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Biology!
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61
Biology
9th Grade
11/27/2012

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Term
Anther
Definition
The Site Of Pollen Production
Term
Asexual reproduction
Definition
production of plants from a parent plant without the
production of gametes
Term
Carbohydrate
Definition
compound containing carbon, hydrogen and oxygen
Term
Cellulose
Definition
carbohydrate used to make cell walls
Term
Chlorophyll
Definition
green pigment which absorbs light
Term
Cutting
Definition
part of a plant from which a new plant can be grown
Term
Embryo plant
Definition
young plant found inside seed
Term
Epidermis
Definition
outer layer of cells
Term
Gametes
Definition
Male or female sex cells
Term
Germination
Definition
first stages of growth from a seed
Term
Guard cells
Definition
pair of cells surrounding a stomatal pore
Term
Limiting factor
Definition
an environmental factor which effects the rate of
photosynthesis
Term
Nectary
Definition
area at the base of a flower where a sugary liquid is
produced
Term
Ovary
Definition
part of a flower where the ovules are produced
Term
Palisade mesophyll
Definition
layer of cells in a leaf where most photosynthesis takes place
Term
Photosynthesis
Definition
conversion of light energy into chemical energy
Term
Pollen tube
Definition
tube which grows from the stigma into the ovary
Term
Pollination
Definition
Pollination
Term
Runner
Definition
a side stem from which new plants grow
Term
Seed dispersal
Definition
scattering the seeds away from the parent plant
Term
Sepal
Definition
structure which forms the bud to protect the developing
flower
Term
Spongy mesophyll
Definition
loosely packed cells forming the middle layer in a leaf
Term
Stamen
Definition
male part of a flower made up of anther and stalk
Term
Stigma
Definition
female part of flower where pollen is deposited
Term
Stomatal pore
Definition
opening on the surface of a leaf through which gases pass in
and out
Term
Phloem vessel
Definition
cell used for the transport of food
Term
Vein
Definition
group of xylem and phloem vessels running through a plant
Term
Xylem vessel
Definition
dead cell used for the transport of water
Term
Aerobic respiration
Definition
chemical reaction to release energy which requires oxygen and produces carbon dioxide
Term
Amylase
Definition
speeds up the break down of starch
Term
Catalase
Definition
an enzyme which speeds up the breakdown of hydrogen peroxide
Term
Catalyst
Definition
a substance which speeds up a reaction but remains unchanged
Term
Cell wall
Definition
cellulose layer around the outside of a plant cell
Term
Chloroplast
Definition
tructure within a plant cell which contains chlorophyll
Term
Chromatid
Definition
identical copy produced when chromosomes double
Term
Chromosome
Definition
thread like structure made up of several genes
Term
Cytoplasm
Definition
the fluid part of a cell
Term
Denatured
Definition
permanent damage caused to an enzyme by high temperature
Term
Diffusion
Definition
movement of molecules from high to low concentration
Term
Enzyme
Definition
chemical found in living cells which acts as a catalyst
Term
(Cell) Membrane
Definition
semi-permeable layer surrounding the cytoplasm in all cells
Term
Metabolism
Definition
all of the chemical activity taking place within an organism
Term
Mitosis
Definition
cell division which produces two identical cells
Term
Osmosis
Definition
diffusion of water molecules across a semi- permeable membrane
Term
Spindle
Definition
fibrous structure which pulls chromosomes apart
Term
Vacuole
Definition
cavity in the cytoplasm of a plant cell
Term
Amino acid
Definition
Basic unit of protein molecule
Term
Amnotic sac
Definition
Membrane surrounding the developing foetus
Term
Collecting duct
Definition
Tube which takes urine from the tubules to the ureter
Term
Fat
Definition
Carbon , Hydrogen And Oxyen
Term
Glomerulus
Definition
Knot of capillary blood vessels
Term
Lacteal
Definition
Small lymph vessel in the villus which absorbs the products of fat digestion
Term
Lipase
Definition
An enzyme which breaks down fat into fatty acid and glycerol
Term
Oviduct
Definition
ube which carries the ova; site of fertilisation
Term
Peristalsis
Definition
Muscular contractions which move food through the intestines
Term
Renal artery
Definition
Blood vessel carrying blood TO the kidney
Term
Renal vein
Definition
Blood vessel carrying blood AWAY FROM the kidney
Term
Urea
Definition
Waste product from the breakdown of amino acids
Term
Villus
Definition
finger-like fold in the wall of the small intestine
Term
Zygote
Definition
Fertilised egg
Term
Yolk sac
Definition
food store
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