Biology

• Investigating a flower
• Are all flowers hermaphrodite?
• What are monoecious and dioecious plants?
• Investigating a honey bee
• Microscopes
• Working with a microscope
• The hairs of a honey bee
• The antennae of a honey bee
• The wings of a honey bee
• The legs of a honey bee
• The sting organs of a honey bee
• What are the bodies of living things made of?
• What gives so many plants or parts of plants their green colour?
• About plant skins
• Cells from the oral mucous membrane
• About bone structure and strength
• Body heat
• Single celled organisms

• From seed to plant
• What do seeds need for germination?
• Swelling
• Why doesn't seed grow in flooded fields?
• Why are carrots and peas sown in March but beans and cucumbers not until May?
• Germination and light
• Why don't seeds germinate while still inside the fruit?
• What are seed leaves for?
• What is a plant's seed made of?
• Why do cut flowers wilt if they are not put in water and pot plants wilt if they are not watered?
• Defence against evaporation
• Why don't vegetable plants grow well if they have poorly developed roots?
• Why can all parts of a plant be rapidly supplied with water ?
• Vascular bundles
• What does a plant need to build up starch?
• What is the significance of the green pigment in leaves?
• Investigating bulbs and seeds

TESS Biology Box 1               13296-88

• Soil particle size
• Soil minerals
• Soil pH
• Soil's capacity to retain water
• Dust
• Pollution from uncontrolled waste incineration
• Tars in tobacco smoke
• Contamination of groundwater by impurities
• The effect of mineral oil on drinking water

• Foods and nutrients
• Which foods contain starch?
• Which foods contain sugar?
• Which foods contain fat?
• Proteins
• Digestion in the mouth
• Digestion in the stomach
• Easy and hard to digest proteins
• What does bile do?
• Digestion in the intestine
• Easy and hard to digest fats

TESS Biology Box 2               13297-88

• Observing our respiration
• Why do we need to breathe?
• Do we also excrete anything from our bodies during respiration?
• Respiration rate and heart rate
• Blood cells
• Osmotic behaviour of red blood cells

• How can you recognise the other players in blind man's bluff?
• Why does a cellar feel warm in winter but pleasantly cool in summer?
• Our sense of smell
• Why does most food taste quite similar and bland when you have a cold?
• Can we use the whole surface of our tongues to taste things?
• How do you know which way to look when someone calls your name?
• How do we know if something is quite nearby in front of us or further away?
• Adaptation
• The blind spot
• Optical illusions
• The responses of algae to light

• Assimilation starch and reserve starch
• Plasmolysis and deplasmolysis
• Osmotic coefficient
• Chloroplasts
• Chloroplast pigments
• Photosynthesis and carbon dioxide
• Oxygen excretion during photosynthesis
• Root hairs
• The distribution of stomata on leaves
• The distribution of stomata and the habitats in which plants live
• Flower pigments
• Oxygen binding by means of bacteria

• Asexual propagation by budding
• Asexual propagation by zoospores
• Sexual propagation by oogamy
• Sexual propagation by conjugation (zygnematales)
• The development of plant embryos
• The division of cells and nuclei
• Spore dispersal
• Seed dispersal

Student experiments in biology              01845-02