Practicum 1

Question

Comes from observation. What are we curious about ?

Hypothesis

The answer you think you will find

Predicition

“If/ then” statement .”if my hypothesis is true, then this will happen “

Independent variable

What we change or apply to one group.

Dependent variable

What we observe. Ex. Results after experiment, data found

Controlled variable

Factors that are the same in both experimental groups

Bacterial cells are

Prokaryotes

Do bacterial cells have a nucleus ?

Yes

What bacterial shape is shown here ?

Cocci

What polymer is a unique component of bacterial cell walls ?

Peptidoglycan

Name an antiseptic you expect to be effective against some bacteria

Lysol

What would you expect to see if the bacteria is SENSITIVE to the antibiotic disk ?

Clear zone around disk

What would you expect to see if the bacteria is RESISTANT to the antibiotic disk?

Full on growth around disk

What should you do if you spill a chemical ?

Call the teacher

Where are the safety showers located ?

Outside the hall

What is your instructors name?

Paula Gutierrez

What us one benefit of protists ?

They help produce oxygen

True/false protists are protists are prokaryotic

False

What shape of diatoms are shown below ?

Centric

What shape of diatoms are shown below ?

Pennate

What are 2 characteristics that Green algae share with land plants ?

They have chlorophyll a&b and they’re photosynthetic

What is one benefit of fungi ?

Helps make antibiotics

What is one negative role of fungi ?

They cause disease

Fungi are

Unicellular, Multicellular, and Eukaryotic

Give one piece of evidence that supports the relationship between land plants and green algae.

They can both do photosynthesis

all plants except _______ are sporophyte dominant

Bryophytes

List 2 reasons why are bryophytes are dependent on water

They need it in order for sperm & egg to meet to fertilize and to spread the gametophytes

Is imagine 1 showing male or female gametangia ? What is it called ?

Male antheridia

Identify the image and all structures within image. Know the dominant generation (sporophyte or gametophyte)?

Fern Young Sporophyte: Sporophyte is the clover shaped part, rhizoids are the hairlike structures, and the gametophyte is the bottom/base of structure. 

Where do you find sori?

You find sori on the back of a fern leaf.  

What does the sorus( sori) contain ?

Spores

Where would you find sori on a plant ?

Back of a fern leaf

What is the function of the seed coat ?

It is a protective coat that surrounds the seed

What happens to the endosperm?

It is found source for embryo , so they shrivel up after leaves are created

From what have the cotyledons developed ?

They have developed from seed leafs

how does the seed facilitate dispersal and survival of the plant ?

It is capable of lasting/surviving longer while in extreme environments

What are the three shapes of bacteria ?

-cocci

-bacilli

-spirilla

What is the ecological role of diatoms, the most important role ?

Most important photosynthesizers in cold, marine waters. They generate 20-50% of Earths oxygen.

Pennate

Bilaterally symmetrical

centric

Radially symmetrical

identify the image and all structures within the image , male or female?

Male: antheridia

identify the image and all structures within the image , male or female?

Female: archegonia

How are spores dispersed within these plants ?

They are dispersed through water because these are from moss plants

Male pine cone

Gymnosperm

Female pine cone

Gymnosperm

flower

Angiosperm

is water required for fertilization in bryophytes, seedless vascular plants, gymnosperms , or angiosperms

Water is required for fertilization in both bryophytes (mosses) and seedless vascular plants (ferns )

What is the method of pollination?

Water, wind, insects, animals 

How are spores dispersed?

Spores are dispersed via wind

Fern life cycle

angiosperm life cycle

moss life cycle

Pine life cycle

alternation of generations

parts of the flower

What generation is dominant for each life cycle? 

Bryophytes/mosses: gametophyte dominant 

What generation is dominant for each life cycle? 

Monilophytes/ferns: sporophyte dominant 

What generation is dominant for each life cycle? 

Gymnosperms/cones: sporophyte dominant 

What generation is dominant for each life cycle? 

Angionsperms/flowers: sporophyte dominant 

When are they haploid? 

They are haploid during their gametophyte phase 

When are they diploid ?

They are diploid during the sporophyte phase 

When does meiosis occur?

Meiosis occurs after the sporangium are grown 

When does mitosis occur? 

Mitosis occurs in between each phase 

conditions that must be favorable for seed germination 

Light, temperature, nutrients, and water 

Gravitropism

it is a plants response to gravity

Phototropism

it is a plants response to growing towards light