grade 5 lessons on science

SCIENCE

VERTEBRATES

Have back bones FISHES -Aquatic animals wich move using fins

and breath through gills Examples: Bony and cartilaginous fishes Amphibians -Animals with well developed lungs that

can live both land and in water Examples: frogs,toads, and others

VERTEBRATES

Reptiles -Cold-blooded animals with dry and

scaly skin Example: Snakes, crocodiles, and

others Birds -Animals with feathers and beaks Examples: birds, and fowls

VERTEBRATES

Mammals -Animals covered with hair and skin Examples: cattle, primates and others

INVERTEBRATES

Poriferans Ocean dwelling with perforated bodies Examples: Sponges Cnidarians Animals with stinging tentacles Worms Animals with elongated bodies that

are flat Examples: roundworms

INVERTEBRATES

MOLLUSKS Soft bodied animals covered by shells. Example: Snails, tahong, octupuses and

squids ARTHROPODS Jointed leg animals Examples: butterflies, dragonflies ECHINODERMS Spiny skinned animals Examples: Sea stars, sea urchins.

ENDANGERED ANIMALS

Extinct A species of a plant or animal that is no

longer living Examples: Dinosaur Endangered A species that is in imediate danger of

becoming extinct and needs protection to survive

Examples: Tarsier, Elephant(tusks) ,Eagle

ENDANGERED ANIMALS Threatened A species is like to become endangered if it is not

protected

Ways that Species become endangered: Habitat loss Illegal killing Competition with other species Disease Predation Pesticides, pollution

6 animal kingdoms

Kingdom Eubacteria Includes true bacteria and blue green algae Called prokaryotes Reproduce asexually Kingdom archaebacteria Prokaryotes They are biochemistry and genetic compositions Kingdom protista Eukaryotes Reproduce either sexually and asexually

6 animal kingdoms Kingdom Plantae Multicellular eukaryotic organism Autotrophs Have clorophyll Kingdom fungi Saprophytic(most) Predatory(others) Sybionts(others) Reproduce sexually and asexually Cell wall contains chitin Multicellular eukaryotic organism

6 animal kingdom

Kingdom animal Multicellular eukaryotic organism Without cellwalls and chlorophyll Hetrotrophs Most have body systems Biggest kingdom 9-10 million species

Plant cell

Green Less parts Central

Vacuoles Square like Chlorophyll Have cell

wall

Animal cell

Brown/red More parts Small

vacuoles No chlorophyll No cell wall

Tropism

Phototropism Light

Thigmotropism Touch or contact

Thermotropism heat

Tropism

Hydrotropism Water

Chemotropism Chemical

stimuli

Geotropism Gravity

Gymnosperms

Phylum Coniferophyta Called conifers Needle leaves Most of the evergreen trees Phylum Cycadophyta Called cycads Palm like leaves Evergreen trees and shrubs Lives in tropics

Gymnosperms

Phylum Ginkgophyta Called ginkgos Gymnosperm shrub or vine with some

angiosperms characteristics Phylum Gnetophyta Called Gnetales

Angiosperms

Class Monocotolydon Embryo with 1 seed leaf Parralel in leaf veins Flower parts in 3 Vascular bundles

scattered randomly

Angiosperms

Class Dicotyledon Embryo with 2 seed leaves Leaf veins in a net-like

pattern Flower parts in 4 or 5 Vascular bundles in a ring

pattern

SEEDLESS PLANTS

Mosses and liverworts Small Live in bark, rocks and soil No vascular system Must live in wet places No true roots, stems or leaves Live together in large groups Covering soil or rocks Has rhizods

Importance of mosses and liverworts The 1st plants to inhabit Form a thin layer of soil when they die Help prevents soil erosion

Seedless Plants

Ferns Can grow almost everywhere Have an undergroung stem

Horsetails Small vascular plants Grow less than 1.3 m tall Grow in wet, marshy places Stems are hollow and contain cilia Pioneers use them to scrub pots and pans

Seedless plants

Club mosses 25 cm tall Grow in woodlands Unlike other mosses they have vascular

tissues

The end