.
true
Red petals are thought to attract ______, yellow petals are thought to attract bees, and ______ petals are thought to attract moths.
red, yellow, white
Most of a plant's metabolism takes place in these cells.
Parenchyma
These vessels allow water to flow to different parts of a plant.
Xylem
In plants that undergo secondary growth, the periderm consists of which type of cells.
Cork
These cells have a hardening agent that makes them rigid. They have a support function in plants.
Sclerenchyma
Another name for bark is ...
Periderm