Upper Level Biology: Reproduction in Plants

THE SLIDE SHOW FOR PLANT REPRODUCTION CAN BE DOWNLOADED HERE!

YOU NEED TO KNOW HOW TO:

Define sexual reproduction as the process involving the fusion of haploid nuclei to form a diploid zygote and the production of genetically dissimilar offspring.
Identify and draw, using a hand lens if necessary, the sepals, petals, stamens and carpels of one, locally available, named, insect-pollinated, dicotyledonous flower, and examine the pollen grains under a light microscope.
State the functions of the sepals, petals, anthers and carpels;
Use a hands lens to identify and describe the anthers and stigmas of one, locally available, named, wind-pollinated flower, and examine the pollen grains under a light microscope;
Outline the process of pollination and distinguish between self-pollination and cross-pollination;
Compare, using fresh specimens, an insect-pollinated and a wind-pollinated flower;
Describe the growth of the pollen tube and its entry into the ovule followed by fertilisation (production of endosperm and details of development are not required);
Investigate and describe the structure of a non-endospermic seed in terms of the embryo (radicle, plumule and cotyledons) and testa, protected by the pericarp (fruit wall);
State that seed and fruit dispersal by wind and by animals provides a means of colonising new areas;
Describe the external features of one, locally available, named example of a wind-dispersed fruit or seed and of one named example of an animal-dispersed fruit or seed;
Investigate and state the environmental conditions that affect germination of seeds: suitable temperature, water and oxygen;
Describe the uses of enzymes in the germination of seeds;