The subject of Biology plays an important role in developing
well-defined abilities in cognitive, affective and psychomotor
domains in children. It augments the spirit of enquiry,
creativity, objectivity and aesthetic sensibility.
Upper primary stage demands that a number of opportunities should
be provided to the students to engage them with the processes of
Science like observing, recording observations, drawing,
tabulation, plotting graphs, etc., whereas the secondary stage
also expects abstraction and quantitative reasoning to occupy a
more central place in the teaching and learning of Biology.
There will be an Annual examination based on
The annual examination will be of 80 marks and
20 marks weightage shall be for internal
Out of 80 marks annual examination 68 marks
weightage shall be for theory and 12 marks
weightage shall be for practical based
For internal assessment
There will be three periodic tests
conducted by the school. Average of the
best two tests to be taken that will
have a weightage of 10 marks towards the
Practical / Laboratory work should be
done throughout the year and the student
should maintain record of the same.
Practical Assessment should be
continuous. There will be weightage of 5
marks towards the final result. All
practical listed in the syllabus must be
Regularity, class work and home
assignment completion along with
neatness and upkeep of notebook will
carry a weightage of 5 marks towards the
Course Structure Class X
Annual Examination - Marks: 80
Chemical Substances-Nature and behavior
World of Living
Effects of Current
Note: Above weightage includes the weightage of
questions based on practical skills.
Unit II: World of Living
Life processes: 'Living Being'. Basic
concept of nutrition, respiration, transport and excretion
in plants and animals.
Control and co-ordination in animals and
plants: Tropic movements in plants;
Introduction of plant hormones; Control and co-ordination in
animals: Nervous system; Voluntary, involuntary and reflex
action; Chemical co-ordination: animal hormones.
Reproduction: Reproduction in animals and
plants (asexual and sexual) reproductive health-need and
methods of family planning. Safe sex vs HIV/AIDS. Child
bearing and women's health.
Heredity and Evolution: Heredity; Mendel's
contribution- Laws for inheritance of traits: Sex
determination: brief introduction; Basic concepts of
Unit IV: Our Environment
Natural resources: Air, Water, Soil. Air for
respiration, for combustion, for moderating temperatures;
movements of air and its role in bringing rains across
India. Air, water and soil pollution (brief introduction).
Holes in ozone layer and the probable damages. Bio-geo
chemical cycles in nature: Water, Oxygen, Carbon and
Unit V: Natural Resources
Our environment: Eco-system, Environmental
problems, Ozone depletion, waste production and their
solutions. Biodegradable and non-biodegradable substances.
Management of natural resources:
Conservation and judicious use of natural
resources. Forest and wild life; Coal and Petroleum
conservation. Examples of people’s participation for
conservation of natural resources. Big dams: advantages and
limitations; alternatives, if any. Water harvesting.
Sustainability of natural resources.
List Of Experiments
Preparing a temporary mount of a leaf peel to show
Experimentally show that carbon dioxide is given out
Studying (a) binary fission in Amoeba, and (b) budding
in yeast and Hydra with the help of prepared slides.
Identification of the different parts of an embryo of a
dicot seed (Pea, gram or red kidney bean).
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