CONTROL OF BEHAVIOR
abidaInternal mechanism of control of behavior is composed of nervous system and the endocrine system. It regulates animal behavior. These systems receive information from the external environment through sensory organs.…
DEVELOPMENT OF BEHAVIOR
Development of a normal behavior pattern requires genes. These genes code for the development of structures and organs involved in the behavior. For example, normal locomotion of vertebrates requires limbs.…
ANIMAL BEHAVIOUR
FOUR APPROACHES TO ANIMAL BEHAVIOR Naturalists and philosophers observed animal behavior for centuries. But understanding of this behavior was developed in last century. There are different approaches to study behavior.…
MORPHOLOGICAL CHARACTERS OF FRUITS
sidraThe ripend overy containing seeds is called fruit. some fruits are without seeds for example banana. These fruits are called parthencarpic. A. Simple Fruits The fruits formed from a single…
ESTABLISHMENT OF VARIETIES
rubabA population of plants that differ consistently from the typical form of the species, occurring naturally in a geographical area is called plant variety. In botanical nomenclature, variety is a…
PLANT BREEDING
Plant breeding Is the purposeful manipulation of plant species in order to create J. 91 genotypes and phenotypes for specific purposes. This manipulation involves either controlled pollination, genetic engineering, or…
History of ecology
sanaMan always has utilized environmental information to collect food, trap animals, find edible plants, sow seeds, harvest his crops and at times, to migrate towards favourable habitat. The history of…
Chapter : 3 MULTICELLULAR & TISSUE LEVEL ORGANIZATION
saadiaMULTICELLULAR & TISSUE LEVEL ORGANIZATION EVOLUTIONARY PERSPECTIVE The scientists and common people are much interested in the multicellular level of organization. The swimmers of the tropical water have found Physalia…
HYBRIDIZATION
The organism produced as a result interbreeding between two animals or plants of same taxa or different taxa is called hybrid. The process of hybrid formation is called hybridization. There…
Mutagens – Types , Selection and Significance
Definition: A mutagen is a substance or agent that induces heritable change in cells or organisms. Mutagenesis is the processes that result in genetic change. A mutation is any change…