Domain 2: Life Cycles Flashcards
(23 cards)
what is metamorphosis?
change in physical appearance during a life cycle
what is the life cycle of a frog?
egg
tadpole
tadpole with hind legs
frog
what happens in the first stage of a frog?
females lay thousands of eggs in wayer and have techniques to ensure survival
what happens in the second stage of a frog?
eggs hatch and continue as tadpoles
eat algae
no lungs, eyelids, or legs
what happens in the third stage of a frog?
metapmorphosis
develop legs
lose gills
develop lungs
what happens in the final stage of development for a frog?
froglet evolves into an adult frog
what happens after metamorphsis for frogs?
may live in terrestrial aquatic habitats
what are the stages of the butterfly life cycle?
egg/embryonic
larva/catepillar
pupa/chrysalis
adult butterfly/imago
what happens in the first stage of the butterfly life cycle?
eggs are laid on plants
what happens in the second stage of the butterfly life cycle?
catepillars consume plant leaves
produce hormones and wanders for quitable pupation site
what happens in the third stage of the butterfly life cycle?
the larve transforms into a chrysalic by anchoring to a substrate and molting
what happens in the last stage of the butterfly life cycle?
the imago emerges from the pupa and flies after wings are unfolded
what does the anther do in flowing plants?
produce male gametophytes
how is sperm produced in plans?
in pollen grains and attach to stigma
where are female gametophytes locates?
insive ovules in the carpel
how do flowering plants reproduce in sexual means?
pollen tube grows through the carpel’s style
sex cell nuclei from pollen grain migrate to ovule
zygote develops into an embryo
ovary grows into a fruit surrounding the seed
what is asexual reproduction?
reproduction that does not involve meiosis or fertilization
what is meiosis?
process where the number of chromosomes is cut in halme to form gametes or spores
what happens during meiosis?
one cell divides twice to form four haploid cells to be fused later for fertilization
what happens during meiosis and fertilization?
chromosomes of eat parent undergo genetic recombination
what are spores?
haploid cells that can divide genetatively without fertilization
what happens in mitosis?
parent cell’s genome is divided into daughter cells
