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Heredity and Variation in Asexual Reproduction
If all offspring were exactly like their parents, there would be no science of genetics. Variations a
Pollution:-
Any undesirable change in composition of environment which is harmful for living organism.
Causes of po
Air Pollution:-
Any undesirable change in composition of air which is harmful for living organism.
Causes of air pollutio
Water pollution:-
Any undesirable change in composition of water which is harmful for living organism.
About 99.9% water is pure, only 0.1% impurity make unfit for domestic purposes.
0.1% impurity include:
1. Suspen
Acid Rain:- It is a secondary pollutant. It is formed due to action of 1o pollutant with environmental failure. Automobile exhaust and burning of f
(e) Ecotone and edge effect:-
It is transistional zone between two adjacent community.
Crystalline Solids:
Amorphous solids are very useful but most of the solids are crystalline in nature due to thermodynamically favorable conditions
Forestation:- growing of true on based area, or previously sterile area .
Aforestation :- growing of trees along with tree i.e. it
Responses to Abiotic Factors
The organisms try to maintain the constancy of its internal environment (a process called homeostasis)
Introduction:
All living things need energy for all metabolic activities:
SEXUAL REPRODUCTION involves formation of male and female gamates, either by the same individual or different individuals of opposite sex.These gametes
Post Fertilization Events:
Events in sexual reproduction after the fertilization (formation of zygote) are called post fertilization events. These events may be d
Plant Breeding:
Plant breeding is the useful changes in the plant species with desirable characters in order to create plant types that are suitabl
Single cell protein:
It is a protein derived from the culture of single-celled organisms, especially used as a food supplement. Microbes like
Micro-organisms: Microbes are tiny living organisms—too tiny to see without a microscope, yet they are abundant on Earth. They live everywhere&mdas
Microbes as bio-fertilizers:
Bio-fertilizers are the micro-organisms which increases the nutrient quality of soil. The main source
Noise:-
It is high intensity of undesirable sound. It is measured in desirables (dB).
Important:- More than 150dB soun
EI NINO EFFECT:- In tropical pacific ocean, temp. of water increases very sharply upto 80oC and causes mortality in aquatic organism over 1000km, it is hot water current flowing from equator to pole, It regulates the monsoon effect.
Level of Bio-Diversity:-
Genetic Biodiversity:-
Genetic variation increases with increases i
Method of conservation of Bio-diversity:-
Insitu conservation:-
It em
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