YR3_Longman R&I_LSN2 5.1

• Biologie
• Middelbare school
• havo, vwo
• Leerjaar 3

LESSON 2

REPRODUCTION & INHERITANCE

Reproduction & inheritance

Week	Planning
47	Start Reproduction
48	Longman 5.1
49	Longman 5.2
50	Longman 5.3
51	Act. Week
52-1	Christmas Break

Week	Planning
2	Revision
3	Quiz Reproduction
4	Start Inheritance
5
6
7

Reproduction & inheritance

Reproduction & inheritance

Reproduction & inheritance

Revision 5.1

• Kwizl: ET_Y3_CH5_LSN2

Steps of sexual reproduction

• pollination
• fertilisation
• dispersal
• germination

Asexual reproduction in plants

• bulbs & tubers
• runners
• cuttings & grafting
• cloning

What kind of reproduction do plants have?

1. Sexual
2. Asexual
3. Both
4. Other

Most plants make seeds, such as acorns. Is this sexual or asexual reproduction?

1. Sexual reproduction
2. Asexual reproduction

Some plants can be regrown completely from a single branch. Is this sexual or asexual reproduction?

1. Sexual reproduction
2. Asexual reproduction

During sexual reproduction in plants, which two gametes fuse together?

1. Sperm and egg
2. Pollen and egg
3. Sperm and pollen

root

stem

flower

leaf

fruit

STYLE

PETAL

Carpel

ANTHER

SEPAL

OVARY

STIGMA

STAMEN

FILAMENT

Flower parts with features and functions

Sepals

Petals

Stamen

Carpel

Male reproductive organ

Stigma, style and ovary

To attract insects

Produce egg cells (female sex cells) in ovum

Filaments and anther with pollen sacs

Produce pollen grains (male sex cells)

To protect the flower bud against cold and dehydration

Large and brightly coloured, sometimes small and green

Usually green

insect-pollinated flowers

Wind-pollinated flowers

green petals

Nectar

Stamen inside the flower

Produce a lot of pollen

Scent

Brightly coloured petals

Sticky pollen

Pollination 

Self-pollination

Cross-pollination

No pollination

When pollen on the anther of a flower reaches the stigma of a flower on the same plant

When pollen from one plant reaches the stigma of a flower on another plant 

When pollen of one species (=soort) reaches the stigma of a flower of another species

1

2

3

4

5

6

7

8

9

10

Stigma

Petal

Ovary

Sepal

Filament

Stalk

Carpel

Stamen

Anther

Top part of stalk

flower stalk

sepal

ovary

stamen

petal

ovule

Homework

• complete the exercises in "Longman 5.1"
• study the STUDYGO lists LSN 1 
  
• study your notes