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Stack #27652
Mr. Olson 5th Grade Science Chapter 4A
Question | Answer |
---|---|
What structure is the male part of the flower? | stamen |
After fertilization an ovary enlarges and develops into a what? | fruit |
Which structure is the female part of the flower? | pistil |
What part of the flower produces the female sex cells? | ovule |
Which part holds the pollen grains? | male sex cells |
Which part of the flower is where pollen grains land and stick? | stigma |
When it is time to reproduce, salmon return to the ________? | freshwater stream |
The sprouting of a plant is called ______? | germination |
Beetles and butterflies go through four stages which make up ______? | complete metamorphosis |
A young tree is called a what? | sapling |
What is the tiny new plant that forms from the fertilized egg called? | embryo |
When a male sex cell joins with a female sex cell to produce a fertilized cell it is called _______. | sexual reproduction |
The stage of a human life cycle which last from about age 1 to about 12 is called what? | childhood |
After fertilization an ovary enlarges and develops into a what? | fruit |
Human life cycle | stages from birth to death. |
Infancy | birth to age 1, completely dependent on parent.Traits inherited from parents. |
childhood | ages 1-12, ability to walk and talk, growth fairly steady, learns many skills such as to speak,learn, and learns a lot from environment. |
Adolescence: | ages 11-20, growing into adulthood |
Adulthood | ages 20-till death, greatest strength and endurance, responsible??? |
Male life expectancy | 72.2 years |
Female life expectancy | 78.8 years |
Insect life cycle-complete metamorphosis | egg, larva, pupa, adult |
egg | 1st stage, eggs are laid by adults |
larva(grub) | wormlike stage, eats decaying wood or other rotting materials in the soil. |
pupa | looks like its at rest, develops a hard outer case, adult organs form |
adult: | final stage, fully grown |
Vertebrate | animal with a backbone, constant body temp. |
cold blooded | body temp changes with environment. |
Sexual reproduction | a male sex cell joins with a female sex cell to produce a fertilized egg. |
Pollen grains(plant) | contains male sex cell |
Pollination | transfer of pollen grains |
embryo | a fertilized egg, a tiny new plant the seed enlarges to form fruit |
stamen | male part of flower |
pistil | female part of flower |
Stage 1 of plant reproduction | pollen lands on pistil |
Stage 2 of plant reproduction | pollen tube grows down into ovary and fertilization take place |
Stage 3 of plant reproduction | fruit begins to grow |
Stage 4 of plant reproduction | seeds form in the fruit |
Stage 5 of plant reproduction | fruit ripens, splits open releasing new seeds |
asexual reproduction | growing plants without using seeds |
Deciduous trees | lose their leaves |
Conifers | evergreen stay green all year |