Preparation under a microscope to observe onion cell

the study the composition of non living things

to show the presence of carbon-dioxide in the breathed out air

to study response stimuli

to observe bacteria

to observe bread mould

to study the structure of seeds

to study the relative proportion of solid particles (partical size) in a soil sample

to determine the amount and presence of water in soil sample

to find out the amount of water retained by the different types of soils like sandey,clayey and loamy

to observe the presence of organism in oil

to demonstrate the presence of micro-organism in the soil

to observe tap roots and fibrous roots

to show that roots absorb water

to study the path of water ina plant

to demonstrate the presence of stomata

to demonstrate that water is given off during transpiration

to study pollen grains with developing pollen tubes

to demonstrate that sun light is necessary for plants to make food

to demonstrate that water is necessary for normal growth of plants