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