iCEV Plant Science Part 1 Flashcards
specialized part of a cell which has a specific function
organelle
adenosine triphosphate, the molecule which provides the energy in the cells of all living things
ATP
structure of nucleic acids and proteins which carries genetic information in the form of genes
chromosome
proteins which assist chemical reactions in living cells
enzymes
flowering plants with two seed cotyledons
dicotyledons (dicot)
trees which bear cones and need-like or scale-like leaves
confiers
flowering plants with only one seed cotyledon
monocots
mature male or female sex cell which is able to unite with another of the opposite sex in sexual reproduction
gamete
embryos with two cotyledons
dicots
a group of plants which are selected for desirable traits and are maintained through propagation
cultivar
short, fleshy undergrounds stem which is enlarged to store nutrients
tuber
process of converting light energy to chemical energy and storing it as food
photosynthesis
evaporation of water into the atmosphere from the stems and leaves of plants
transpiration
study of the movement, distribution and quality of water on Earth
hydrology
study of Earth’s physical structure and substance
geology
strand of conducting vessels in the stems or leaves of plants
vascular bundles
thickening of roots and stems by cell division in the vascular cambium
secondary growth
part of the plant embryo which develops from the primary root
radicle
diploid stage in the life cycle of plants which produces haploid spores through meiosis
sporophyte stage
haploid stage in the life cycle of plants which produces haploid gametes through mitosis
gametophyte
large strengthened vein on the midline of a leaf
midrib
stalk which joins a leaf and stem
petiole
plants develop adaptive phenotypic characteristics due to changes in the environment
Phenotypic plasticity
person or people who determined the name for a plant
authority
thin layer of delicate tissue separating the xylem and phloem which induces secondary growth
vascular cambium
end wall which is perforated with pores
sieve plate
chemical product of photsynthesis
photosynthate
series of openings which facilitate gas exchange between inner parts of plant organs
stomata
process of converting light energy to chemical energy and storing it in the bonds of sugar
photosynthesis
ordered set of events resultin gin cell growth and division into two daughter cells
The Cell Cycle
phase of the cell cycle in which a cell spends the majority of its time and performs most of its normal functions in preparation for cell division
interphase
also knows as G1 phase; phase in which the cells grows, carries out protein synthesis and performs other cellular functions
Gap 1 Phase
also known as S phase; phase in which th ecell replicates its DNA
synthesis phase
also known as G2 phase; growth phase which allows cells to continue to carry out normal functions and continue growing
Gap 2 phase
also known as M phase; process by which new cells are created and results in two daughter nuclei, each with genetic material identical to each other and the mother cell
mitosis
first stage of mitosis
prophase
single piece of coiled DNA which contains many genes, regulatory elements and other nucleotide sequences
chromosome
area in the cell where microtubules are produced
centrosome
fibers which form during mitosis and segregate chromosomes between daughter cells during cell division
mitotic spindle
one copy of a duplicated chromosome which is usually joined to the other copy by a centromere
chromatid