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T#4 Grow & Repr
This stack includes both terms/defs AND "target practice" with images.
Term | Definition |
---|---|
growth | when an organism increases in size either by making its cell bigger or by making more cells |
development | when an organism gains new abilities or physical features as it ages |
reproduction | when an organism makes more of its kind ('has babies') |
sexual | adjective to describe reproduction with two parents - each parent contributes half of the genetic material to the offspring |
sperm | male reproductive cell |
egg | female reproductive cell |
fertilization | when sperm and egg combine to form offspring |
zygote | name for the fertilized egg when it is still just a single cell |
asexual | adjective to describe reproduction with only one parent |
regeneration | asexual reproduction to replace damaged or lost cells, tissues, or organs in a multicellular organism |
budding | asexual reproduction when the offspring grows from the body of the single multicellular organism |
offspring | science name for the 'babies' or 'children' of a parent |
cell division | process a cell goes through to split its cellular contents in half and then separate into two cells |
DNA | molecule (located in the nucleus) that contains the instructions for how to make an organism; also called genetic material |
genetic variation | differences in DNA when comparing one organism to another |
unique | adjective to describe how an organism is 'one of a kind,' genetically speaking |
identical | adjective to describe how an organism is an 'exact copy,' genetically speaking |
reproductive behavior | actions an animal does to increase its chances of successfully finding a mate, mating, or raising offspring |
reproductive strategy | adaptations a plant has that increase its chances of successfully getting pollinated or making sure its seeds will make it to germination |
reproductive success | when an organism makes offspring that end up having offspring of their own |
germination | process where a seed comes out of dormancy and begins to grow to become a young plant |
quantify | when you count something or describe it with numbers |
measure | when you quantify using a tool that counts in standard units |
units | what you count by when you measure a certain quantity |
metric system | the way measurement is done everywhere in the world (except the United States) using grams, meters, and liters…all using decimals and powers of ten |
English system | the way measurement is done in the United States using pounds, feet, gallons, etc. |
cotyledon | ‘seed leaf,’ the biggest part of a seed which provides energy for the young plant until it can make its own food by doing photosynthesis |
seed coat | protective outer covering of a seed before it germinates |
radicle | the first root put out by a germinating seed |
fission | asexual reproduction when bacteria split into two daughter cells |