TTO Week 27 - Plants

• Biologie
• Middelbare school
• vwo
• Leerjaar 1

Plants

Paragraph 5.1

Welcome to biology!

Today, we will discuss the kingdom of plants

First, we will go into what a plant looks like, and later on we will discuss different types of plants that exist.

Structure of plants

Different parts of a plant:

• Root
• Stem
• Leaf
• Flower

Root

• First part to grow
• Anchor the plant in the soil
• Take up water and minerals

Stem

• Second part to grow
• Holds the plant upright
• Sends water and minerals to rest of the plant
• Provides height

Leaf

• Make energy via photosynthesis

Flower

• Reproduce by producing seeds and fruits
• Many ways of attracting pollinators (colour, smell, sugar)

Many types of plants exist!

• Mosses and liverworts
• Ferns
• Gymnosperms
• Angiosperms

Mosses and liverworts

• Simple leaves
• No stems or roots
• Spore capsules

Ferns

• Leaves, roots and stems
• Make spores inside sporangia

Gymnosperms

• Seeds develop in cones
• Leaves are needle-shaped
• Often live in cold, dry areas

Angiosperms

• Flowering plants
• Sperm cells contained in pollen
• Pollinated by insects, wind and other animals
• Fertilized eggs = seeds, sometimes in fruit

Beside you can see a picture of xylem and phloem in a plant stem. What directions do they flow in?

1. Xylem goes down and phloem goes up
2. Xylem goes up and phloem goes down
3. They both flow up
4. They both flow down

WHAT CLASS OF PLANTS DOES NOT HAVE PROPER ROOTS OR STEMS?

1. MOSSES & LIVERWORTS
2. FERNS
3. CONIFERS
4. FLOWERING PLANTS

What is the function of the root hairs?

1. Anchor the plant in the soil
2. Holds the plant upright
3. Taking up water

Roots can:

1. Fix/anchor the plant in the soil.
2. Store food for after winter.
3. Absorb water and minerals.
4. All of the above.

Photosynthesis can occur in a root.

1. True
2. False

off to work 

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That was it..

• We will not see each other until after the summer holidays
• Have a really nice summer and see you next year!