121 Plus 9 Biology Experiments

The aim of this exciting labour is to observe the effect that yeast has on a sugar solution.Things Required:1 package of powdered yeast sugarGlassSoda bottleMeasuring spoon-tablespoon (15 ml)Measuring cup (250 ml)10-inch (25 cm) balloon Directions:Mix the package of yeast and 1 spoon of sugar in one cup of warm water. Be sure the water is […]

The fruits we buy in market are not quite ripe. What do we do with them?Things Required:2 unripe peaches, nectarines or otherA brown paper bagYour refrigerator fruit Directions:Place one of the unripe fruits in the crisper of the refrigerator for a day or two. Place the other in the paper bag and close it securely.

In this experiment, we will try to grow a type of fungus called bread mould.Things Required:Zip lock bagBread sliceEye-dropper Directions:Place the bread in the plastic bag. Put 10 drops of water inside the bag. Close the bag.Keep the bag in a dark, warm place for 3 to 5 days. Observe the bread through the plastic.Discard

Do you know that different parts of the same fruit taste different?Things Required:An orange (preferably navel)A knife Directions:Peel the orange. Cut one slice across the stem end and then one across the blossom end. Taste them.This Is What Happens:The slice at the blossom end is sweeter.Science Behind It:The blossom end develops more sugar because it

The purpose of this experiment is to determine why plants grow in sphagnum (peat moss).Things Required:Sphagnum moss (obtain from a garden supply store)Soil (collect from a garden, under a tree, or a vacant lot)2 quart (litre) jarsMeasuring spoon-tablespoon (15 ml)Measuring cup (250 ml)Directions:Pour 1 cup of soil into one jar, and one cup of sphagnum

An apple in the breadbox or cookie jar will affect our bread or cake!Things Required:2 cookie jars or tins1 slice of bread2 slices of apple1 slice of cake (or a cookie)Directions:Place one slice of an apple in a cookie jar with the slice of bread. Place the other in the cookie jar with the slice

Have you wondered what the green stuff you see in rivers is? Well, we will try to grow them in our own lab.Things Required:Clear, glass jarPond water (collect from a lake, pond, or an aquarium that needs cleaning)Pond plant (may be found at a pet store or lake) Directions:Add the water to the jar. Place

Suppose you want a mushy apple!Things Required:2 applesWaterParer (optional)KnifePot with cover1/4 cup of water1 teaspoonful of lemon juice or dash of cinnamon and nutmeg Directions:Wash both apples, peel them and cut them in four sections. Cut away the core and slice each quarter into cubes. Cook the pieces in a small amount of water in

The purpose is to observe the water-absorbing ability of lichens which may be used to explain the north-seeking habit of the plant. Things Required:Glass of waterEye-dropperLichen samples (a pale green scaly or leaf-like crust found on the bark of trees)Microscope or hand lensCompassDirections:Use the compass to determine the direction that the side of the tree

There are hundreds of varieties of apples to choose from. Which do you bite and which do you bake?Things Required:1 red or golden delicious apple1 Rome, York Imperial, Stayman, Winesap or Jonathan apple2 to 3 tablespoonfuls of sugar or raisinsDash of nutmeg (optional)Water Directions:Core both apples and cut away a circle of peel at the

Plants need water, nutrients and sunlight to grow properly. Their growth changes when any one of these three factors is lacking. In this experiment we will try to measure the growth rate of a plant stem grown in the shade.Things Required:2 green onionsGlassSoilRulerMarking pen, red or black Directions:Measure about 6 inches (15 cm) from the

What is growing season, and how does the temperature affect the growth of a plant?Things Required:8 pinto beansPaper towels2 drinking glassesDirections:Prepare both glasses as follows:a. Fold one sheet of paper towel and line the inside of the glass with it.b. Wad the sheets of paper towels and stuff them into the glass to hold the

The sprouts used in salads actually sprout from beans. You can easily sprout your own.Things Required:6 tablespoonfuls of mung beans, chick-peas or lentilsCheeseclothLabels and pencil3 clean glassesWarm waterString or rubber bandsDirections:Cull the beans.Soak 4 tablespoonfuls of the beans overnight in warm water. Then drain them and divide them between two clean glasses. Put a layer

This experiment shows you what propagation is all about. In this experiment, you will see that a new plant develops from the parts of an old plant.Things Required:4 potatoesPotting soilQuart jar (liter jar)Directions:Place the potatoes inside a dark cabinet. Check the skin of each potato daily for small white growths called “eyes”. Ask an adult

Most legumes have a bland flavour. We season and flavour them to make them taste good.Either tomatoes or lemon juice will make legumes tasty. And their vitamin C makes the iron in the beans easier to absorb. But not if our timing is off. Things Required:6 tablespoonfuls of lentils or presoaked beans4 tablespoonfuls of tomato