classification of living things Flashcards
define movement
action which cause organism or part of organisms causing change of positions or place
define respiration
chemical reactions in cell that breakdown nutrient molecules to release energy for metabolism
what is the meaning of sensitivity
ability to detect and respond appropriately to internal and external environment
what is the meaning of growth
permanent increases in size and mass by an increases of cell size or number or both
define reproduction
process which makes more of the same kind of organism
define excretion
removal of unwanted waste products of metabolism ( chemical reaction in cells including respiration), toxic materials and substances in excess required
what is nutrition
taking in materials for energy, growth and development
define the meaning of species
a group of organisms that can reproduce to produce fertile offspring
why do we need to classify living things?
its easier to study them
understand evolutionary rs
identify which animal is at risk of extinction
what are the 3 ways to classify
- anatomy - detailed body structure
morphology - overall body shape and structure
DNA (sequence of bases) and protein (sequence of amino acid)
what is the binomial systen
its the naming system using the genus and the species created by Carls Linnaeus
why is the binomial system good/ useful
allows scientist to accurately identify species and avoid confusion when diff languages is used
which is the genus and species of canis lupus
canis is the genus and lupus is the species
name the 5 kingdoms
animal, plantae, fungi, prokaryotes and protoctista
name the characteristic of the animal kingdom
animal- no cell wall or chloroplast , nucleus, hunt, multicellular, ingest food internally
list the characteristics of plantae kingdom
multicellular, has nucleus and cell wall made of cellulose, chloroplast and makes owns food
name the characteristics of fungus
hyphae, cell wall of chitin, no chloroplast and has nucleus
list the characteristics of prokaryotes
small single cell, no nucleus, cell wall of protein sugar and lipid , cell membrane & cytoplasm with granules, DNA in single coiled form, slime capsule and flagella for movement
list the characteristics of protoctista
multi or uni cellular, single cell, nucleus, may hv cell wall and chloroplast
name the characteristics of annelids
elongated cylindrical shape, segmented body, brittles or chaetae
characteristics of molluscs
hard shell made of calcium carbonate
muscular foot and eyes on tentacles
characteristic of nematodes
usually parasitic, elongated cylindrical body with pointed ends
name the characteristics of arthropods
has exoskeleton, segmented bodies and jointed limbs
what are the characteristics of crustacean
5 or more pairs of joined legs, hard exoskeleton, body divided into 2 and 2 pairs of antennas
what are insects
3 pair of legs, 2 pairs of wings and 1 pair of antenna
what are archnids
8 legs, several simple eyes, body divided into 2 , no antenna
LAST ONE WHAT IS MYRIAPODS
10 or more pairs pf legs, 1 pair of antennae, simple eyes and segmented body
corda is also known as
phylum vertebrates
what is the difference between monocotyledon and dicotyledon
mono- one cotyledon, parallel veins, fibrous roots, leaves are thin and narrow, floral part in 3s and vascular bundle complex
di- 2 cotyledon, network veins, tap roots, floral parts in 4s or 5s , leaves are broad and wide and vascular bundles ring
explain angiosperms
root, stem leaves
flowers for reproduction, seeds inside fruits and cellulose cell wall
describe the characteristics of ferns
true roots, stems , leaves and vascular tissues, reproduces by spores, lives in damp places, rhizomes and adventitious root
describe the characteristics of moss
uni or multi cellular, no roots, stems or leaves, photosynthesis pigments, lives near water
what is the characteristics of algae
simple leaves and stems
has rhizoids for anchorage and absorption of water, no vascular tissues and needle life leaves
what is gymnosperms
reproduce by seeds - cones and needle like leaves
how does fungus eat food
they produce an enzyme which help digest food and then they absorb them
hyphae forms a network called
mycelium
where does fungus produce spores
inside sporangium
what does protoctista use for locomotion
flagella, cilia and pseudopodia
how does bacteria feed and respire
feed- photosynthesis or live on food
respiration - anerobic
what are the benefits and disadvantages of prokaryotes
decomposers, help with digestion
pathogens
what are the characteristics of virus
very very very small, no typical structure, needs a host to survive, has a protein coat called capsids, contains DNA/RNA strains , only life process is reproduction and constantly changes/ mutate
