Anamalia Flashcards

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1
Q

What are characteristics of animals?

A

Multicellular, eukaryotic, heterotophic, sexual and asexual reproduction, all move, all hv organs which respond to external stimuli

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2
Q

What are the ways we can classify them? Describe them.

A

Skeletal structures:
- vertebrates, animals w a backbone eg frogs and humans
- invertebrates: animals w no backbone, worm, spider, sea star
Symmetry:
Radially symmetry: organisms are more primitive, when cut anywhere in half from top to bottom they are the same eg starfish
Bilateral symmetry: more complex, cut in half down the middle are halves the same eg humans, lobsters

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3
Q

What are the modes of reproduction?

A

Asexual: fragmentation
Asexual: budding
Sexual: fertilization and zygote formation

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4
Q

What’s a zygote?

A

When the sperm and egg meet it forms a zygote, however when mitosis starts it’s an embryo

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5
Q

Describe fragmentation

A

Asexual, you can cut the organism anywhere/ it breaks off anywhere and forms a new individual. Eg hydra

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6
Q

Describe budding

A

Asexual, new organism develops from outgrowth or bud due to cell division at site. Too many are made so it buds off, eg adult jellyfish, coral

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7
Q

Describe fertilization and zygote formation

A

Sexual, sperm fertilizes egg to produce zygote, zygote undergoes mitosis until fully formed organism is complete.

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