Practice free Botany NEET multiple-choice questions online with instant answers and detailed explanations. No login required.
Which is natural growth inhibitor or senescence inducing hormone ?
Abscisic acid (ABA) is a natural growth inhibitor and senescence-inducing hormone. It plays a key role in processes such as leaf abscission, seed dormancy, and response to environmental stress, which are all associated with the aging and senescence of plant tissues.
Which hormone affects the growth of plant in adverse climatic / environmental condition ?
Abscisic acid (ABA) is a plant hormone that plays a crucial role in helping plants respond to adverse environmental conditions such as drought, cold, and salt stress. It helps in regulating stomatal closure to reduce water loss and induces the expression of stress-responsive genes.
Which hormone inhibits formation of new cells ?
Abscisic acid (ABA) inhibits cell division and growth in plants. It plays a role in maintaining seed dormancy and can suppress the formation of new cells, thereby inhibiting plant growth under stressful conditions.
Which of the following is responsible for seed dormancy ?
Abscisic acid (ABA) is responsible for inducing and maintaining seed dormancy. It prevents seeds from germinating under unfavorable conditions by inhibiting the growth of the embryo within the seed.
Name the hormone responsible for activity of chlorophyll in leaves.
Which of the following is simple, volatile hormone ?
Ethylene is a simple, volatile hormone that is involved in various processes such as fruit ripening, leaf abscission, and stress responses. It is a gaseous hormone, which makes it volatile.
Which of the following statement about ABA is inappropriate ?
Abscisic Acid (ABA) does not induce ripening of fruit. Instead, it primarily inhibits seed germination, induces dormancy of buds, and closes stomata. Ethylene is the hormone responsible for fruit ripening.
Which hormone is absent in dormnant seed ?
Which of the following statement is true for abscisic acid ?
What is called the effect of daylight on plant ?
Photoperiodism is the physiological reaction of organisms to the length of day or night. It is most commonly observed in plants, where it affects flowering and other developmental processes.
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