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Periodicity (Phenology, Aspection)
It refers to the study of seasonal changes in the community, that is, the periodic phenomena of organisms in relation to their climate. Periodicity is a strongly fixed characters in plants. Different species of plants have different periods of seed germination, vegetative growth, flowering and fruiting, leaf fall, seed and fruit dispersal, and dissemination of seeds.
Such data for each species in a community is recorded. A study of the data and time of these events is termed as phenology. In other words, phenology is the calendar of events in the life history of a plant. Diagrammatic representation of such events is known as phenograms.
How many cells are in the human body? According to "The Handy Science Answer Book" noted by the Science and Technology Department of the Carnegie Library of Pittsburgh (1994) th
Agroup of realated genera are classified as-?
Which of the following statements about how B and T cells recognize antigen are true? a. B cells only recognize antigen presented by class I or class II MHC molecules. b. Both cell
Hypertensive emergencies are one of the important categories of hypertension and characterized by severe elevations in BP that are complicated by evidence of progressive target org
explain in detail various types of epithelial tissue
Nitrogen Fixation Nitrogen is an essential constituent of living organisms and there is an inexhaustible supply of it in the atmosphere in the free form. Majority of living o
What is the main function of chloroplasts? Ans) Chloroplasts are organelles represent in the cytoplasm of plant and algae cells. Similarly mitochondria, chloroplasts have two bo
Q. What are the major events of the third mitotic period? The third mitotic period is anaphase. In anaphase the following events occur breaking and duplication of centromeres w
Q. What is mitotic apparatus? Mitotic apparatus is the set of aster fibers, radial structures around each centriole pair, plus the spindle fibers, fibers that extend across the
Is pathology a subspecialty of zoology or botany?
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