BYS 120 Lab 5
Plant
Reproduction
Image Credit: commons.wikimedia.org
Lab 5:
Alternation of Generations
Image Credit: http://www.bio.miami.edu/dana/dox/altgen.html
Lab 5: Bryophytes
Moss Life Cycle
Identify
Protonema
Capsule
Archegonium
Antheridium
Image Credit: commons.wikimedia.org
Lab 5:
Pteridophyta (Ferns) &
Lycophyta (Club Moss)
Identify
Fern Sporangia
Club Moss Strobilus
Image Credit: commons.wikimedia.org
Lab 5: Coniferophyta
Conifers & Pines
Identify
Pinus, ovulate cone
Pinus, male cone
Image Credit: commons.wikimedia.org and https://www.nps.gov/
Lab 5:
Angiosperms
Flowering Plants
Identify
Lily Ovary
Onion Root Tip
 Root Cap
 Apical Meristem
 Zone of Elongation
 Zone of Differentiation
Image Credit: commons.wikimedia.org
Lab 5:
Flower Dissection
Identify
 Sepal
 Petal
 Stamen
 Anthers
 Pollen
 Pistil
 Stigma
 Style
 Ovary- eggs
Image Credit: https://www.flickr.com/photos/proflowers/15099656846/in/photolist-p1iFV9
Lab 5:
Flowers and
Pollination
 Complete Flowers – Contains all four major organs
petals, sepals, stamens, and pistils
 Incomplete Flowers – Does not contain all of the four
major organs
 Self Pollination – pollen from a flower pollinates the
either the same flower or another flower on the same
plant
 Cross Pollination – pollen from a flower pollinates a
different flower on a different plant
 Pollination Vectors:
 Wind Pollination: Dull, scentless flowers with reduced petals
 Bees/Butterfly Pollination: Bright color, nectaries, scented flowers
 Bird Pollination: Nectaries, bright colors, tube-like flowers
 Moth Pollination: White petals, open at night
 Fly Pollination: Rank odor, flesh colored petals
Lab 5:
Fruit Types
- Dry
 Dry Fruits
 Indehiscent - remain closed at maturity
 Achene - single seed attached to fruit wall at single point
 Marigold, zinnia, dahlia
 Grain – single seed fused to fruit wall
 Corn, rice, oats, grass
 Nut – single seed with hard fruit wall
 Chestnut, hickory, hazelnut
 Samara – fruit wall becomes a wing
 Ash, elm
 Dehiscent – open at maturity
 Follicle – splits along one side
 Peony, larkspur, delphinium
 Legume – splits on two sides
 Peanut, bean, alfalfa
 Capsule – splits in many places
 Cotton, primrose, poppy
Lab 5:
Fruit Types
- Fleshy
Fleshy Fruits
 Drupe - single stony seed surrounded by fleshy fruit
 Cherry, olive, plum
 Berry – soft and fleshy throughout, many seeded
 Tomato, kiwi, banana, pepper
Fruit Development Types
 Aggregate – develops from many pistils of a flower
 Blackberry, strawberry
 Multiple – develops from many pistils of multiple flowers
 Mulberry, breadfruit
 Accessory – develops as the flower enlarges
 Squash, apple, pear
Lab 5:
Schedule
 Plant your plants for the semester research project
 Plant 5 controls and 5 experimental pots  2 seeds per pot, add 2 or 3 pellets of fertilizer to each pot
 Remember to bring any special items your group needs such as
spray bottles, special water or materials, light or shade boxes
 Know the watering details for your plants, the TAs will be
watering on MWF
 Clean your lab bench before proceeding with the rest of Lab 5
 Observe plant structures using the microscope, these will be set-up
and ready for you to use
 Dissect a flower and identify the reproductive structures
 Observe the different type of plants around the room
 Complete seed identification activity using the flash cards at your
lab bench
Moss - Archegonium
Moss - Antheridum
Moss - Protonema
Moss - Capsule
Fern - Sporangia
Conifer – Male Cone
Club Moss - Strobilus
Conifer – Female Cone
Lily – Ovary & Onion - Stem
 Moss – Archegonium, Antheridum and Capsule
 https://bio.libretexts.org
 Moss Protonema
 https://en.wikipedia.org/wiki/Protonema
 Fern Sporangia
 http://faculty.baruch.cuny.edu/jwahlert/bio1003/pterophyta.html
 Club Moss Stobilus
 https://www.flickr.com/photos/occbio/5581136693
Image Sources
 Conifer Male
 https://botanycompanion.wordpress.com/lesson-5-seeds-and-gymnosperms/
 Conifer Female
 http://www.bio.miami.edu/dana/dox/altgen.html
 Lily Ovary
 https://www4.uwsp.edu/biology/courses/botlab/Lab24d.htm
 Onion Stem
 https://en.wikipedia.org/wiki/Plant_stem_cell