The mode of reproduction in potatoes, ginger and turmeric is vegetative propagation from the nodes. Vegetative propagation is a type of asexual reproduction in which new plants are produced from the vegetative parts like stems, roots and leaves.

Some plants like castor have fruits that burst with sudden jerks and scatter the seeds. Hence the statement is correct. This is, in fact, a form of seed dispersal in such plants.

The pistil is the female reproductive part of a flower. It consists of the stigma, style, and ovary. Anther is the part of a stamen (male organ) that contains the pollen. Hence I, III and IV are components of a pistil.

Plants produced by vegetative propagation are exact copies of their parent. This is a type of asexual reproduction. Such plants also take less time to grow, and mature, that is, they bear fruits faster than those produced by sexual reproduction.

Budding is a form of asexual reproduction in plants. The new plant develops from an outgrowth or bud due to cell division at one particular site. The offspring remains attached to the parent plant as it grows until it is mature. The offsprings are identical to the parent plant. Yeast reproduces with the help of this method.

Pollen grains contain male gametes and are produced by anther. The male gamete fuses with the female gamete to produce zygote and eventually a new seed, during a process known as fertilization.

Spore formation is a type of asexual reproduction. A spore is a reproductive body found in bacteria, fungi, various plants and some protozoans, that can develop into a new individual. Hence statement I, III  and IV are correct.

Pollination is defined as the act of transferring pollen grains from the male part, specifically the anther of a flower to the female part, specifically the stigma. Agents of pollination include insects, wind and water.