BIO 104 - Test 2
Which group of plants were the most recent to evolve?
Angiosperms
The plant ground tissue system consists of three tissues that can be distinguished by which of the following?
Cell wall structures
Why are mosses and liverworts limited in size?
They lack vascular tissues
Blood and lymph are circulating tissues that help other parts of the body to communicate and interact.
True
Glial cells support and nourish neurons.
True
Plants, like animals, grow at all points of their body.
True
The cells of bone are called osteocytes.
True
The human body's "thermostat" is the hypothalamus.
True
Which organelle increases in size, causing plant cells to elongate?
Vacuole
Which vascular tissue is responsible for conducting water and dissolved minerals in plants?
Xylem
A main function of a plant's root system is to:
absorb dissolved nutrients and water
Primary growth involves:
an increase in length.
What is the male sexual structure that produces sperm in pants?
antheridium
Gametophytes also produce female gametangia known as:
archegonia
Both smooth muscle fibers and cardiac muscle fibers
are under involuntary control.
A plant that requires two years to complete its life cycle is referred to as a(n):
biennial
One difference between cardiac muscle fibers and skeletal muscle fibers is that cardiac muscle fibers
branch and form complex networks, while skeletal muscle fibers do not.
How are the sperm of moss transported to the archegonia?
by both insects and water
Cells called _________ compose cartilage.
chondrocytes
Ectothermic animals
depend on heat from the external environment to adjust their body temperatures.
The four basic animal tissues are
epithelial, connective, muscle, nervous
The oldest known mega fossils of _____________, discovered in New York, are dated at 380 million years old. These trees, which were about 8 m tall, has vascular tissues but no leaves and a minimal root system.
fernlike trees
The haploid portion of the life cycle is called the __________ because it gives rise to haploid gametes by mitosis.
gametophyte generation
Some liverworts reproduce asexually by forming tiny balls of tissue called:
gemmae
parenchyma, collenchyma, and sclerenchyma are classifies as tissues in the:
ground tissue system.
Exocrine glands
include goblet cells and milk glands
Which of the following plants is an annual?
iris
The gametophyte is the dominant stage in the life cycle for which of the following plant groups?
liverworts
A group of associated tissues is known as a(n)
organ
All woody plants are:
perennials
A root cap:
protects the fragile meristematic cells at the root tip.
The gametophyte generation of ferns is the:
prothallus
When a moss spore lands in a suitable spot, it germinates and grows into a filament of cells called a:
protonema
Each individual gametophyte plant has tiny, hair like absorptive structures known as:
rhizoids
Which of the following is often dead at maturity?
sclerenchyma tissue
What do ferns lack?
seeds
The main difference between elastic and reticular fibers is that only elastic fibers
stretch
Which of the following is not a type of connective tissue
the heart
A ________ is a group of closely associated similar cells.
tissue
Refer to the accompanying figure. The labeled structure that is responsible for secondary growth is:
vascular cambium
Which of the following are just under the plant stem epidermis?
Collenchyma
The plant vascular system performs which of the following functions?
Conducts water, dissolved minerals, and food
After a moss spore germinates, it forms a prothallus.
False
Cardiac muscle fibers lack striations.
False
Club mosses belong to the phylum Bryophyta.
False
Connective tissue contains three types of fibers: collagen, elastic, and cartilage.
False
Each archegonium produces many eggs.
False
If a plant produces microspores and megaspores, then by definition it is homosporous.
False
Mosses have stems, roots, and leaves.
False
Shivering helps decrease body temperatures.
False
Which tissue system of the plant body is largely responsible for photosynthesis?
Ground tissue system
The cell walls of woody plant secondary tissues contain which of the following?
Lignin
________ are small leaves with a single vascular strand.
Microphylls
How do mosses help prevent soil erosion?
Mosses are packed in dense colonies, holding soil together.
What two tissues transport materials throughout the entire plant body?
Phloem and xylem
Which is the most economically important bryophyte?
Sphagnum
Vessel elements and tracheids, while differing slightly in structure, both conduct carbohydrates.
False
Which organ system coordinates activities of other systems?
Nervous system
Which term best explains why collagen fivers are abundant in tendons?
Strength
Which of the following initiates a homeostatic response?
Stressor
A mass of undifferentiated plant cells is called a callus.
True
A sorus is a cluster of sporangia.
True
An archegoniophore is found in certain liverworts.
True
What are the conducting elements in phloem?
sieve tube elements
Which of the following is heterosporous?
spike moss
