Chapter 2 - Parents and Offspring

life_science

 

 

Unit A - Diversity of Life

  • Chapter 2 - Parents and Offspring

How do living things reproduce?

Metamorphosis

Article

Metamorphosis

The butterfly begins life as an egg, emerges as a caterpillar, and then undergoes a complete change in body form during development.

Who Are the Plants?

Article

Who Are the Plants?

There are 10 divisions in the plant kingdom. The largest order, flowering plants, has 235,000 species. The smallest, gingkoes, has a single species. Learn more about the orders in the kingdom Plantae.

Parts of a Flower

Diagram

Parts of a Flower

Go beyond petals and leaves! Learn how to identify a flower's stamen, anther, filament, stigma, and more with this illustrated look at the parts of a flower. 

Aspen: A Keystone Species

Young Naturalist Awards Essay

Aspen: A Keystone Species

By keeping a nature journal, this 16-year-old from Colorado quickly saw how aspens support and sustain biodiversity. Learn more about the most widely distributed tree species in North America.

Saguaro Cactus: From Life to Death

Young Naturalist Awards Essay

Saguaro Cactus: From Life to Death

2003 Young Naturalist Award-winning essay - Journey to the Sonoran Desert in southern Arizona with this seventh-grader for an up-close and personal look at the saguaro cactus, which can live about 200 years and grow to be almost 80 feet tall.

Life in a Vernal Pool

Young Naturalist Awards Essay

Life in a Vernal Pool

Come exploring with this 9th-grader from Texas as she watches a thriving vernal pool habitat rise up from an area of dried-up muddy earth—and then disappear once again.

Frozen in Time (Science World)

Staff Profile

Frozen in Time (Science World)

Meet an AMNH scientist who manages one of the world's largest frozen tissue collections. Then take a peek inside her cryovats, where animals on the brink of extinction remain frozen in time. 

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