YR2-B6-LSN1

• Biologie
• Middelbare school
• havo, vwo
• Leerjaar 2

BIOLOGY

YEAR 2 

LESSON 1

root

stem

flower

leaf

fruit

anther

filament

petal

sepal

stigma

style

ovary

nectary

What type of pollination is seen in the image beside?

1. insect pollination
2. wind pollination

food store

radicle

plumule

skin

micropyle

Put the words in the correct order, starting with pollination. 

pollination

growth

germination

fertilization

dispersal

What type of dispersal can be seen in the image beside?

1. wind dispersal
2. water dispersal
3. self dispersal
4. animal dispersal

What type of dispersal can be seen in the image beside?

1. wind dispersal
2. water dispersal
3. self dispersal
4. animal dispersal

What type of dispersal can be seen in the image beside?

1. wind dispersal
2. water dispersal
3. self dispersal
4. animal dispersal

This picture shows a strawberry plant, what type of asexual reproduction can this plant do? Explain how this process works in detail please.

A piece of a plant that is used in horticulture for vegetative (asexual) propagation. A piece of the stem or root of the source plant is placed in a suitable medium such as moist soil. If the conditions are suitable, the plant piece will begin to grow as a new plant independent of the parent, a process known as striking. What process is explained in the text above?

1. cuttings
2. runners
3. grafting
4. cloning

02:35

If a flower contains both male and female parts, what do we call it?

1. a perfect flower
2. an imperfect flower

04:20

What type of pollination is being explained here?

1. wind pollination
2. insect pollination

05:03

What is the name given to the process of a baby plant growing from a seed?

Booklet 6 Section 1:

• Now you are up tot date with what you should remember from last year we are going to start the new topic.
• The next video is about sexual and asexual reproduction.
• Try to make notes as it goes along. 
• There will be slides afterwards adding tips and asking you questions.

01:04

What type of asexual reproduction in plants is shown here?

1. cuttings
2. bulbs
3. tubers
4. runners

Sexual Reproduction

two parents

1/2 DNA comes from each parent

give a lot of variation

usually happens in larger more complex organisms

uses both mitosis and meiosis

Asexual reproduction

one parent

all the DNA comes from one parent

very little variation

usually happens in smaller simpeler organisms

uses only mitosis no meiosis

Mitosis:

• The daughter cells are an exact copy of the mother cell.

• Interphase - the cell is at rest and is already copying the chromosomes.
• Prophase - the step before mitosis the nucleus is still there
• Metaphase - the chromosomes move to the middle of the nucleus.
• Anaphase -  the chromosomes split and the separate chromosomes move away from each other.
• Telophase - the separated chromosomes form two new nuclei at each end of the cell.

Meiosis:

• Is used to create gametes.
• PMAT is done twice!

• Prophase - the step before mitosis the nucleus is still there
• Metaphase - the chromosomes move to the middle of the nucleus.
• Anaphase -  the chromosomes split and the separate chromosomes move away from each other.
• Telophase - the separated chromosomes form two new nuclei at each end of the cell.

If you cut yourself, which process heals the wound?

1. mitosis
2. meiosis

In a plant, which process produces the pollen grains?

1. mitosis
2. meiosis

Which process makes your hair and fingernails grow?

1. mitosis
2. meiosis

Which process produces sperm cells in cats?

1. mitosis
2. meiosis

Homework for lesson 2:

• If you look on classroom you will see the file "Hw for lesson 2".
• You will see 4 levels in the hw.

• You can decide to what level you complete the hw. 
• if you are a minimalist and bio is not your favorite subject, you must complete the work to at least level 2.
• If you like bio and/or you are aspiring to go to vwo, you will have to always complete your work to minimum of level 3.
• Good luck!!

Please be honest, what did you think of this lesson.