MODEL SUBJECTIVE QUESTION: What is population? Give its characteristics. Give history and background of population growth. Write note on seed dispersal. What is demography? Give its different aspects. Give applications…
It took a long time for plants to develop proper roots and vascular system for land dwelling. These carry water drawn through roots to all parts of their bodies -…
TERMS DEFINITIONS Population The number of individuals of specie living in the same area at the same time is called population. Monospecific Population of only one specie living in the…
The forces which bring about evolutionary changes by natural selection are called evolutionary forces. These forces are random genetic drift, gene flow and mutation. 1. Genetic drift The change in…
The basis of reproductive strategies is the survival of plant in particular habitat. These reproductive strategies are developed by natural selection. Every organism reproduces to maintain their specie. Each organism…
The study of the vital statistics that affect population size is called demography. Birth rate and death rate vary among subgroups within a population. This birth rate and death rate…
The storage of seed in the soil is called seed bank. Seeds fall on the soil. They are buried in the soil. Some seeds germinate to form the new plants.…
Seed is an important source of dispersal of species of a plant to other places. Seeds are dispersed to far off places. Thus the genes of a population of plant…
The number of individuals of specie living in the same area at the same time is called population. Population has two aspects: number of individuals of a specie and area…
CRUCIFERAE (Mustard family) Diagnostic characters Habit: Annual, biennial or perennial herbs Roots: Tap root (fibrous or tuberous) Stem: I lerbaceous. cs indrical. Leaves: Petiolate. alternate, simple, exstipulate, reticulate venation, leaves…
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