Subjective And Short Questions For Growth & Plant Hormones
sanaMODEL SUBJECTIVE QUESTIONS: What is growth? Discuss its different aspects. What is meristem? Gives its types. Give roles of Auxins in plant growth. Give role of gibberellins in growth. Give…
DEFINITIONS AND KEY POINTS FOR Growth & Plant Hormones
Terms Definitions Growth : The quantitative increase in plant body is called growth. Meristem: Meristents are young tissues or group of cells that retain the potential…
Plant Tissue Culture
The in vitro cultivation of any part of plant in nutrient medium is called tissue culture. German botanist Gottlieb Haberlandt said in 1902 that plant cells are totipotent. lot potent…
ETHYLENE
Smoke was used for ripening of bananas in old time. Later it was found that smoke contain ethylene. It was found that this gas is also produced by the plant.…
Abscisic Acid (ABA) and its role in plant growth
P.F. Wareing in U.K. and F.T. Addicott in USA in 1961 discovered growth inhibiting hormone. It was named abscisic acid (ABA). Abscisic acid was discovered from the leaves of Acer…
CYTOKININS
Cytokinin stimulates the cell division in plants. It has following history of discovery: Earlier, it was believed that coconut milk contain cell division causing factors. The developing endosperm of maize…
GIBBERELLINS
Gibberellin was discovered by Kurosawn in 1928. He observed that a rice. plant was infected by the fungus Gibberella. It showed excessive stein elongation. The symptom is called "Bakanae- disease.…
PLANT HORMONES
The special substances produced by the plants which influence the growth and plant responses are called plant hormones. Plant hormones are auxins, gibberellins, cytokinins, abscisic acid and ethylene. AUXINS The…
GROWTH
The quantitative increase in plant body is called growth. Following processes are involved in the growth and development of plants: Cell division Cell elongation Differentiation of cells into tissues and…
Objective Questions of Nitrogen Metabolism
Multiple Choice Questions (MCQs) Which of the followings is an anaerobic bacterium? (a) Azotobacter (b) Nitrobactor (c) Clostridium (d) None Which of the followings is non-aerobic bacterium? (a) Azotobacter (b)…