Chapter 3 Life Cycles

Lesson 1: Plant Life Cycles Key Vocabulary

1. embryo- A plant or animal in the early stages of development

2. germinate- to begin growing a new plant

3. life cycle- a series of stages that occur during the lifetime of a living thing

4. life span- the length of time it takes for an individual organism to complete its life cycle

Notes The ___________ of the flower makes pollen which is needed to form ___________. 3 ways pollen can be moved from the __________ to the __________: Wind Water Animals (insects)

Notes _________ _________ petals attract birds and insects to a flower. Life Cycle of a Flowering Plant: A. Pollen is moved from the ___________ to the ___________. B. The plant forms a __________. D. When the seed ___________, a young plant will grow. C. The plant releases a ___________.

Notes For flowering plants, the life span begins when a seed __________. In organisms that are similar, such as trees, the smaller kinds usually have shorter life spans than the larger kinds.

Lesson 2: Animal Life Cycles Key Vocabulary

1. adult- A fully grown, mature organism

2. egg- The first stage in the life cycle of most animals

3. larva- A worm-like form and the second stage of complete metamorphosis

4. metamorphosis- The process in which an animal changes form in different stages of its life cycle

5. nymph- The second stage of incomplete metamorphosis

Lesson 2 Notes Egg Larva Adult Pupa 1. Life cycle with __________ metamorphosis. Egg Larva Adult Pupa

Lesson 2 Notes Egg Adult Nymph 2. Life cycle with __________ metamorphosis. Egg Adult Nymph

Lesson 2 Notes All ________ lay eggs, but _________ do not lay eggs. Many insects change form ______ times. Examples: Butterflies, Ladybugs, Bean Beetles In general, _________ _________ have shorter life spans than __________ __________ of the same kind.

Lesson 2 Notes A _________ looks like an adult, but has no _________.

Lesson 3: Parents and Offspring Key Vocabulary

1. inherit- to receive traits from a parent

2. trait- a feature or a characteristic of a living thing

Lesson 3 Notes A __________ trait is a trait that is passed from parents to offspring through reproduction. This is why parents and offspring usually ____________ (look like) each other. Organisms with 2 parents __________ ________ from both parents. A tadpole looks like its parents after ________ ____________.

Lesson 3 Notes Living things resemble their parents Examples: Blue eyes, curly hair Examples: Frogs Some offspring look different, but grow to look like their parents Organisms inherit traits