BIOA02H3 : Lec03 - Plant Cells and Plant Tissues.doc

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22 Apr 2012

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BIOA02H3 Full Course Notes

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Slide one basic stem -> elaborate adaptations: cacti stem is the organ of photosynthesis, also organ of water storage, potatoes are not roots but modified stems. Slide two basic leaf -> elaborate adaptations: do things other than photosynthesis. Leaves modified into tendrils that are used to crawl up other plants: modified leaves (venus fly trap) catches flies, pitcher plant creates a flask like structure with digestive enzymes and water to catch insects. Slide three basic roots -> elaborate adaptations: many vegetables we eat are storage roots (starch sugars etc, swamp cedar send roots into air to get air and carbon dioxide. Invasive roots that are sent into the ground from the branches of trees. Slide six plant cells and plant tissues (real lecture starts here: undifferentiated cells: meristems, differentiated cells. Slide seven difference in growth between plants and animals: giant sequoia (tree has indeterminate growth, humans have determinate growth.

Related Questions

PART 2

Q2.1) Give TWO major differences between the flowers of a plant that is pollinated by wind and the flowers of a plant that is pollinated by bees.

Q2.2) Give TWO major differences between determinate growth and indeterminate growth in plants.

Q2.3) Give ONE major difference between seeds that are dispersed by an animal internally and seeds that are dispersed by an animal externally.

Question 1: A slide of a terminal plant bud shows what physical characteristics demonstrating growth?

Answers:

1. an actively dividing group of cells between primordial leaves with undifferentiated vascular tissue

2. a vascular system with vascular bundles

3. spongy mesophyll tissue

4. sieve tubes, vessel elements and tracheids

Question 2: As the earth warmed and dried around 150 MYA, plants requiring _______ for fertilization were no longer dominant, but were eclipsed by plants that were ______ bearing named ___________ (literally naked seeds). These plants used _____ for fertilization freeing themselves from dependence on water. As animals of the era became terrestrial with means of terrestrial reproduction strategies, plants did the same using two different structures along with internal fertilization, the _____ being internal and fertilized by a wind carried _________ grain.

Answers:

1. water, seed, charophytya, dinosaurs, zygote, pollen

2. water, seed, gymnosperms, wind, egg, pollen

3. spores, cone, tracheids, water, pollen, embryo

4. water, flower, angiosperms, animals, spore, egg

Question 3: In the pith region of a stem the vascular system consists of two major structures;

Answers:	1. Phloem with trachieds and vessel elements and xylem with sieve-tubes and companion cells
	2. Sclerechyma fibers and parenchyma cells
	3. Phloem carrying photosynthesis products and xylem carrying water with dissolved nutrients
	4. Phloem carrying water with dissolved nutrients and xylem carrying photosynthesis products.

coraldolphin670

While Jill and Andre were studying for their Biology exam, Andre said, âAnimals perform cellular respiration and plants perform photosynthesis.â What about Andreâs statement should Jill have told him was incomplete?

Animals also perform photosynthesis.

Plants do not perform photosynthesis.

Animals do not perform cellular respiration.

Plants also perform cellular respiration.

There is nothing incomplete about Andreâs statement.

Question 3

Select one answer.

10 points

Select the incorrect statement regarding respiration and fermentation from the list below.

Respiration produces much more ATP than fermentation

Respiration produces acidic products, fermentation does not.

Both respiration and fermentation use organic molecules.

Respiration uses oxygen, fermentation does not.

Question 4

Select one answer.

10 points

Energy is harvested from which reaction to produce ATP?

Carbon dioxide and water â sugar and oxygen.

Sugar and oxygen â carbon dioxide and water.

Question 5

Select one answer.

10 points

What is the source of energy for photosynthesis?

Light

CO2

Water

Sugar

Question 6

Select one answer.

10 points

One way to explain how cellular respiration and photosynthesis relate to each other is to say that:

Plant cells use the oxygen produced by respiration for photosynthesis.

The oxygen produced by photosynthesis, once released to the environment, is the oxygen able to be used as the electron acceptors for cellular respiration.

Cellular respiration is a series of reduction reactions while photosynthesis is a series of oxidation reactions.

The two processes are not related.

The use of oxygen by plants contributes to the greenhouse effect.

Question 7

Select one answer.

10 points

The calculated net amount of ATP produced from one glucose molecule during aerobic respiration in eukaryotes is

100

Question 8

Select one answer.

10 points

All of the following statements is true of photosynthesis, EXCEPT:

Releases CO2

Releases oxygen

Glucose is produced.

Water is required

Question 9

Select one answer.

10 points

Which of the following is an anabolic pathway?

photosynthesis

cellular respiration

fermentation

all of these processes

Question 10

Select one answer.

10 points

Plant leaves contain many different pigments. What is the purpose of having multiple pigments?

Capture light for photosynthesis at different wavelengths.

To absorb light that may harm the photosynthetic machinery.

To give leaves different colors in the fall.

orchidpig270

BIOA02H3 : Lec03 - Plant Cells and Plant Tissues.doc

BIOA02H3 Full Course Notes

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