BIOA02H3 Lecture : From Seed to Tree

49 views4 pages

maroongoldfish192

22 Jan 2012

School

Department

Course

Professor

For unlimited access to Class Notes, a Class+ subscription is required.

hans15149 and 39222 others unlocked

BIOA02H3 Full Course Notes

Verified Note

43 documents

Document Summary

Bioa02 module 1 lec 5: from seed to tree. I. e. common milkweed and virgin"s bower have pods which contain seeds which have light fluffy hair which travels easily through wind. I. e. dandelion each seed has a parachute. I. e. winged maple heavier than dandelion and the milkweed therefore they have wings that help them travel hrough the wind. I. e. orchid seeds so tiny that they don"t need appendices to help them move through the wind and dispersed dust-like seeds. I. e. coconut seed is so well protected that it can travel in the harsh environment of salt water for several years. I. e. beach sea beans produce hard seeds which are similar to coconuts and can survive long time in salt water. I. e. jewelweed have seed pods which are under a lot of pressure when ripe and are touched they explode and catapult away the seeds. Ants get a nutritious food called elaiosomes ( oil body in return for seed dispersal.

Related Questions

Which most correctly describes the process of pollination in flowering plants?

The parent plant is dispersing its male offspring to mate with the female offspring of another plant.
	The plant is providing pollen as food for insect visitors.
	Pollen is the sperm of the parent plant and it is carried by the wind or an insect to the egg of another plant.
	Pollen from the anther of one flower is carried by insects to the anther of another flower.

blackhyena949

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.

2. What would you expect if the ability to produce capsaicin isgenetic? Choose all that apply.
a. Some offspring of plants that produce capsaicin will alsoproduce capsaicin.
b. It is not possible to predict if offspring of plants thatproduce capsaicin will also produce capsaicin. c. Plants will onlycontain capsaicin if it is present in the soil and can be absorbedby the roots.

3. In biology, what is an adaptation?
a. A trait with a genetic basis that increases the fitness of anindividual with the trait in a particular

environment, compared to individuals lacking the trait.
b. A characteristic of an organism that can change in response tothe environment.
c. Any characteristic of an organism that increases the fitness ofan individual in a particular environment,

compared to individuals lacking the trait.

4. Consumption of chili fruits by rodents would ...
a. Decrease the fitness of chili plants since gnawing damages theseeds.
b. Have no effect on the fitness of chili plants since the plantproduces lots of seeds and fruits. c. Increases the fitness ofchili plants since seeds are dispersed to new locations.

âLas alas del Diabloâ by Brett C. Couch

Page 5

NATIONAL CENTER FOR CASE STUDY TEACHING IN SCIENCE

How might dispersal of chili seeds by birds benefit a chiliplant? Choose all that apply.
a. Seeds are transported to new locations so the offspring are notgrowing close to the parent and competing

with it for light, water, space or minerals from soil.
b. Some seeds may be moved to locations with appropriate conditionsfor growth of seedlings.
c. Some seeds may be moved to locations that lack appropriateconditions for plant growth.
d. Seeds are widely dispersed so the offspring donât compete witheach other for light, water, space or minerals

from soil.
e. Seeds are damaged when the birds eat the fruits and fail togerminate.
Consumption of chili fruits by birds could ...
a. Increase the fitness of thrashers by providing nutrition, whichcan contribute to the increased production of

offspring.
b. Have no effect on the fitness of thrashers since thrashers donâtdigest the seeds and the nutrition in the seeds

would not contribute to increased production of offspring.
c. Reduce the fitness of thrashers since thrashers donât digest theseeds and the loss of nutrition in the seeds

would reduce the production of offspring.
What is an experimental control?
a. An experimental group or treatment that serves as a reference towhich a treatment group or treatment(s)

can be compared.
b. A group that is not used in an experiment.
c. An experimental group or treatment that represents naturalconditions. d. An experimental group or treatment that lacks thefactor of interest.
Does capsaicin production have a genetic basis?
a. Yes, capsaicin production is controlled by the Hot2 gene.
b. Yes, capsaicin production is controlled by the Pun1 gene.
c. No, if capsaicin is present in the soil it is taken up by theplant and concentrated in the fruit. d. No, capsaicin is made bythe plant not a gene.
What is (are) the control(s) in the food choice experimentperformed by Tewksbury and Nabhan? a. Hackberry

b. Mild chilies
c. Hot chilies
d. Hackberry and mild chilies e. Mild chilies and hot chilies
Why is hackberry used as a control?
a. Hackberries are a control for fruit characteristics other thancapsaicin (e.g., color, other chemicals). b. Hackberries are acontrol for hunger or willingness to eat.
c. Hackberries are part of the natural habitat of cactusmice.
d. a and b.
e. a, b and c.
What criteria must be met for a trait to be considered anadaptation?
a. Individuals with the trait generally have more offspring thanindividuals without the trait. b. The trait changes due to theenvironment (e.g., animals growing a thick coat in winter). c. Thetrait can be passed on to an organismâs offspring.
d. a and c.
e. a, b and c.

ultramarinehornet16

BIOA02H3 Lecture : From Seed to Tree

BIOA02H3 Full Course Notes

Document Summary

Get access

Related Documents

BIOA02H3 Lecture Notes - Lecture 6: Elaiosome, Hitchhiking, Myrmecochory

BIOA02H3 Lecture 6: BIOA02 Lecture 6

BIOA02H3 Lecture Notes - Lecture 5: Inbreeding Depression, Apical Dominance, Flowering Plant

Related Questions