Study your flashcards anywhere!

Download the official Cram app for free >

  • Shuffle
    Toggle On
    Toggle Off
  • Alphabetize
    Toggle On
    Toggle Off
  • Front First
    Toggle On
    Toggle Off
  • Both Sides
    Toggle On
    Toggle Off
  • Read
    Toggle On
    Toggle Off
Reading...
Front

How to study your flashcards.

Right/Left arrow keys: Navigate between flashcards.right arrow keyleft arrow key

Up/Down arrow keys: Flip the card between the front and back.down keyup key

H key: Show hint (3rd side).h key

A key: Read text to speech.a key

image

Play button

image

Play button

image

Progress

1/40

Click to flip

40 Cards in this Set

  • Front
  • Back
life cycle
The ordered changes that occur during the lifetime of a living thing.
species
A group of organisms of the same kind that can mate and produce offspring like themselves.
egg
The first stage in the life cycle of almost all animals.
embryo
An animal or plant in the earliest stages of its development.
complete metamorphosis
The four-stage life cycle of many insects.
larva
The second stage in the life cycle of an insect that undergoes complete metamorphosis.
pupa
The third stage in the life cycle of an insect undergoing complete metamorphosis.
adult
The last stage of a life cycle.
incomplete metamorphosis
The three-stage life cycle of some insects.
nymph
The second stage in the life cycle of an insect undergoing incomplete metamorphosis.
adaptation
Behavior or part of a living thing that helps it survive in a certain environment.
seed coat
The part of a seed that protects the plant embryo.
germinate
To sprout and begin to develop into a seedling.
seedling
The new plant that develops from an embryo and has roots, a stem, and leaves.
pistil
The central part in a flower where seeds form.
petal
The brightly colored part of a flower that helps attract birds, bees, and other insects to the flower.
stamen
The part of a flower that produces pollen, which is needed to form seeds.
pollen
The powdery grains in a flower; they must be carried from a stamen to a pistil in order for seeds to form.
pollination
The process by which pollen reaches a pistil.
fruit
The part of a flower that forms around a seed.
cone
The part of a conifer that produces pollen or seeds.
scale
A cone's woody part on which seeds grow.
embryo
An animal or plant in the earliest stages of its development.
environment
Everything that surrounds and affects a living thing.
savanna
A broad, grassy plain that has few or no trees.
adaptation
A part or behavior that makes a living thing better able to survive in its environment.
behavior
The way in which a living thing acts or responds to its environment.
instinctive behavior
A behavior that a living thing does naturally without having to learn it.
learned behavior
A behavior that an organism is taught or learns from experience.
extinct
No longer living as a species.
cell
The basic unit of structure of all living things.
life processes
The functions that a living thing must carry out to stay alive and produce more of its own kind.
nutrients
Substances that are needed for an organism to live and grow.
tissue
Simmilar cells working together.
organ
Different types of tissue working together to perform a certain function.
organ system
Group of organs working together.
cell membrane
A thin layer that surrounds all cells and allows water and dissolved materials to pass into and out of the cell.
nucleus
The cell structure that controls all of a cell's activities.
vacuole
A cell part that stores water and nutrients.
cytoplasm
The jellylike substance that fills much of the cell.