Dissecting Flowers Experiment

Besides adding beauty and colour to the garden, flowers play an essential role in our ecosystem; they feed our pollinators who in turn feed us. In fact, our bees help produce one-third of all the food on Earth! It’s safe to say that behind every successful crop is a good flower, so let’s get the kids up and close and personal with Mother Nature’s gems. Check out this DIY flower dissection experiment that teaches kids about plant anatomy, the importance of flowers, and gives them a blossoming good reason to enjoy the September sun. 

 

Blooming benefits

Flowers are so much more than just pretty faces. They help maintain your garden’s delicate biome balance and bring in all sorts of benefits that enrich other plants, while also sustaining the friendly creatures that live there. 

  • Critter food: The pollen and nectar produced by flowers feed birds, bees, butterflies, and other essential insects. With full tummies, these handy helpers pollinate our crops in return as well as help to spread seeds. 
  • Human food: Bees also use pollen to make honey, and what would the world be without this sweet delicacy! Also, flowers from edible plants indicate that the fruit or veg is on its way and can also be cooked in a stew or added to salads. 
  • Pest control: Having a variety of flowers is the easiest way to combat pests in the garden. They attract beneficial insects such as ladybugs, wasps, prey mantises and many more, who feast on all the aphids and lice that damage the garden. 
  • Reproduction: The flower is the reproductive organ of a plant. Seeds are produced in flowers, which mean that more of that plant will grow. In the case of edibles, flowers are essential as this is where our food comes from. 

Did you know? The Archaefructus Sinensis, known also as the Mother of All Flowers, is believed to be the world’s oldest flower.

Plant Transpiration Experiment DIY

water vapour photosynthesis transpiration plastic garden kids fun
Garden, Transpiration, nutrients, water, pores, garden, experiment, kids, DIY, Fun.

Did you know? Just like we release water vapour through our mouths as we breathe, so do plants through their stomata - tiny, pore-like structures on the surfaces of leaves. Plants use their roots to absorb water and nutrients from the soil, drawing it upwards into their stems and leaves. Some of this water is then returned to the atmosphere by the process known as transpiration.

 Why do plants need to transpire?

The loss of water (or transpiration) plays a vital role in maintaining healthy plant growth, water balance, and overall longevity. More specifically, plants transpire for 3 main reasons:

  1. Nutrient uptake – the rate of transpiration actually determines your edibles’ yield. Turgor pressure keeps the plant cells full and turgid, owing to the transpiration stream of water from roots to shoots. In agriculture, transpiration is essential in producing healthy crops.
  2. Cooling – to manage heat and drought stress, transpiration rates are crucial as this process brings down the temperature of leaves, the largest plant organ. However, losing too much water can leave plants dehydrated.
  3. Photosynthesis – water flow efficiency is intricately connected with photosynthesis through the stomata. A lot of the water absorbed from the soil is used for photosynthesis, cell expansion, and growth. A single tree reaching 20 meters high can take up between 10 litres to 200 litres a day!

Clearly, transpiration is a big deal. Get the kids involved and let’s bring this invisible miracle to light.

water vapour photosynthesis transpiration plastic garden kids fun
transpiration fun kids vapour water experiment garden plastic photosynthesis

 

Experiment time

You will need

  • A ziplock bag
  • String
  • A leafy branch of a tree

Try this: Compare transpiration rates and see how the environment affects plants by conducting separate experiments on both sunny and cloudy days.

 

Step 1: Find a plant in the garden with a nice leafy branch where your bag will fit over.

Step 2: Cover the section of the branch with the ziplock bag and then seal it tightly with some string around the stem.

How leaves change colour – an experiment for kids

How leaves change colour- an experiment for kids

Autumn is a colourful time for trees and a curious invitation to all young gardeners. Do your children also enjoy rummaging around in leaves, collecting them, and admiring their unique hues? Well then, here’s a DIY kids experiment that investigates the science of chlorophyll and answers the question of how and why leaves change colour. Are you ready for some fun in the garden? Let’s go!

 

What’s so cool about leaves anyway?

For starters, leaves are part of Mother Nature’s highly intelligent network of oxygen (O2) providers, making them an essential service to life on Earth. Through photosynthesis, leaves turn light energy into food for plants to grow. Using their pores, or stomata, leaves absorb carbon dioxide (CO2) and then release clean, crisp O2 for us to breath – thanks guys!

 

Chloro- me, chloro- you, chloro- phyll?  

Owing to changes in daylight and temperature during Autumn, the process of photosynthesis and the amount of chlorophyll in leaves is altered. Chlorophyll is the chemical that makes leaves green, so with less sunlight for photosynthesis, it’s only natural that some changes in colour are expected. The absence of chlorophyll is what results in the gorgeous display of sunset-hued leaves this time of year.

 

An experiment awaits!

You will need:

  • A few glass jars
  • A few coffee filters
  • Various colours of autumn leaves
  • Surgical spirits (available at pharmacies)
  • A spoon for mixing
  • A notebook to observe changes

 

Leaves at the ready:

  1. Unleash your kids upon the garden or park in search of as many different autumn-coloured leaves they can find. Equip them with a container to carry their findings.
  2. Group their leaf treasures by colour. Once sorted, smash/crumple/tear each group of leaves into pieces and then place each pile into a separate jar.
  3. Pour the rubbing alcohol into each jar until the leaf pieces are completely covered.

