Principles of Plant Science Final

When the male and female cones are on separate plants, we refer to that condition as?

Dioecious

Which genus produces a massive, single cone at the apex which is surrounded by large pinnate leaves?

Cycas

The presence of wing like structures in pine pollens enable them for ____ pollination

Wind

In the life cycle of a typical conifer _____

Two kinds of spores are produced

A diploid mother cell within the sporangia of a plant undergoes ____ to produce spores

Meiosis

Pick the group that DOES NOT include seed-making plants

Pterophyta

Layer of thickened cells found underneath the pine needle epidermis is the ?

hypodermis

Which plant has the most bizarre sporophyte in having two strap-like leaves?

Welwitschia

Within the male sporangium, the developing pollen grains derive nourishment from the ____

tapetum

Which seed-bearing plant is a living fossil?

Ginkgo

When you use a commercial potting mix that you bought from a local home store, you are likely to be using the ____ along with other nutrients and soil.

Peat moss

In the phylum Bryophyta, the gametophytes are the dominant part of the lifecycle.

True

The following features are common in the phylum Bryophyta. But there is an exception.

Independent sporophyte generation

The structures like foot, seta, and capsule are parts of _____

both moss and liverwort sporophytes

Which of the following have the extraordinary absorptive capacity, and are used for a number of purposes including a nursery soil conditioner, fuel, and formerly a poultice material during World War I?

Peat moss

Which bryophyte has their male gametangia aggregated on stalked structure called antheridiophores?

Thalloid liverwort

The most studied thalloid liverwort which we used as an example to learn the lifecycle events was?

Marchantia

A moss calyptra

originates from the archegonium

Food-conducting cells present in some mosses are known as?

leptoids

The multicellular filaments that are intermingled with gametangia of most mosses are the___

paraphyses

A moss gametangium would produce?

haploid gametes

Coiled, spring-like structures that aid in Marchantia spore dispersal are the?

elaters

Bryophytes have ____ that help conduct water

hydroids

What is a peristome?

teeth-like structure that aids in spore dispersal

The common name “ground pine” is based on the appearance of the ____ which resembles little conifer trees.

Lycopodium sporophyte

Bryophytes, ferns, and lycophytes all require _____ for sexual reproduction because the sperm cells ____

surface water; must swim to the egg cells

Which of the following changes occurred during the early stages of seedless vascular plant evolution?

Internal conducting tissues developed

A major difference between club moss spores and spike moss spores is that ____

spike moss spores are of two types; whereas club moss spores are of the same type

The movement of random molecules from a region of high to low concentration is?

Diffusion

Osmosis is a special kind of water diffusion in which water molecules

move across a selectively permeable membrane

Embryophyte

Land plants that develop from a multicellular embryo, have a cuticle. Includes mosses, ferns, pines, and all flowering plants.

Bryophytes

Non-Vascular plants that are the most primitive members of the plant kingdom and need external water to sexually reproduce.

The sporophyte of a true moss is ____

dependent on the gametophyte

The calyptra is a part of the ____ generation?

gametophytic

When an entire plant wilts, it is due to _____

plasmolysis that occurs in leaf and stem cells

If plant cells are surrounded by a hypertonic solution, the water molecules will _____

move out of the cell

Hydathodes are involved directly in which of the following?

Guttation

Most plants have their stomata closed during the day and open at night

False

The direction of movement of food molecules in plants is ____

from source to sink

Most of the water that enters a plant via the roots leaves the same plant by process of:

transpiration

The shortest wavelength of light used in photosynthesis are those of:

blue light

Respiration is an example of a/an ____ set of chemical reactions in plants.

Catabolic

The carbon dioxide used by green plants during photosynthesis comes from

the atmosphere

C3 pathway is the only method of fixing carbon in:

majority of land plants including soybean

photosynthetic light-dependent reactions can only take place in the presence of light

True

Which pigment group in the higher plants dissipates excessive light energy into heat?

chlorophyll c and phycobilin

Fern prothallus

haploid

Club moss microphyll

Diploid

Fern crozier

diploid

Whisk Fern spore

haploid

Which plant has fan-shaped leaves with a notch at the tip?

Ginkgo

One unique feature of the pine needles is the presence of _____

endodermis

The nutritive tissue that nourishes the developing female gametophyte is the ____

nucellus

Layer of thickened cells found underneath the pine needle epidermis is the ____

hypodermis

In the life cycle of a typical conifer ____

two kinds of spore are produced

Which genus produces a massive, single cone at the apex which is surrounded by large pinnate leaves?

Cycas

In a pine cycle, the male gametophyte is the ____

pollen grain

Which seed-bearing plant is a living fossil?

Ginkgo

Hydroids

Water-conducting cells of a moss

Rhizoids

Bryophyte plants anchor themselves with these structures

Leptoids

Food-conducting cells of a moss

The majority of plant species belong to which phylum?

Anthophyta

After fertilization, the _____ becomes the seed

Ovule

The most abundant tissue in a herbaceous plant is the:

Parenchyma

Which part of a leaf is directly attached to the stem?

petiole

One of the main functions of stomata is to allow for?

Transpiration process

Which type of stele pattern is found in dicot roots?

protostele

Casparian strips are part of the ____

root endodermis