Answer to Question 1In addition to propagation directly from seeds, plants may also propagate through
asexual reproduction which may involve division of roots, cuttings of leaves, stems, or
roots; budding and grafting; and by tissue culture. The advantages of asexual
reproduction are that the result creates an exact duplicate of the existing plant. The
disadvantages include the time involved.
Answer to Question 2Biostimulants stimulate soil microbial activity and improve soil cation exchange
capacity, stimulate plant growth, and promote disease resistance. Root growth
biostimulants improve water and nutrient uptake by the roots and also increase the
number of fibrous roots. Biostimulants can greatly reduce the need for fertilizers,
especially nitrogen, which saves the grower money and reduces water pollution from
excess nitrogen run-off or percolation into ground or stream water.
Phylogeny of modern seedless and seed plants showing critical innovations
The four ways in which animals exchange heat with the environment are radiation, evaporation, convec
Pollen from a variety of common plants
Plants
Plants
Three ways by which chromatin remodelers