Life Science Chapter 14 Section 1: What is an Animal?
Budding
A form of asexual reproduction of yeast in which a new cell grows out of the body of a parent.
Sexual Reproduction
A reproductive process that involves two parents that combine their genetic material to produce a new organism, which differs from both parents
sexually
Almost all animals reproduce
Consumer
An organism that eats other organisms or organic matter
Multicellular Makeup, Reproduction and Development, Many Specialized Parts, Movement, Consuming,
Animal Characteristics
cell membranes
Animal cells are surrounded by only
Invertebrates
Animals without backbones
egg
Female sex cell
adult sea anemones attach to rocks or the ocean floor and wait for food to arrive
How do adult sea anemones find food?
young sea anemones swim through the ocean to find their food
How do young sea anemones find food?
sperm
Male sex cell
fishes, amphibians, reptiles, birds, and mammals
Types of Vertebrates
cell walls
Unlike plant cells, animal cells do not have
embryo development
When an egg and a sperm join during fertilization, they form the first cell of a new organism. This cell divides into many cells to form an
tissue
a collection of similar cells (ex. nerve cells form nerve ______)
organ
a group of tissues that carry out a special function of the body
embryo
a plant or an animal in an early stage of development
Vertebrate
an animal that has a backbone
eggs or sperm
animals make sex cells—
food, shelter, mates
animals use movement for
more than 30%
beetles make up ________ of all animal species
differentiation
cells develop into different kinds of cells
multicellular
made of many cells
invertebrates
majority of animals
Less than 5%
of known animal species are vertebrates
more than 3 million species
scientists estimate that there are this many species of animal on earth
skin cells, muscle cells, nerve cells, or bone cells
types of specialized tissues
