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Year 5 Botany - The Study of Plants


Introduction


This unit helps you to recap and pull together everything that you have learned about plants so far.


Activity 1

Keeping a Plant Journal


Ask your parent or teacher if you can download Planet Net to a mobile device. This is a citizen science project where you can use your mobile device to take a photo of a plant. The app will then identify the plant for you and scientists all over the world will use the data to improve our knowledge of the natural world.


Try and photograph as many plants as you can this week. Make a note of each plant name and where you found it. You may keep a record as a list, you may choose to sketch each plant or add a label to photographs of the plant


Look at how these sunflowers move!






Most of the plants that you record will have roots, stems and leaves.


Watch this Homeschool Pop video to recap the main parts of a plant and their functions.




Complete the worksheet below.



Lableplant
.pdf
Download PDF • 488KB


Choose at least three of the plants you found and draw a sketch on one of the journaling pages. Then label the stem and leaves for each plant. Try adding some roots below ground level and any interesting information you find out about the plants.



plantjournal
.pdf
Download PDF • 504KB


You will probably have noticed that the stems of plants do not all look the same. Some are soft and green while others are hard and woody. Read pages 18-21 of The First Book of Plants.





Go back to your plants and see if you can label them herbaceous (soft and green) or woody.


Activity 2

Little Factories


One amazing fact about plants is that they make their own food. Today we are going to look at how they do this. The process plants use to make food is called photosynthesis. Photo means light and synthesis means putting together, so photosynthesis means putting together with light.


The cells of leaves and some other green parts of plants contain a molecule known as chlorophyll.

Chlorophyll is used by plants to trap energy from sunlight which is then used to combine water and carbon dioxide creating sugars that the plant uses for food and oxygen as a waste product. The extra sugar produced by the plant is stored in its’ roots, stems, leaves, flowers and fruits.


Read pg 9-12 of The First Book of Plants


So the process of photosynthesis can be broken down into three main points that you need to remember.

  1. Plants containing chlorophyll use the energy from the sun to combine water and carbon dioxide to create sugar and oxygen.

  2. The roots soak up water and nutrients from the soil and two tubes called the xylem and phloem transport the water and nutrients around the plant.

  3. Carbon dioxide enters the plant through tiny holes called stomata in the leaves.



Activity 3

Photosynthesis


Watch the SciShow Vegetation Transformation video to recap photosynthesis.




Read pg 13-17 of The First Book of Plants


You can see water being transported by carrying out the following activity. Watch the video then follow the instructions.



You need: celery, scissors, glass jar, dark food colouring, magnifying glass.

  1. Cut the bottom off a stick of celery that has leaves on it.

  2. Place the celery stick into a glass half full of water.

  3. Add two-three drops of black ink to the water.

  4. Leave overnight.

  5. Take the celery stick out and record what you observe.

  6. Try cutting the stick above the water line and having a close look at the ends of the stick. You can use a magnifying glass to help you see better.

  7. Record what you have done on the lab report below.


Experiment
.pdf
Download PDF • 38KB

There is one last thing you need to know before you move on; not all plants have roots, stems and leaves! We categorise these types of plants as non-vascular plants. This means that they do not have a vascular system. A vascular system is a system that transports water and nutrients around the plant. So, non-vascular plants do not have a xylem and phloem to transport materials around the plant. They are usually small and low to the ground so that they can soak up water more easily, moss is an example of a non-vascular plant. Like vascular plants (plants that have roots, stems and leaves) non-vascular plants rely on photosynthesis to produce the energy that they need.


Activity 4

Big Experiment!


Read pg 18-21 of The First Book of Plants


Today you are going to be carrying out a photosynthesis experiment. Follow the instructions below and complete the lab report. Ask your grown-up to help you get the equipment ready.


You will need: 4 glass jars, bean seeds, compost

  1. Half fill four jars with compost.

  2. Place a bean into the first two jars, the right way up and then into the second two jars the wrong way up. If you are not sure which way is which just make sure two point one way and two the other!

  3. Fill up the rest of the jars with compost and water the compost.

  4. Place one right way up bean jar on a sunny windowsill along with one wrong way up bean jar.

  5. Place the remaining two jars into a dark cupboard.

  6. Over the next two weeks water the jars daily and record what happens, you can take photographs of the beans each day or keep a written diary.

