Reproduction in Plants Test - 3

New varieties cannot be obtained by self-pollination.

Plants are dioecious, i.e. male and female flowers are borne on separate plants.

After fertilisation, the zygote divides several times to form an embryo within the ovule. The ovule develops tough coating and is gradually converted into a seed. The ovary grows rapidly and ripens to form a fruit.

Cross pollination is better than self pollination. It is an important source of variation in offsprings.

Sowing is not a method of vegetative propagation. The methods of vegetative propagation include cutting, vegetative apomixis, layering, division, budding, grafting, and tissue culture.

Plants that are derived from the vegetative organs of a single plant are known as clones because they have the same genetic composition as of their parent individual.

Sweet potato, asparagus and dahlia is a group of plants which are propagated through underground roots.

Shoot system is formed by scion in grafting, whereas root system is formed by stock. Grafting is a horticultural technique whereby tissues from one plant are inserted into those of another so that the two sets of vascular tissues may join together.

Anther is not a part of a carpel. It is a part of stamen.

The branch of botany comprising the artificial cultivation of cells into mature fruit forming plants is known as tissue culture. Single cells, plant cells without cell walls (protoplasts), pieces of leaves, stems or roots can often be used to generate a new plant on culture media given the required nutrients and plant hormones.

Egg represents the female gamete of angiosperms. Female gametophyte formation is required for sexual and asexual seed development in angiosperms.

The pollination of anther through water is called hydrophily. It can occur in one of two ways. Either the pollen grains themselves are carried on or under the surface of the water, or the male flowers break off and float along until they come into contact with a female flower.

Ovule integument gets transformed into seed coat. It is the outer protective covering of a seed. It is also called testa.

Apple, pear and peach all have seeds. It is only banana that is seedless and has lost the capacity to produce seeds. Banana is mostly propagated by rhizomes and suckers.

In the leaves of Bryophyllum, meristematic marginal notches are present. From these meristematic tissues, new plants can develop after coming in contact of soil. The new plants can detach from the leaves and develop into a full plant after falling on the ground.