A. Leaves
Carpels are modified __________ that enclose the seeds:
A. Leaves
B. Petals
C. Sepals
D. Gametophytes
B. Four carpels, each carpel with one seed cavity
This tomato that you bought in the supermarket and sliced at home has:
A. One single carpel with 4 "seed cavities"
B. Four c...
BSC 2011 - EXAM 3 QUESTIONS AND ANSWERS
A. Leaves
Carpels are modified __________ that enclose the seeds:
A. Leaves
B. Petals
C. Sepals
D. Gametophytes
B. Four carpels, each carpel with one seed cavity
This tomato that you bought in the supermarket and sliced at home has:
A. One single carpel with 4 "seed cavities"
B. Four carpels, each carpel with one seed cavity
C. Unknown number of carpels
D. Carpels that are not fused but free
C. The ovary of a carpel
Most fruits that you buy in the supermarket will still have:
A. A complete carpel
B. The style and the ovary of a carpel
C. The ovary of a carpel
D. The stigma of a carpel
angiosperms
Flowering plants that undergo double fertilization
carpel
A modified leaf that covers seeds, develops into fruit.
For example, legumes have one and tomatoes have two to three that fuse and make a fruit. These structures are not free. Through plant breeding, researchers have produced tomatoes with more than three of these.
whorls; sepals; petals; stamens; gynoecium
Flowers are organized in concentric circles called ______.
Outermost - ______
Second - ______
Third - _______ (androecium)
Innermost - _________
ovule
The gynoecium consists of one or more carpels and houses the female gametophyte inside the _____ which is not a carpel, not a gametophyte, and has 2n and n cells.
pollen; anther; filament
The male gametophyte of angiosperms is called ______. Each stamen has an ______ and a ________ (stalk).
ovary; stigma; style
A carpel has 3 major regions:
_____ - swollen base containing ovule. Later develops into a fruit
______ - tip where pollen lands
_____ - neck or stalk 4; 8; 7
Development of Embryo Sac, the female gametophyte of angiosperms:
The single megaspore mother cell (2n) in the ovule undergoes meiosis, which produces _ megaspores (n). 3 disappear and 1 remains. The remaining megaspore divides (three
mitosis events) to produce _ haploid nuclei, which will later form _ cells.
Integuments
These become the seed coat and form the micropyle. (2n, and identical to mother tissue)
8; 7; 2; Central/Polar Cell
egg; synergids; antipodals
The embryo sac = female gametophyte with _ nuclei in _ cells. _ nuclei migrate toward the center and inside one cell, the ______/_____ ____. Therefore with two polar nuclei (cell is n+n).
___ → 1 cell in group closest to micropyle (egg cell)
__________ → 2 flanking the egg cell
3 __________ → 3 cells at other end
microspore mother cells; 4; pollen grains; 1; 2
Pollen production occurs in the anthers
Less complex than female gametophyte formation
Diploid __________ ______ _____ undergo meiosis to produce _ haploid microspores. They undergo mitosis resulting in ______ ______. They eventually will have _ vegetative or tube cell and _ sperm/generative cells.
zygote, male gamete, sporophyte, triploid endosperm
Double Fertilization (three main steps):
Two generative sperm cells enter the cytoplasm of one of the synergids.
One sperm cell unites with the egg to form the diploid ______. This sperm cell is called the ____ ______. This will result in an embryo and a new __________. The other sperm unites with the two polar nuclei to form the ________ _________, which will provide a source of nutrients to the embryo during seed.
E. None of the other options are correct
Which of the following are correct on Embryo Sacs:
A. Gymnosperms
B. Hundreds of haploid cells
C. Tube cells
D. Two gametes
E. None of the other options are correct
A. Haploid
Megaspores are:
A. Haploid
B. Produced inside the anthers
C. Made of haploid and diploid cells
D. Made of seven diploid cells
dermal; ground; vascular
There are 3 basic tissue types through root and shoot systems:
______ - outer protective layer
______ - function in storage, photosynthesis, and secretion
________ - conducts fluids and dissolved substances
Tissues consist of one or more cell types
Parenchyma
(1/3 ground tissue cell type)
- Function in storage, photosynthesis, and secretion
- Most common type of plant cell
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller Greaterheights. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $15.99. You're not tied to anything after your purchase.
