Plant Propagation Techniques

Used coffee grounds are widely used in gardening and agriculture as a fertilizer and soil amendment. Coffee grounds are rich in nitrogen, potassium, phosphorus, and other minerals that plants need. They help improve soil structure, drainage, and water retention while providing essential nutrients for plant growth.

Coffee grounds and coffee byproducts are indeed used in gardening and plant growth. They contain nitrogen, potassium, and other nutrients that can benefit soil. Coffee grounds can help improve soil structure and provide acidity for certain plants like blueberries and roses.

The statement correctly defines hydroponics. Hydroponics is indeed a soilless cultivation method where plants grow in nutrient-rich water solutions. The technique allows plants to absorb essential minerals and nutrients directly from water, with their roots supported by inert growing media or suspended in the solution itself. This method is widely used in modern agriculture for efficient food production.

Horticulture is the science and art of growing fruits, vegetables, flowers, and ornamental plants. It focuses on garden cultivation and plant propagation. Agriculture is broader (crops+livestock), Pisciculture is fish farming, and Botany is plant science overall.

Sugarcane is commonly propagated through stem cuttings called 'setts' - segments of the stalk with nodes that can grow new plants. Cotton and jute are grown from seeds, while banana is propagated through suckers or tissue culture.

Alleviate means to relieve or reduce something unpleasant, especially pain or suffering. A means spotted or patchy, B is to count items, and D refers to new plant growth.

The correct answer is C (struggle). Contend means to struggle, compete, or fight against difficulties or opposition - for example, contending with adversity or contending for a prize. Unaccustomed (A) means not used to something, detached plant shoot (B) is a scion, and not knowing (D) is ignorance.

A discriminating person is able to see differences and make careful judgments - they have good taste or discernment. It's about being selective and perceptive. Options B, C, and D refer to hairstyles, boasters, and plant cuttings.

The active sentence 'Darjeeling grows tea' becomes 'Tea is grown in Darjeeling' in passive voice. Option A uses 'is being grown' (continuous passive) which is not appropriate. Option D uses active voice 'grows' but changes the subject to Tea, which is grammatically incorrect because tea cannot perform the action of growing itself in this context.

Allografts are taken from different individuals of the same species, Xenografts from different species and Isografts from twins.

It is defined as the process of combining together the parts of 2 different plants of closely related species in such a way that they live as one plant. The prime examples are Rubber, Apple, Pear, etc.

The process of growing plants in sand, gravel, or liquid, with added nutrients but without soil..

This is the correct option. Gladiolus can be multiplied by using the method of vegetative propagation by stem.

This is the correct option. Jasmine can be grown by the method of layering.

This is the correct option. In cutting method of vegetative propagation, short lengths of plant stem or roots are used for growing new plants. In grafting method of vegetative propagation, a desired plant is obtained from two different individuals called stock and scion. In layering method of vegetative propagation, a branch of the plant is buried under the soil and the growing tip is kept above the soil surface.