Unit 3 lesson 3 Flashcards
Do animals have life cycles?
Yes
What is life cycle of bird?
1 hatches from an egg 2 grows and changes 3 reaches youth 4 adulthood 5 reproduction
How do most animals reproduce?
Sexually
what is sexual reproduction?
Sperm from a male joins an egg from a female
where are eggs fertilized?
1outside of females body-egg
2 in the mother
What is life cylce of animals?
1 born 2 grows 3 youth 4 adulthood 5 reproduction
How do life cycles repeat?
Reproduction
What animals hatch from eggs?
Fish, birds, reptiles, and spiders
What happens after an animal is born?
1 they are on their own
2 get care from parents
3 get milk
describe the human lifecycle?
1 birth 2 toddlers 3 child 4 teenagers 5 adult 6 reproduction 7 death
What is metamorphosis?
A series of changes young go through
Describe stage of complete metamorphosis
1eggs
2 larva
3 pupa
4adult
describe stages of incomplete metamorphosis
1nymph
2 molts
3 adult
do young animals that go through the complete metamorphosis look like adults?
Bo
what is nymph
A tiny adult
what does mean for animals to be endangered?
There are barely any left
how do scientists try to help endangered animals?
Study life cycles of animals to try and save them and increase their numbers
Why have sea turtles become endangered?
Because of the hunting, pollution, and beach erosion