Plant Reproduction (XII)

Vegetative reproduction is a form of asexual reproduction where new plants grow from vegetative parts of the parent plant.

The fusion of male and female gametes results in the formation of a zygote, which is the first cell of a new organism.

Vegetative propagation can occur through various plant parts, including roots, stems, and leaves, which are all capable of regenerating a new plant.

Tissue culture techniques allow for the production of synthetic seeds, which are encapsulated somatic embryos used for plant propagation.

In grafting, the scion is the upper part of the plant that is attached to the stock (the rooted base).

Tapioca, Asparagus, and Dahlia are all examples of plants that can be propagated through their roots (tuberous roots).

 Kalanchoe plants are propagated through roots and Bryophyllum reproduce by vegetative propagation through leaves.

Germ cells are the reproductive cells, which include both male gametes (sperm/pollen) and female gametes (eggs/ovules).

Grafting techniques include bud, crown, approach, tongue, and wedge grafting. Since all listed pairs are valid types, 'All the above' is correct.

Root cuttings are a common propagation method for both lemon and tamarind plants. Therefore, both 1 and 2 are correct.

The stamen is the male reproductive organ of a flower, consisting of an anther and a filament. It produces pollen grains.

A stamen is composed of two main parts: the pollen-bearing anther and the supporting stalk called the filament.

Cutting and layering are both well-known artificial methods of vegetative propagation. Since multiple options are correct, 'All the above' is the intended answer.

Parthenogenesis, sporophytic budding, polyembryony, and apomixis are all recognized special or asexual modes of plant reproduction.

The typical angiosperm anther is dithecous, meaning it is bi-lobed, with each lobe containing two pollen sacs.

In Agave, vegetative buds (bulbils) develop in the inflorescence, which is the flower-bearing part of the plant.

Gootee, also known as air layering, is a common technique used for propagating woody plants like lemon, orange, guava, and litchi.

The pollen grain wall consists of two layers: the outer exine and the inner intine.

The typical anther wall consists of four layers: epidermis, endothecium, middle layers, and tapetum.

Grafting is a widely used horticultural technique for propagating many fruit trees, including mango, apple, and citrus.

There are many different types of grafting (e.g., wedge, crown, approach, tongue, bud), so 'more than two' is the correct description.