Unit A A Diversity of Life Notes
- Scientific Method
- Observe
- Ask a question to be answered through the process
- Hypothesis an educated guess
- Test the question
- Change the variables and test again
- Record the results of each test
- Conclusion
- Should answer your hypothesis
- Ask another question
- Plants
- Vascular
- A plant with vessels
- Xylem carries the minerals and food up the vessel to the leaves
- Cambium separates the xylem and phloem
- Phloem carries the food and water to the other parts of the plant
- Nonvascular
- Doesn’t have vessels or veins
- Cells
- Chloroplast
- Chlorophyll
- Cell wall
- Nucleus
- Mitochondria
- Vacuoles
- Cell membrane
- cytoplasm
- Gymnosperm
- A male plant without flowers
- Doesn’t produce fruits
- Usually evergreens
- Angiosperms
- Female plant that produces flowers
- Produces fruits
- Roots
- Prop such as corn
- Ariel never touches the ground-rain forests
- Fibrous thin stalks usually on top of ground
- Taproots single main root potato, carrot, onion, beet
- Photosynthesis
- Process of making food
- Uses sunlight, water and carbon dioxide
- Made in the plants leaves
- Makes sugar and oxygen
- Transpiration
- 99% of water is loss through the leaves in this process
- The stomata opens on bottom side of leaf and water escapes
- Animals
- Vertebrate
- An animal with a backbone
- Humans, frogs
- Nonvertebrate
- Animal without a backbone
- Spider, butterflies, housefly
- Asymmetrical body
- Can’t be divided into mirror images
- Radial Symmetry
- All body parts arranged round central point
- Bilateral
- Produces 2 mirror images
- Cells
- Nucleus-control center of the cell
- Vacuoles-stores the food
- Cytoplasm-jelly like substance that protects
- Cell membrane-protects everything inside the cell
- Mitochondria-makes the food
- Smallest living thing that carries out life’s processes
- Organisms
- All living things(plants and animals
- Life’s Processes
- Reproduce
- Get rid of waste
- Breathing through the lungs
- Sweating
- Get rid of waste through kidneys
- Grow or adapt to the environment
- Eat, drink, breathe
- Multicellular
- Made up of more than one cell
- Human Body Systems all work together to function
- Skeletal
- Bones
- Tendons
- Ligaments
- Protect the organs in our body
- Heart, kidneys, brain, lungs, liver, intestines
- Muscular
- Power to produce movement
- Voluntary
- You tell your body to do it
- Pick up something
- Jump
- Walk
- Run
- Talk
- Involuntary
- Your body does it automatically
- Breathe
- Heart beats
- Pumps blood
- Blink
- Feel emotions
- Grow
- Digestive system
- In the long tube food is broken down
- Into nutrients to be used
- Stomach
- Esophagus
- Excretory System
- Removes waste from the body
- Get rid of waste
- Breathing through the lungs
- Sweating
- Get rid of waste through kidneys
- Respiratory System
- Provides oxygen and food to the cells
- Through breathing in the lungs
- Circulatory system
- Consists of the heart and blood vessels
- Circulates blood throughout the body
- Nervous system
- Sense organs
- Nerves
- Nerve cord, spine backbone
- Brain
- Sends messages to each part
iv. Endocrine System
glands that produce hormones(chemicals) released into the bloodstream that changes body activity in females and males
deep voices
hair on the arms, arm pits, legs and other parts of the body
female parts
male parts
- Fungus Kingdom
- Gets it food from other organisms
- Mold, mushrooms, yeast
- Protist Kingdom
- Unicellular organisms
- One celled
Unit A Diversity of Life Chapter 2 pg. 86
Experiments pgs. 89, 90, 113, 120, 127, 128
- Reproduction pg. 88
- Sexual Reproduction
- Production of a new organism from two parents
- Fertilization
- Sexual Reproduction
- Male provides sperm
- Female provides egg
- Join together
- Characteristics/traits of both parents are inherited by the new individual
- Height, eye color, flower color, nose shape, ears
- External Fertilization
- Joining of sperm and egg outside of body
- Internal fertilization
- Joining of sperm and egg inside the body
- Asexual Reproduction
- Production of a new organism for one parent
- There is no male and female sex cells
- Identical to parent
Bacteria, unicellular protest, fungi, jellyfish, worms, corals, lizards, frogs, fish and insects (some)
- Plant Life Cycles pg. 98
- Life Cycle
- Series of different stages of development
- Alternation of Generation
- Alternating between asexual and sexual reproduction
- Spores
- Cells that develop into new plants w/o fertilization
- Parts of a flower pg. 102
- Complete flower consists of
- Petals,
- Brightly colored outer parts of flower
- Sepals
- Green parts found below petals
- Stamen
- Male part of flower
- Pistil
- Center part of flower is female organ
- Anther
- Top of filament which contains sperm cells made by pollen grains
- Stigma
- Opening at top of the pistil
- Ovary
- Houses the egg cells
- Fertilization occurs here
- Incomplete flower
- Missing 1 or more of the parts
- Perfect flower
- Has both stamen( male) and pistil (female) parts
j. imperfect flower
i. Is missing a stamen(male) or pistil (female)
ii. it is either a male or female plant only
- Pollination
- Transfer of pollen from the stamen (male) to pistil (female)
- Pollen
- Yellow powder that contains sperm cells
- Nectar
- Sweet liquid produced by flowers to attract pollinators
- Self-pollination
- Perfect flower both stamen(male) & pistil (female) pollinates itself
- Cross-pollination
- Pollen from 1 plant pollinates flower on another plant
- Seed
- Embryo
- Beginning of a new offspring
- Becomes a fruit
- Seed coat
- Entire seed surrounded by a tough outer covering
- Germination
- Development of seed into new plant
- Conifer
- Gymnosperm
- Has seeds but no flowers
- Evergreens like pines, firs, cedars, redwoods
- Cone bearing trees
- Animal Life cycles pg. 112
- Metamorphosis
- Series of distinct growth stages different from one another
- Complete Metamorphosis
- egg
- Larva
- Immature stage –doesn’t look like its adult at all
- Pupa-cocoon surrounds organism nonfeeding stage
Iv. Adult
- Incomplete Metamorphosis-only 3 stages
- Nymph
- Lacks wings and reproductive structures
- Similar to an adult
- Traits and Heredity pg. 122
- Heredity
- Passing down of traits from parents to offspring
- Inherited
- Trait received from parents
- Dimples, facial features, hair/eye color, way you laugh
- Instinct
- Way of acting or behaving that animals are born with
- Spider spinning web, how to breathe, build nests
- Learned behavior
- Developed over time
- Dog learning to sit, bark, fetch
- Imprinting
- Animal forms a social bond w/ other organisms
- Gene
- Chemical instructions for inherited traits
- Stored on structures(chromosomes)
- Dominant trait
- Dominates or masks other traits
- Recessive trait
- trait that is hidden or masked by another trait