Practice free Growth and Development in Plants (Botany) NEET multiple-choice questions online with instant answers and detailed explanations. No login required.
How gibberrelin accelerates seed germination ? (AIIMS 2005)
Gibberellins promote seed germination by stimulating the synthesis of hydrolytic enzymes, such as amylase, that break down stored food reserves in the seed into simpler molecules. These simpler molecules are then used for the growth of the embryo, facilitating seed germination.
Which hormone is responsible for bolting ?
Gibberellins are a group of plant hormones that play a key role in promoting stem elongation, germination, and flowering. Bolting, which is the rapid elongation of the stem in plants such as lettuce or spinach, is primarily induced by gibberellins.
Which hormone is synthesized by root and endosperm?
Cytokinins are a class of plant hormones that are synthesized in the roots and transported to various parts of the plant. They are also found in the endosperm of seeds. Cytokinins promote cell division and growth, and they play a crucial role in plant development.
Which hormone is responsible for growth of leaf-apex ?
Indole-3-acetic acid (IAA) is a type of auxin, which is a plant hormone responsible for various growth and behavioral processes in the plant's life cycle. Auxins like IAA are involved in the elongation of cells in the shoot and are particularly influential in the growth of the leaf apex.
How can a biannual plant be converted into an annual plant?
A biennial plant can be converted into an annual plant by subjecting its seeds to a cold treatment, a process known as vernalization. This treatment accelerates the flowering process, making the plant complete its life cycle in one year instead of two.
Which of the following is increased in plants as a result of growth ?
As plants grow, one of the key metrics that increases is the dry weight. Dry weight refers to the mass of the plant minus its water content. As the plant undergoes photosynthesis and produces more biomass, its dry weight naturally increases.
In which phase of growth size of vacuole increases ?
The size of the vacuole increases during the cell elongation phase. During this phase, cells undergo significant growth in their size, and vacuoles take up more water and expand, causing the cell to elongate.
What is the optimum temperature for growth of the plants ?
Which apparatus is used for exact measuring of growth of plants in longitudinal axis ?
Growth regulators are chemically ........
Growth regulators, also known as plant hormones, are organic chemicals. They play a crucial role in regulating various physiological processes in plants, including growth, development, and responses to stimuli.
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