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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 reaction is observed in droping of drocera due to insects ?
The reaction observed in Drosera (sundew) plants when they encounter insects is called thigmonasty. Thigmonasty is a type of nastic movement that occurs in response to touch or mechanical stimuli. When insects land on the sticky tentacles of Drosera, the tentacles rapidly curl around the prey, facilitating its digestion.
What is responsible for opening and closing of tulip flower ?
The opening and closing of tulip flowers are controlled by thermonasty, which is a type of nastic movement induced by changes in temperature. Tulip flowers open in response to warmer temperatures and close when it gets cooler.
By which reaction growth of cuscuta occurs on host plant ?
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 ?
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The bank mixes NEET previous year questions (PYQs) with practice questions, each tagged with its exam appearances where applicable.