Transcript
PRESENTATION OF BIOLOGY
By :Aridlah Sendy R. Meta Rona I. Wia Bunga R. Liya Sabila B.S.
Kingdom plantae
The kingdom plantae is distuinguished into two parts
a.Plants which have no vascular t issue (Mosses)
b.Plants which have vascular t issue (Pteridophyta)
Based on the carrying vessels, the kingdom plantae is devided into two, they are:
• Plants which have no vascular tissues
Ex. Bryophyta
- Live in humid or wet places
1. Characteristics of Mossesa. Have a structure which is almost like the
root,stem and leaf but they are not the real root,stem and leaf.
b. Have no vascular tissues.c. The body size is relatively small,about 15
cm.d. Live in humid or wet places.e. They experience alternation between
sexual reproduction by producing sexual cells (gametes) and vegetative reproducting phase by making spores
Plants with vascular tissues
- The leaves are green because they have chlorophyl so they are autotrophic. The young leaves rool
- Ex. Pteridophyta
Classification on ferns• Division psilophyta• Division lycophyta• Division Sphenophyta• Division pterophyta
2)seed plants a.Open seed plants (Gymnospermae) Gymnospermae are the plants whose seeds are not
covered by seed leaves or cotyledons so they are readily visible.
Gymnospermae are divided into several orders: Order Cycadales, Order Gnetales, Order Coniferales
b)Closed seed plants Based on the numbers of cotyledons,angiosperms
are distinguished into two classes,they are class monocotyledons and class dicotyledons
Monocotyledons
• Have seeds with an embryo having one cotyledons.
• Have fibrous roots.
Ex. Gramineae , Palmae , Musaceae, orchidaceae, and Zingiberaceae.
a. Gramineae (Grass Family)• Have fibrous rootsb. Palmae• Have fibrous rootsc. Musaceae (Family of bananas)• Reproduce by buddingd. Orchidaceae (Family of orchids)• The leaves are fleshy, with even edge, and
are arranged alternately in two rows.e. Zingiberaceae (Family of Spice Plants)• Have leaf sheaths covering the stem
Dicotyledons• The main
characteristic is that they seeds with two cotyledons• Have tap roots• Ex. Euphorbiaceae,
Papilionaceae, Solanaceae, Myrtaceae, and Caesalpinaceae.
a. Euphorbiaceae (Sap-producing Plants/ Euphorbiaceae• If the body part is hurt, it will excrete white resin (milk resin)b. Papilionaceae (Family of beans)• The leaves are simple, pinnately arranged• The fruit is leguminousc. Solanaceae (Family of eggplants)• The fruit is a valved fruitd. Myrtaceae• Most of them are herbs, but some are woodye. Caesalpinaceae• They grow as trees or herbs.• The leaf has single leaflet or double leaflets• The sepals are loose
• Mosses are divided into three classes,liverworts,hornworts,and true mosses
Ferns are divided into 4 divisions,they are: division psilophyta ,division lycophyta ,division sphenophyta,and divisi pterophyta
1)Characteristics of mosses a.Have no vascular tissue so the transportation of water and mineral salt is done from cell to cell slowly c.The body size is relatively small,about 15 cmd.Live in humid or wet places.
2.Characteristics of ferns a.Commonly ,their stem is a rizoma which is
planted undergroup ,very short and sagmented .saveral kinds of frens can reach 5 m tall ,for exsample pole ferns and “pakis”.its stem sometimes branches and has xylem and pholem.
b.The leaves are green because they have chlorophyl so they are autotropic.the young leaves rool.exsample:Tropophyl and sporophyl.
The same example of Kingdom Plantae
The same example of Kingdom Plantae
Any Question So Far?
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