BI0 102; Exam 2

which of the following are products of the light reactions of photosynthesis that are utilized in the Calvin cycle?

ATP & NADPH

In figure 2. which processes are labeled by the number 1 & 2?

BOTH 1 & 2 are mitosis

which type of plant has a gametophyte dominated life cycle?

Bryophyte or moss

in Figure 3. why might bands be so narrow near the site marked with the letter G?

DRY years with LOW growth rates

which marks an usual feature in Figure 3 that might have been caused by a fire?

Letter F

in the process of alternation of generations, the......

Sporophyte is DIPLOID & produces SPORES

T/F Ground tissue, terminal tissue, & vascular tissue systems are present in ALL parts of a plant body?

TRUE

red, brown, & some green algae exhibit alternation of generations. All land plants exhibit alternation of generations. NO charophytes (stoneworts) exhibit alternation of generations. Keeping in mind the recent evidence indicating charophytes are the sister group to land plants, we can infer .........

alternation of generations likely evolved independently in land plants as well as in red & brown algae

which of the following enters against its electrical gradient when it is taken up across the membrane of a plant cell?

an anion

the proteins of the electron transport chain active in light-dependent reactions ......

are membrane proteins present in the THYAKOID

the value for W in root tissue was found to be -0.15MPa. if you take the root tissue & place it in a 0.1 M solution of sucrose, (W=-0.23 MPa) the net water flow would.....

be from the tissue into the sucrose solution

acid rain has hurt trees in the Black Forest of Germany by causing what to happen to nutrients?

cations have leached out of the soil & lost from the forest ecosystem

which of the following hypothesis is currently the best supported explanation for how water can move from plant roots to shoots?

cohesion-tension theory

which of the following have Unevenly thickened primary walls that support young, growing parts of the plant?

collenchyma cells

a waxy protective layer on the surface of leaves that prevents water loss is called ....

cuticle

which of the following was a challenge to the survival of the first land plants?

desiccation

in terms of alternation of generations, the internal parts of the pollen grains of seed-producing plants are most similar to a ....

fern gametophyte bearing only antheridia

Angiosperms are the most successful terrestrial plants. Which of the following features is unique to them & helps account for their success?

fruits enclosing seeds

The most direct ancestors of land plants were probably _____.

green algae

In plants, which of the following are produced by meiosis?

haploid spores

a particular species of protist has obtained a chloroplast via secondary endosymbiosis. you know this b/c the chloroplasts .......

have 3 or 4 membranes

As electrons are passed through the system of electron carriers associated with photosystem II, they lose energy. What happens to this energy?

it is used to establish & maintain a proton gradient

according to the cohesion tension theory, how might an increase in sunlight affect xylem pressure in a plant?

it would decrease, pulling water up a plant

When you eat Brussels sprouts, you are eating _____.

large axillary buds

an undifferentiated cell that can develop into 1 or more specialized cell types in a plant is called a....

meristem

which of the following cells sometimes contain many chloroplasts?

parenchyma cells

which of the following statements best describes the relationship btw. photosynthesis & respiration?

photosynthesis stores energy in complex organic molecules; respiration releases energy from complex organic molecules

which component of the light reactions is involved in transporting protons across the thylakoid membrane?

plastoquinone

water potential in plants consists mainly of ......

pressure potential & solute potential

........ growth makes a plant longer, .......... growth makes a plant wider

primary, secondary

what is the name of a primary meristem for vascular tissue?

procambium

Plants contain meristems whose major function is to...

produce more cells

which of the following is correctly paired with its structure & function?

sclerenchyma -supporting cells with thick secondary walls

which of the following cells are DEAD at MATURITY?

sclerenchyma cells

When oxygen is released as a result of photosynthesis, it is a direct by-product of......

splitting water molecules

a SINGLE cell can develop into an adult plant but does NOT consist of a plant embryo is called a ..

spore

carbon dioxide enters the inner spaces of the leaf through the .....

stoma

based on the phylogeny in Figure 1, which of the following traits fo liverworts lack BUT other land plants have?

stomata

see figure 2. which organisms are labeled A & B?

the sporophyte is labeled A, the gametophyte is labeled B

mycohorrizae differ from nitrogen-fixing symbionts because .....

they speed up the rate of nutrient regeneration while nitrogen fixers introduce new nitrogen to the soil

the primary role of a plant's apical meristem is .......

to trigger growth of new cells in roots & shoots

based on the phylogeny in Figure 1, roots & tracheids are synapomorphies of which plant group?

vascular plants

1 of the earliest adaptions of land plants was NOT which of the following?

vessel elements

the electrons of photosystem II are excited & transferred to electron carries. From which molecule or structure do the photosystem II replacement electrons come?

water

ALL of the letters of Figure 3 are marking annual rings in what type of plant tissue?

xylem