U1 B2 1HVTTO

• Biologie
• Middelbare school
• havo, vwo
• Leerjaar 1

B2 Growth & Development

• Read pages section 1.2

Lessongoals

• You can describe what growht and development are
  
• You can list the parts of a seed and their functions
  
• You can describe the lifecycle of a seed plant

Today

• Short recap
• Growth or development?
  
• Time for homework
  
• End

This grass is ..

1. Alive
2. Dead
3. Non-living
4. We don't know

A being that is alive is called an ..
(1 word)

When an organism gets bigger and heavier =

growth

What life process is shown in the picture?

Difference Growth and development

             Growth = (a part of) The organism gets bigger and heavier

Development = (a part of) The organism changes its structure

Growth

Development

A brown bean

Outside

• pore/micropyle: absorbing water
  
• Navel/hilum: attachment to pod
  
• Heart shaped bulge
  
• Seed coat: protection

Inside

• Plant embryo 
  (=kiem)
• Seed leaf: food
  (=zaadlob)

micropyle

navel

heart shaped bulge

seed coat

root

plant embryo

leaflet

seed leaf

Water is absorbed through the micropyle.

Germination begins

A seedling has emerged from the seed.

The seedleaves contain food to make growth happen.

The seedleaves are depleted, they will disappear.

Plant continues to grow

The plant wants to reproduce.

The plant develops flowers, these change into new pods.

The cycle starts again