Midterm 3 material.
Terms in this set (54)
Which of the following is characteristic of gymnosperms?
They are wind-pollinated
What is endosperm?
a food-storing tissue of the seed
Xylem tissue conducts water while phloem tissue conducts:
The stamens of a flowering plant are broken down into two separate parts. The long, stalk-like structure is the _______ and the pollen-producing bodies on the tips are the ________.
Which of the following is a significant new challenge plants faced in moving to land that they had not faced in their aquatic environment?
_______, the largest group of extant plants, currently have about ________ species.
holes created by open guard cells in a leaf.
Which of the following lists correctly represents the order of evolutionary events in the history of plants, from earliest to most recent in time?
roots, vascular tissue, pollen, flowers
Which of the following is NOT an example of a gymnosperm?
A plant takes up water through its _______ and expels water through its _________.
In angiosperms the ________ are the specialized reproductive organs whose main function is to bring together the sperm and egg.
Ovules become seeds and ovaries become:
What are the initial leaves produced by a seeding called?
In flowering plants, meiosis occurs:
in both the ovule and the anther
Which of the following is the most diverse group of plants?
Primary plant growth occurs at the:
very top of a plant; tips of branches (all of the above are correct)
The endosperm that forms at the time of fertilization comes from:
The fusion of a sperm cell with the central cell of the embryo sac.
A germinating corn kernel produces a seedling with one cotyledon, whereas a germinating tomato seed produces a seedling with two cotyledons. From this information, what is a corn plant and what is a tomato plant?
A corn plant is a monocot; a tomato plant is a dicot.
The cuticle of a leaf is:
a waxy non-living layer that minimizes water loss.
Plants with the diploid stage smaller than and dependent upon the haploid stage are called:
As reproductive strategies have evolved in plants:
their gametes have become progressively larger
The phrase double fertilization in angiosperms is best described by which of the choices below?
Each pollen grain contains two sperm cells; one leads to the fertilization that produces the embryo and the other leads to the fertilization that produces the endosperm.
In terms of their adaptation to living on land, how are reptiles similar to the seed plants?
both c) and d) are correct.
Seed plants and reptiles have developed structures such as cuticles and impermeable skin in oder to minimize desiccation; reptiles and plants have developed structures that house and protect their gametes from the surrounding environment.
Gymnosperms and angiosperms have the following in common except:
Fruits often taste bad before they ripen. This is probably because:
fruit that gets dispersed before the seeds are developed may not be capable of propagating new plants.
Sexual reproduction enhances genetic diversity of offspring for three reasons: 1) genetic material from two individuals is mixed; 20 crossing over creates new allele combinations; and 3):
homologues are randomly reassorted.
Which of the following is a function of a plant's roots
anchor the plant in place.
Why are leaves generally very thin?
sunlight cannot penetrate more than a few layers of cells.
When a meristem tissue divides:
One cell differentiates into plant tissue while the other remains a meristem cell.
Which of the following is NOT a structural characteristic that allow conifers to grow taller and reach older ages than any other plants?
water distribution throughout plant by diffusion.
Both mosses and ferns must have free standing water present (e.g., water droplets) in oder to fulfill their requirements for fertilization. Which of the following choices is the most likely explanation for why this would be?
both mosses and ferns have motile male gametes that require water to travel to the female gametes.
Which of the following is NOT a function of a plant's stem?
serve as the primary site of photosynthesis in the plant
Meristem cells left behind as the top of a plant grows higher, are:
Flowering plants have evolved to attract animals to assist them in pollination. Which of the following animals is not a common pollinator of flowering plants?
bats, hummingbirds, moth, bumblebees. all of the above are common animal pollinators of flowering plants.
Early seed plants were pollinated by:
A plant that has flowers with no petals is most likely to be:
pollinated by the wind
From an evolutionary standpoint, why do many flowers have attractive colors and smell good?
to facilitate the transport of male gametes to female structures.
Which of the following flower parts develop into a seed?
which of the following is NOT an example of an angiosperm
Fruit develops from a plants'
the scientific name for wood is
what structures on a leaf will help reduce water loss
hairs and stomata
the common term for the action of transferring pollen grains from an an anther onto a stigma is
which of the following could be considered a "layer of lateral meristem cells"?
A seed is:
both b and c are correct
The evolution of seeds allowed for:
plants to colonize for dryer climates
serve to attract animals to collect and disperse pollen.
The ______ is made of dead cells with rigid cell walls that provide a plant with support, was well as conducting water through a plant.
The receptive surface for pollen grains is the
Which of the following is true about monocots and dicots?
monocots are flowering plants
Which of the following is NOT true about secondary growth seen in trees?
Cells of the vascular cambium produce a ring of cells toward the inside of the trunk called the lateral meristem.
The angiosperms have many synapmorphies-shared derived traits-that characterize them from other seed plants. Which of the following is NOT one of these synamorphies?
All of the above are synamorphies in the angiosperms.
Which of the following terms includes all the others in the list?
Which of the following is NOT a characteristic that allow conifers to grow taller and reach older ages than any other plants?
water distribution throughout plant by diffusion
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