(a) The given figure is of Bryophyllum leaf. It is also called as sprout leaf plant.
(b) It shows vegetative reproduction by leaves.
(c) The leaves of Bryophyllum develops some buds in its margin or edges which grow into new plants when buried in the soil.

(a) When food items like bread and fruits are kept outside for a long time especially during rainy season, a cottony growth of bread mould, a fungus is observed.
(b) This growth of fungus takes place by spores present in air, which when comes in the contact with moisture in bread germinates and grow to produce new cells.

The differences between self-pollination and cross-pollination are

Sexual reproduction is a process of formation of new individuals by involving two parents or gamete formation. In sexually reproducing plants, new plants are produced from seeds.
In this method, gametes fuses to form zygote that gives rise to new individual.

Different methods of asexual reproduction are:
(i) Fragmentation Parent body divides into distinct pieces or fragments, each of which grows into new individuals, e.g. Spirogyra (an alga).
(ii) Budding A small part of parent body grows out as a bud, which detaches and becomes a new individual. Sometimes, a chain of buds is also formed, e.g. yeast, corals, sponges, etc.
(iii) Spore formation Parent plant develops and releases thousands of tiny, spherical and unicellular asexual spores, which are protected by a cell wall. When these spores find favourable environment, they grow into identical new plants, e.q. mosses, ferns, bread moulds, etc.
(iv) Vegetative propagation Many plants like cacti, potato, rose, sugarcane, etc., reproduce by this method. New plants are produced from vegetative parts of mother plant such as roots, stem, buds and leaves.

Mature ovary forms the fruit.

The reproductive part of a plant is the flower.

Vallisneria and Hydrilla.

The male reproductive part is stamen and the female reproductive part is pistil.

Unisexual flowers are those which contain either male or female reproductive part and bisexual flower has both reproductive parts (i.e. male and female) on the same flower.

The four main parts of a flower are
(i) Sepals
(ii) Petals
(iii) Stamen
(iv) Pistil.

The process of reproduction is necessary for the perpetuation and preservation of species and to increase the number of members of species.

(a) Vegetative propagation is the process of reproduction in which new plants are produced from different parts of old plants like stem, roots or leaves.
(b) Cutting and grafting method are two methods where stem is used for vegetative propagation.
(c) Mango and rose are two plants cultivated using vegetative propagation.
This is an asexual method of reproduction.
(d) Ria is curious, inquiring who wants to gain knowledge about process occurring around here.

(a) The given figure shows grafting method (vegetative reproduction),
(b) Mango and rose are the two plants where this method of vegetative takes place,
(c) It is asexual method of reproduction,
(d) (A) Scion
     (B) Stock.