Bitesize has changed! We're updating subjects as fast as we can. Visit our new site to find Bitesize guides and clips - and tell us what you think!

Did you know?

We also have Bitesize study guides covering many subjects at National 4 and National 5 on our Knowledge & Learning BETA website.

Home > Biology > The world of plants > Growing plants

Biology

Growing plants

Seeds and germination

Bean shoot which has an outer seed coat which contains the food store, with the embryo containing the shoot on the side of bean

The seed of a dicotyledonous plant has three main parts:

Table of seed components

StructureFunction
Seed coata tough protective outer covering
Embryoconsisting of the young root and shoot which will develop into the adult plant
Food storea store of food (starch) for the young plant to use until it is large enough to make its own food

Germination is the start of growth in the seed. Three factors are required for successful germination:

  • Water - allows the seed to swell up and the embryo to start growing
  • Oxygen - so that energy can be released for germination
  • Warmth - germination improves as temperature rises (up to a maximum)

 

Video: Germination This video demonstrates the ways in which seed germination is affected by environmental factors.

In order to see this content you need to have both Javascript enabled and Flash installed.

 

 

Video: How plants produce seeds

In order to see this content you need to have both Javascript enabled and Flash installed.

 

Watch

Flower in bloom

Class Clips

Video clip about self- and cross-pollination.

Learn more about plant reproduction:

Fertilisation

Reproduction in plants

Play

A picture of Mia Cadaver

Tombstone Timeout

Test out your knowledge of biology with Mia Cadaver's biology game - it's serious fun!

BBC © 2014 The BBC is not responsible for the content of external sites. Read more.

This page is best viewed in an up-to-date web browser with style sheets (CSS) enabled. While you will be able to view the content of this page in your current browser, you will not be able to get the full visual experience. Please consider upgrading your browser software or enabling style sheets (CSS) if you are able to do so.