Unit 8 bio test

Assuming that they all belong to the same plant, arrange the following structures from largest to smallest (or from most inclusive to least inclusive). 1. spores 2. sporophytes 3. sporangia

2, 3, 1

when a flower is being dissected, which numbered part in the diagram should be cut open to expose the ovules

3

in the diagram of a flower, which structure produces a monoploid egg nucleus?

4

What is the function of a heterocyst?

Convert nitrogen gas to nitrate (nitrogen fixation)

which letter indicates the area where carbon dioxide passes out of the leaf?

G

Challenges for survival of the first land plants include I. sources of water. II. sperm transfer. III. desiccation. IV. animal predation. V. lack of structural support.

I, II, III, and V only

A monocot stem is represented in the figure above by

II only

A scientist recently discovered a pond organism that is unicellular, contains chloroplasts and other membrane-bound organelles, and possesses a flagellum. In which kingdom is this organism classified?

Protista

What is the dominant structure in the fern?

Sporophyte

What is one key difference between genetic transformation and transduction in prokaryotes?

Transformation involves the uptake of foreign DNA from the surroundings, whereas transduction involves a virus transferring DNA from one bacterium to another.

Name letter "B" from the longitudinal section of the root above.

Zone of Differentiation

which group of organisms does not depend upon obtaining performed organic molecules from the environment for nutrition?

algae? not protozoans

plants that produce flowers that only have male reproductive organs contain

anthers and filaments

a biologist could determine that a bean plant is more closely related to a pea plant than to a corn plant on the basis of the

arrangment of vascular tissue in the plants stem

Most green algae are able to obtain carbon dioxide from the environment and use it to synthesize organic compounds. This activity is an example of

autotrophic nutrition

during pollination, pollen is transferred from

b to a

Which of the following is the most abundant macronutrient in a plant's dry weight (excluding water) and is necessary for building all essential macromolecules?

carbon

What are the outermost cells of the stem cross section at the end of the pointer at microscope 2?

epidermal cells

Is the stem cross section at microscope 2 a eudicot or monocot?

eudicot

an organism was added to a test tube containing water, which was then sealed and placed in sunlight. The graph here shows an increase in oxygen content of the test tube over a period of time. Which type of organism was most probably added to the test tube?

green alga

which type of organism was most probable added to the test tube

green algae

Which of the following describes an organism that obtains both carbon and energy by ingesting prey?

heterotroph and chemotroph

the presence of cilia, an oral groove and food vacuoles, and the absence of chloroplasts in a unicellular organism indicate that the organism carries on

heterotrophic nutrition

Which tissue is responsible for plant growth?

meristem

which plant tissue should a student examine under a compound microscope to observe different stages of mitotic cell division

meristematic tissue from the tip of a root

Is the root cross section at microscope 1 a eudicot or monocot?

monocot

which organism is classified as a hetertroph?

not geranium. mushroom?

a peach fruit develops from the tissues of the

ovary

the dissolved sugars produced in the leaves of a maple tree move to the tree's roots through the

phloem

Which of the following traits do archaeans and bacteria share?

presence of plasma membrane

in which kindgom is this organism classified

protista

in maple trees, most gaseous wastes are

released into the air through the stomates

assume a flower has all structures listed below. if these strucutres are removed in their natural growth order, from the outside toward the center of the flower, which structure will have to be removed first?

sepal

The vascular bundle in the shape of a single central cylinder in a root is called the

stele

An association between the roots of a terrestrial plant with soil fungus is referred to as

symbiosis

During the process of evolution of an angiosperm,

the gametophyte became reduced, smaller, simpler, and short lived.

which statement is true for most autotrophic organisms

they synthesize organic molecules from inorganic molecules

What is the large white cell at the end of the pointer at microscope 1?

xylem

which cells in cornplants have a function most similar to blood vesels in earthworms

xylem cells and phoelem cells

The soil around a lilac bush was watered with a solution containing radioactive phosphorus. Several hours later, radiation was detected in its branches. Through which structures did the radioactive phosphorus reach the branches?

xylem vessels

through which structures did the radioactive phosphorus reach the bracnches

xylem vessels?