When plants eat insects, where do they go? A carnivorous plant dissection experiment for kids. When Love Bites

Do plants have stomachs and teeth? How are they able to catch prey like other carnivores if they can’t run? And when they catch insects, where do they go? These are mind-baffling questions indeed and certainly worthy of a little hands-on investigation! Scientists, biologists, and creepy-crawler lovers, are you ready to find out what happens when love bites this February? Eeeeew!

Did you know?

Carnivorous plants, also known as insectivorous plants, are those which get their nutrition by catching and digesting insects. How cool is that? Carnivory in plants is owing to centuries of evolution, driven by pure instinct to survive in areas with nitrogen-poor soil. There are over 600 known species of insectivorous plants around the world, time to get yours!

The deadliest devils

Here are a few carnivorous contenders that will make the perfect dissection specimen.

  1. Sundew: These bad boys exude a sticky substance that attracts and then traps insects and other small prey. Their meal is quickly swallowed by a web of tiny tentacles and digested by enzymes within the plant stems and leaves.
  2. Venus Fly Trap: One of the most popular meat-eaters with trigger-sensitive, dangerous jaws! They use sweet nectar to attract their prey and then with interlocking teeth, trap their victims. Digestive enzymes get to work as the plant absorbs a lovely nutritious soup.
  3. American Trumpet Pitcher: This cleaver funnel-like plant hunts using a pit-fall trap. Insects are attracted by a nectar-like secretion on the top of the leaves. Unlucky for them, the nectar is poisonous, sending their intoxicated bodies tumbling down the funnel.
  4. Tropical Pitcher Plant: Similar to the beastie above but more sack-like in appearance. They too attract insects using sweet intoxicating nectar. Prey slip on the rims of the plant, falling into a pool of death and soon drowning inside a sticky acidic liquid.

DIY Colour a Bouquet Experiment

DIY colour experiment

Transform white flowers into a rainbow bouquet

Who says back to school can’t begin with a little fun? This DIY experiment is science on rainbow steroids and will intrigue both boys and girls. Learn about plant anatomy, enjoy a little magic, and become the inventor of a whole new flower species. Transform white blooms into any colour you like, here’s how:

Plant picks

Any white flowers should work well for this experiment. Here are some top picks that are currently in bloom, either in the garden or at your local GCA Garden Centre.

  • White roses
  • Lisianthus
  • Carnations
  • Gerberas
  • Hydrangeas

You will need:

  • A few white flowers (store-bought or hand-picked).
  • 4 Different shades of food colouring (or as many as you like).
  • 4 Medium-sized drinking glasses or jars (avoid plastic cups).
  • A pair of sharp scissors
Life is a garden DIY colour bouquet

Get colouring:

  1. Fill half of each glass with water.
  2. Pour half the bottle of your chosen food colouring, one at a time, into each glass of water. You want to achieve a rather concentrated colour so that your flower will have a vibrant hue.
  3. Cut any leaves off your flowers and trim the stems to fit nicely inside your glass. You want some stem sticking out with your flower comfortably resting against the glass.
  4. Pop your clean-stemmed flowers inside the different glasses.
  5. After two hours or so, you will begin seeing slight colours appearing on the edges of the flower petals. When the kids wake up, the flowers should be completely coloured in and looking lovely!
  6. As a fun little extra, kids could also name their new flower species and make little tags for their inventions. Help kids think of names by combining the flower’s botanical name with perhaps their own, other family members, or their pet’s names.
  7. While the kids wait, here’s some neat to know science stuff about how your flowers have soaked up the colour.

Growing Spinach in a Jar Experiment

Our gardeners from Life is a Garden conducted this family-friendly, insightful little seed germination experiment during the lockdown days. Our gardeners set out to grow some spinach in a glass jar, allowing them to enjoy every step of the growing show, from above to below ground. Our gardeners watered each jar differently to determine how much water is too much, too little, and just right. The results may surprise you!

What you need:

  • Large spinach seeds
  • A glass jar
  • Kitchen roll
  • Water
Setting up your seed experiment:

STEP 1:  Get your little-handed scientist to assist you here, by folding and scrunching up a few pieces of kitchen roll. Place the folded kitchen roll inside the perimeter of the glass jar, then stuff the scrunched pieces into the middle.

STEP 2:  Carefully push seeds down into the paper towels around the edge of the jar so they can still be seen. Make sure they are firmly held in place.

STEP 3:  Gently water your seed jar to wet the paper towels. Be careful not to flood it as this spells certain disaster for our seeds.

 

What do you see in your seed jar?
  • You are looking for a root to pop out of the side of the seed.
  • Next, you are looking for roots to push down into the towel.
  • Also, you are looking for root hairs.
  • Next, you are looking for the seed to push up while the root hairs push down.
  • Lastly, you are looking for the shoots to come up.
Our watering findings:

Our gardeners wanted to see how much water would be best for the spinach seedlings. They set up their three jars and measured the same amount of water to be given to each jar. The water quantities were the same; however, the frequency of watering is what made all the difference:

  • Jar one: Watered once a week.