This image is a stained view of onion leaf cells taken by a student using a light microscope. The cells form one layer on the outside of the leaf. Some pair...

Fig. 1 shows leaves from two tomato plants in a greenhouse. Plant A has pale mottled leaves and curled edges. Plant B is healthy. A grower suspects a viral d...

Fig. 1 shows a mountain rescue volunteer after carrying equipment uphill on a cold island. Sensors in the skin and in the blood detect a fall in body tempera...

The diagram in Fig. 1 shows a dog breeder comparing coat types in a litter. The mother and father both have short coats, but one puppy has a long coat. The b...

The table below records a trial on a coastal barley farm. Wind had carried fungal spores from an infected field onto young plants. Two barley varieties were ...

The diagram shows tomato plants used by a university team studying shelf life. One group of plants has been genetically modified so that their fruits make le...

The figure shows a pathologist examining an artery from a patient with coronary heart disease. Fatty material has built up in the artery wall. This makes the...

A laboratory uses Fig. 1 to show students how identical lambs can be produced from cells of a prize ewe. The nucleus is removed from an unfertilised egg cell...

Fig. 1 shows a section through a leaf collected from a young bean plant growing beside a greenhouse window. The student used the section to compare the cells...