### plant:

Embryo
* All embryos begin as a single-celled zygote that has been formed by the fusion of the gametes
  - life looking very much the same, as far as outward appearances are concerned
* All embryos have a neurohypophysis with an infundibulum
  - an infundibular recess extending into the neurohypophysis
  - seem arrested early but without multiple nuclei
  - start out as female
* Many embryos develop in close association with a parent.
* Most embryos absorb nutrients
  - acquire nutrition
  - adapt to conditions
* Most embryos become blastocysts
  - cell blastocysts
  - children
  - disable children
  - fetuses
  - healthy blastocysts
  - immature individuals
  - derive nourishment
  - develop features
* Most embryos develop into adults
  - kidneys
  - muscular organs
* Most embryos develop over long periods
  - months
  - saclike organs
* Most embryos develop within ovules
  - single ovules
* Most embryos enter dormancy
  - dormant states
  - next stages
* Most embryos get nourishment
* Most embryos go through evolutionary stages
  - larval stages
* Most embryos go through various evolutionary stages
* Most embryos grow in cavities
  - chest cavities
  - have activities
* Most embryos have cell layers
  - mass
  - chances
  - functions
  - immune functions
  - materials
  - sacs
  - structures
  - yolks
* Most embryos obtain nourishment
  - perish, passing through the womb without attaching to the uterine wall
  - possess cotyledons
  - produce enzymes
  - reach uteruses
* Most embryos receive care
  - parental care
  - prolong parental care
* Most embryos remain in dormant states
* Most embryos require embryo growth
  - oxygen
  - respond to vibration
  - show differentiations
* Most embryos survive conditions
  - pregnancy
  - tough conditions
* Most embryos undergo cell division
  - cleavage division
  - development
  - multiple cell division
  - rapid cell division
* Some embryos absorb secretion
* Some embryos become seeds
  - sporophytes
  - come into existence
  - consist of cotyledons
* Some embryos develop dormancy
  - forelimbs
* Some embryos develop into caterpillars
  - ciliate larvae
  - coral larvae
  - corn plants
  - diploid plants
  - feed larvae
  - mature sporophytes
  - second stage larvae
  - swim larvae
  - tadpoles
  - over summer
  - within seeds
  - follow patterns
  - form ovaries
  - germinate from seeds
  - grow in springs
* Some embryos grow into sporophytes
  - trees
  - starches
* Some embryos have abnormalities
  - concentration
  - domains
  - equal opportunity
  - gills
  - other organs
  - potential
* Some embryos obtain air
* Some embryos produce hormones
  - testosterone
  - store food
* Some embryos survive for many years
  - in labs
  - use straw
* absorbs water, swells, bursts open seed coat.
* appear to be resistant to infection until they hatch from the zona pellucida.
* are a red-orange color
  - rich but controversial source of stem cells
  - alive
  - amenable to a wide range of manipulations of their tissues, cells and molecules
  - animals
  - created in research cloning to serve, well, research
  - cultured, graded and selected for embryo transfer
  - embryology
  - formed in different ways
  - human lives
  - in a very sensitive stage of development when the eggs enter the hatchery
  - initially sexually indifferent and gonads can be testes or ovaries
  - like presidential candidates
  - organisms
  - ovophagous and consume smaller siblings
  - perfect diploids
  - pink to pink-red in color
  - ready to mount or dissect once they have settled to the bottom of the well
  - released from uterus and attach to host tissue
  - the richest source of human stem cells but their use has been dogged by ethical debate
  - unable to clear their tracheal system of fluid
* begins to grow.
* can accommodate such levels of cellular damage and still establish healthy pregnancies.
* carrying two copies of the nonfunctional gene fail to develop kidneys.
* develop and hatch in about four weeks, then spend four to five months in the tadpole stage
  - from general to specific
* develop in egg masses cared for by the females
  - the bursae and develop into tiny brittle stars before they are released
  - inside seeds
* develop to first-stage larvae within about three weeks
  - fully formed first-stage larvae within about three weeks
* die at fourth day of incubation
  - second and third day of incubation
* display characters.
* feed on plankton and are ciliated.
* first develop into a trochophore larva, then a veliger, and finally a spat.
* form cotyledons.
* hatch in a few days and tadpoles transform in about two months
  - tadpoles transform in two months
  - the evening
  - four epibranchials
  - the same requirements prior to pipping that the chicks have following hatching
* includes cell membranes
  - corpi
  - cytoplasm
  - plant parts
  - plasma membranes
  - sections
  - vacuoles
* initially grow using stored yolk.
* lack an amnion, but eggs are laid in a jelly-like protective coating.
* lacking ems function also show a ventral derepression of col expression
  - loco function have a normal overall morphology, but fail to hatch
  - nautilus are, however, missing a distinct and reproducible subset of muscle fibers
* look alike while adults look different.
* need food
* normally live on their fat, usually in the form of yolk.
* null for csw , with a hypomorphic allele of raf show no tll activity.
* occupies most of space within egg except air cell.
  - their nourishment from the egg
* remain and develop in the gravel, consuming their egg sac.
  - heat to develop
* start out as a mass of cells.
* starts to germinate.
* stop development at the globular stage.
* touch membranes
  - shell membranes
* transfer The replacement of one or more embryos into the uterine cavity.
* use the yolk and receive some nourishment from the mother.
* usually fall out of their chorions with gentle swishing during the rinse.
* weigh twenty pounds and measure over fifty inches.