You can use the lab report from yesterday or make your own experiment log to record your experiment. Things to think about are: Which bean do you predict will grow best? Why? Do you think placing the bean upside down will have an effect? What variables (conditions) did we keep the same or change? Which plant looks healthy? Why? How could you help the unhealthy plant grow better?


Activity 5

Flowers

Let’s move on! At the start of the unit, I asked you to record some plants that you found. If you look back at the sketches it is likely that you spent more time drawing the flowers than anything else. We are now going to begin to look at the flower and what its purpose is.


Read from ‘Making New Plants’ Pg 23 – ‘How Bees Help’ pg 25 of The First Book of Plants.



Now you are going to dissect some flowers!

You will need: scissors, tweezers, craft knife, big flowers, paper plates, camera.






  1. Take your flower and gently separate the different parts using the scissors and tweezers.

  2. Place the different parts on a paper plate or piece of card, label each part and put the name of the flower at the top.

  3. Take a photograph of the plate.

  4. Repeat for the other flowers you have.

  5. Use the photographs to create a display of flowers. Try adding some descriptions about each part to the display.

Parts you can include are leaf, stem, root, sepal, petal, ovules, stamen (anther and filament), pollen and pistil (stigma, style, ovary).


Activity 6

Pollination

Read from ‘How Bees Help’ pg 25 – ‘Packaged Plants’ pg 33 of The First Book of Plants.


Watch the videos below to get a good round-up of pollination.



BBC How do Flowering Plants Reproduce?

StudyJams Plant Flowers


Pollination is the first process in creating new plants. During pollination, the pollen on the male stamen is transferred by insects or the wind to the sticky tops of the female pistil. If the pollen is transferred to the pistil of the same kind of plant, a long tube will grow out of the grain of pollen. The tube grows all the way down into the ovule. Inside the tube is the male gamete, which then travels all the way down the tube to join with the female egg cell inside the ovule, this is the second process called fertilisation.


The fertilised egg begins to divide and form an embryo, the seed, and the ovule grows into a seed coat that protects the seed. This is the point at which the petals and sepals start falling off the plant while the ovule begins to grow to cover the seed. This covering, the fruit, is often juicy and nutritious to animals who eat the fruit. The fruit is easily digestible but the seeds are not and so pass through the body of the animal and are eliminated on the ground. If a fruit falls from a plant but is not eaten then the fruit decays and the seeds are left on the ground.


Watch the Hidden Beauty of Pollination TED.




Insects are very important for pollination, without them many of the plants we know would disappear!

Watch the Pollinators SciShow video.




Activity 7

Seeds and Fruit

Read from ‘Packaged Plants’ pg 32 – 34 of The First Book of Plants.


Today I want you to look around you and think about the food you eat. We have talked about how plants store sugar to convert to energy in different parts of the plant and how fruit forms. Now I want you to identify different parts of the plant that we eat. Complete the worksheet.



Plantsweeat
.pdf
Download PDF • 2.67MB


If you need a recap the BBC's Maddie, The Plants and You is a good video to watch. It won't always be available but worth trying to watch.


So what happens if an animal does not eat the fruit of a plant? How does the seed become a new plant? Watch this SciShow video How Seeds Travel the World, to find out.



Activity 8

Germination

Read pgs 35 – 45 of The First Book of Plants.

Watch the SciShow How Seeds Become Plants.



Today you have been learning about germination, the process of a seed becoming a plant once it has fallen onto the ground and has the right conditions.

How are your beans coming along? By now you should be seeing signs of germination. Eventually, the bean will grow its own leaves and start producing its own food and then seeds.


You have now completed the whole life cycle of a plant!


Watch BBC KS2 Bitesize video The Lifecycle of a Plant.



Ask your grownup for another bean seed. Pop the bean seed in water overnight.


Activity 9

Inside a Bean

Remove the bean seed from the water. Carefully remove the seed coat with your fingers (it should be nice and soft by now). Then gently separate the two halves of the seed and see if you can find the embryo and the food store. Draw a picture of the inside of your seed and label it.


To help you better understand everything we have covered about a plants life cycle and to end with a bit of fun, go to this website and see if you can work your way through the cases and solve the Great Plant Escape.


Print out this summary sheet to add to your folder or put on your wall.




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