Ancestor & alternation
Who is the ancestor of plants?
Algae!
What is the name of the structure of plants, fungi or algae that produces and contains spores?
Sporangia!
Which ones were the first vascular plants?
Filicinophyta!
Angiosperms: Dicots!
How many cotyledons do Dicots have?
Dicots have two cotyledons.
True or false: Gametophytes are multicellular haploid plants capable of creating gametes.
True!
True or false: Sporangia is the organ or cell in which gametes are produced.
False! Gametangia is the organ or cell in which gametes are produced.
Which are known as the "fern allies", that are a clade of vascular plants similar to ferns but have unique leaves called microphylls?
Lycophytes!
Which one represents approximately 80% of all the green plants: Gymnosperm or Angiospermophyta?
Angiospermophyta!
True or False: In dicots, floral organs can be found in multiples of 3.
False! They can be found in multiples of 4 or 5.
Monocots are the ones that have floral organs in multiples of 3.
State 3 characteristics of the ancestor of plants.
Photosynthetic organisms
Unicellular or multicellular organisms.
Lack of structure (roots, stems and leaves).
Needs an adequate moisture.
Reproduction: asexual and sexual forms.
Free-living.
It's the growth region in root tips and the tips of the new shoots and leaves.
State 3 Byrophyte characteristics.
Non-vascular land plants, exhibit specialized structures for water transportation, devoid of vascular tissue, able to survive in environments that vascular plants cannot, contain chlorophyll, have rhizoids, dominant gametophyte stage...
What are the parts in which a Gymnosperm vascular system consist of?
Xylem and Pholem.
Describe the difference in roots between Monocots and Dicots.
Monocots have fibrous roots, while dicots have a main root (taproot) and smaller ones that branch off it.
How do Sporophytes create spores?
Through meiotic division!
Where is Gametangia present in?
It's present in: multicellular protists, algae, fungi, and the gametophytes of plants.
What are the three types of non-vascular land plants?
Mosses, hornworts, and liverworts.
How does a Gymnosperm reproduce?
It reproduces by an exposed seed or ovule.
Describe the difference in stem vascularization between Monocots and Dicots.
Monocots have vascular bundles (conducting vessels) scattered, while dicots form a ring structure.
It's a type of life cycle in which subsequent generations of individuals alternate between haploid and diploid organisms.
It carries out the meiosis that will give the haploid spores.
How is the reproduction of ferns (Filicinophyta)?
Reproduction is by means of spores borne on the underside of specialized leaves (sporophylls).
State 2 characteristics of Gymnosperm and 2 characteristics of Angiospermophyta?
Gymnosperm: ex: Do not produce flowers; have exposed seeds; found in colder regions; needle-like leaves; form cones with reproductive structures; between others...
Angiospermophyta: ex: Ability to flower and produce fruits; able to grow in a variety of habitats; distinctive underground roots and aerial shoot system; very well-developed conducting tissues; roots contain cortex, phloem. xylem, and epidermis; between others...
Name the 6 characteristics or features that determine the differences between Monocots and Dicots.
Cotyledons (“seed leaves”) leaf veins, roots, floral organs, stem vascularisation and pollen.