Class 12th Biology Notes Free PDF For All Chapters
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Class 12th Biology Notes For Which Board?
These F.Sc Class 12th Biology Notes are for Punjab Boards and can be helpful for Federal Board (FBISE), and entry tests like MDCAT, NUMS and ETEA.
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Class 12th Biology Notes Chapters
Chapter 15 –Homeostasis
The
protection of the internal environment from the harms of fluctuations in the external
environment is termed homeostasis.
When you have a high fever it causes a metabolic change that can push the fever ‘ higher and higher. – An Extraction from the Notes.
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Chapter 16 -Support And Movement
The thick filament which is about 16 mm in diameter is composed of myosin. Each .myosin molecule has a tail terminating in two globular heads. – An Extraction from the Notes.
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Chapter 17 -Coordination And Control
All
the aspects such as organization, regulation, integration and control in the
constitution and work of the complex multicellular animals come under the fold
of the term coordination.
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Chapter 18 -Reproduction
An anti-sperm antibody test looks for special proteins (antibodies) that fight against a man’s sperm in blood or semen. The test uses a sample of sperm and adds a substance only to the affected sperm. Semen can cause an immune response in- either man’s or a woman’s body.- An Extraction from the Notes.
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Chapter 19-Growth And Development
In higher plants, growth is limited
o certain regions known as growing points e.g., shoot apex and root tip.
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Chapter 20 -Chromosome And DNA
A typical chromosome consists of two strands called chromatids; each is made up of a long DNA molecule which is highly coded along with histone proteins.
The
dispersive model predicted that parental DNA would become dispersed throughout
the new copy so that each strand of all the daughter molecules would a mixture
of old and new DNA.– An Extraction from the Notes.
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Chapter 21 -Cell Cycle
The cell undergoes a sequence of changes, which
involve a period of growth, replication of DNA followed by cell division. This
sequence of changes is called the cell cycle.– An Extraction from the Notes.
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Chapter 22 -Variation and Genetics
Phenotype
is the form of appearance of a trait. Genotype is the genetic complement i.e.,
the genes in an individual for a particular trait.
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Chapter 23-Biotechnology
Genetically
engineered bacteria have been used to clean up environmental pollutants,
increase the fertility of the soil and kill insect pests. Transgenic
animals are cloned in order to obtain the product in large quantities.– An Extraction from the Notes.
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Chapter 24 -Evolution
The tissue first influence inducing the development of a secondary embryo in the host. They termed this inductive event as primary induction because they believed it to be the first inductive event in development. – An Extraction from the Notes.
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Chapter 25 -Eco System
The process through which different chemicals circulate between the environment and living
organisms in the form of a cyclic way is called the biogeochemical cycle. Or
The
back-and-forth movements of chemical elements between organisms and the environment
along particular circular paths are known as biogeochemical cycles.– An Extraction from the Notes.
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Chapter 26 -Some Major Eco System
The angular distance on a meridian(circle
passing through poles) north or south of the equator, expressed in degrees and
minutes is called latitude. While height in relation to the equator is called
altitude.– An Extraction from the Notes.
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Chapter 27 -Man His Environment
The process through which acid falls on Earth either dissolved in rain or as microscopic dry
particles are called acid rain.– An Extraction from the Notes.
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Apart from the 12th Class Biology Notes, We have other subject notes of class 12 that can help you to get higher marks in the examination.
- Physics Notes For Class 12
- 12th Class English Notes
- Chemistry Notes For Class 12
- Second-Year Physics MCQs
- Chapter Wise Tests Of 12th Class
Editable Word files of Class 12 Biology Notes are also available at a reasonable price.
How to Use the Class 12th Biology Notes PDF?
- Create a Study Plan: Use the notes to create a study plan that covers all topics included in the second-year computer science curriculum.
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