WSU BIO 106 EXAM 2, RITCHIE, KEY
TERMS QUESTIONS & VALID PASSED
ANSWERS
Flower: - Correct Answer ✔✔ A specialized terminal shoot with modified leaves
Sepal: - Correct Answer ✔✔ Encloses the flower
Petals: - Correct Answer ✔✔ brightly colored and attract pollinators
Stamens: - Correct Answer ✔✔ Produce pollen
Carpels: - Correct Answer ✔✔ produce ovules
Receptacle: - Correct Answer ✔✔ Where all flower parts are attached to
Style: - Correct Answer ✔✔ Slender neck that connects the ovary with the stigma
Stigma: - Correct Answer ✔✔ Sticky structure that captures pollen
Haploid: - Correct Answer ✔✔ 1 copy of each chromosome
Diploid: - Correct Answer ✔✔ 2 sets of chromosomes
Ploidy: - Correct Answer ✔✔ number of sets of chromosomes in a cell
gametophyte - Correct Answer ✔✔ Haploid, or gamete-producing, phase of an
organism
Synergids: - Correct Answer ✔✔ the two haploid nuclei in the embryo sac of seed
plants that are closely associated with the egg cell and recruit the pollen tube to the egg
sac with hormones
Zygote: - Correct Answer ✔✔ a diploid cell resulting from the fusion of two haploid
gametes; a fertilized ovum.
Charophytes: - Correct Answer ✔✔ green algae that are the closest relatives of land
plants
4 key traits in nearly all land plants (absent in Charophytes). - Correct Answer ✔✔ 1.
Apical Meristem
2. Walled spores produced in sporangia
, 3. Multicellular, dependent embryos
4. Alteration of generations
When were plants seen on land? - Correct Answer ✔✔ 475 million years ago
3 major groups that don't have xylem and phloem - Correct Answer ✔✔ 1. Mosses
2. Liverworts
3. Hornworts
Bryophtyes: (characteristics?) - Correct Answer ✔✔ non-vascular plants
- small
- Herbaceous
- Rhizoids
- Gametophyte
Rhizoids: - Correct Answer ✔✔ Root like structure with no absorptive function
Sporophytes: - Correct Answer ✔✔ a spore-producing diploid plant
Seedless vascular plants form two groups: - Correct Answer ✔✔ Lycophytes
Monilophytes
Lycophytes: - Correct Answer ✔✔ Have microphylls
small herbaceous plants
Including club mosses, spkie mosses, and quilworts
Monilophytes: - Correct Answer ✔✔ Ferns are more abundant seedless vascular plants
over 10,000 different species
megaphylls
Including ferns, horssetail, and whisk ferns and their relatives
Key enovations of early plants - Correct Answer ✔✔ -Seeds
-Reduce gameophtyes
-Ovules - protection of gameotypes
-Pollen - Allows transport outside of moist environment
Ovule: - Correct Answer ✔✔ Sporophyte tissue that produces the female gameophyte
Each seed consists of... - Correct Answer ✔✔ 1. Embryo
2. food reserve
3. wrapped in a protective coat
Gymnosperms: - Correct Answer ✔✔ Naked seeds
TERMS QUESTIONS & VALID PASSED
ANSWERS
Flower: - Correct Answer ✔✔ A specialized terminal shoot with modified leaves
Sepal: - Correct Answer ✔✔ Encloses the flower
Petals: - Correct Answer ✔✔ brightly colored and attract pollinators
Stamens: - Correct Answer ✔✔ Produce pollen
Carpels: - Correct Answer ✔✔ produce ovules
Receptacle: - Correct Answer ✔✔ Where all flower parts are attached to
Style: - Correct Answer ✔✔ Slender neck that connects the ovary with the stigma
Stigma: - Correct Answer ✔✔ Sticky structure that captures pollen
Haploid: - Correct Answer ✔✔ 1 copy of each chromosome
Diploid: - Correct Answer ✔✔ 2 sets of chromosomes
Ploidy: - Correct Answer ✔✔ number of sets of chromosomes in a cell
gametophyte - Correct Answer ✔✔ Haploid, or gamete-producing, phase of an
organism
Synergids: - Correct Answer ✔✔ the two haploid nuclei in the embryo sac of seed
plants that are closely associated with the egg cell and recruit the pollen tube to the egg
sac with hormones
Zygote: - Correct Answer ✔✔ a diploid cell resulting from the fusion of two haploid
gametes; a fertilized ovum.
Charophytes: - Correct Answer ✔✔ green algae that are the closest relatives of land
plants
4 key traits in nearly all land plants (absent in Charophytes). - Correct Answer ✔✔ 1.
Apical Meristem
2. Walled spores produced in sporangia
, 3. Multicellular, dependent embryos
4. Alteration of generations
When were plants seen on land? - Correct Answer ✔✔ 475 million years ago
3 major groups that don't have xylem and phloem - Correct Answer ✔✔ 1. Mosses
2. Liverworts
3. Hornworts
Bryophtyes: (characteristics?) - Correct Answer ✔✔ non-vascular plants
- small
- Herbaceous
- Rhizoids
- Gametophyte
Rhizoids: - Correct Answer ✔✔ Root like structure with no absorptive function
Sporophytes: - Correct Answer ✔✔ a spore-producing diploid plant
Seedless vascular plants form two groups: - Correct Answer ✔✔ Lycophytes
Monilophytes
Lycophytes: - Correct Answer ✔✔ Have microphylls
small herbaceous plants
Including club mosses, spkie mosses, and quilworts
Monilophytes: - Correct Answer ✔✔ Ferns are more abundant seedless vascular plants
over 10,000 different species
megaphylls
Including ferns, horssetail, and whisk ferns and their relatives
Key enovations of early plants - Correct Answer ✔✔ -Seeds
-Reduce gameophtyes
-Ovules - protection of gameotypes
-Pollen - Allows transport outside of moist environment
Ovule: - Correct Answer ✔✔ Sporophyte tissue that produces the female gameophyte
Each seed consists of... - Correct Answer ✔✔ 1. Embryo
2. food reserve
3. wrapped in a protective coat
Gymnosperms: - Correct Answer ✔✔ Naked seeds
