CBSE +1 Biology

COURSE STRUCTURE
Class XI (Theory)
One Paper Time: 3 Hours 70 Marks
1. Diversity in living world 07
2. Structural organization in animals and plants 10
3. Cell: Structure and function 17
4. Plant physiology 18
5. Human Physiology 18
Total 70
I Diversity in Living World (25 Periods)
Diversity of living organisms
Classification of the living organisms (five kingdom classification, major groups and
principles of classification within each kingdom).Systematics and binomial System of nomenclature
Salient features of animal (non chordates up to phylum level and chordates up to class
level) and plant (major groups; Angiosperms up to subclass) classification.
Botanical gardens, herbaria, zoological parks and museums.
II Structural Organisation in Animals and Plants (30 Periods)
Tissues in animals and plants.
Morphology, anatomy and functions of different parts of flowering plants: Root, stem,
leaf, inflorescence, flower, fruit and seed.
Morphology, anatomy and functions of different systems of an annelid (earthworm), an
insect (cockroach) and an amphibian (frog).
III CELL: STRUCTURE AND FUNCTION (40 Periods)
Cell: cell wall, cell membrane and cell organelles’ (plastids, mitochondria, endoplasmic
reticulum, Golgi bodies/dictyosomes, ribosomes, lysosomes, vacuoles, centrioles) and
nuclear organization.
Mitosis, meiosis, cell cycle.
Basic chemical constituents of living bodies.
Structure and functions of carbohydrates, proteins, lipids and nucleic acids.
Enzymes: types, properties and function.
IV Plant Physiology (40 Periods)
Movement of water, food, nutrients and gases, Plants and Water Mineral nutrition,
Respiration, Photosynthesis, Plant growth and development.
V Human Physiology (45 Periods)
Digestion and absorption.
Breathing and respiration.
Body fluids and circulation.
Excretory products and elimination.
Locomotion and movement.
Control and coordination.
Practicals
Time: 3 Hours Marks : 30 60 Periods
1. Experiments and spotting 20 marks
2. Record of one investigatory project and Viva based on the project 5 marks
3. Class record and Viva based on experiments 5 marks 30 marks
A. List of Experiments
1. Study and describe three locally available common flowering plants from each of the
following families (Solanaceae, Fabaceae and Liliaceae).
2. Preparation and study of T.S. of dicot and monocot roots and stems (normal).
3. Study of osmosis by potato osmometer.
4. Study of plasmolysis in epidermal peels (e.g. Rhoeo leaves).
5. Study of distribution of stomata in the upper and lower surface of leaves.
6. Comparative study of the rates of transpiration in the upper and lower surface of leaves.
7. Test for the presence of sugar, starch, proteins and fats. To detect them in suitable plant
and animal materials.
8. Separate plant pigments through paper chromatography.
9. To study the rate of respiration in flower buds/leaf tissue and germinating seeds.
10. To study effect of different temperatures on the activity of salivary amalyse on starch.
11. To test the presence of urea in urine.
12. To detect the presence of sugar in urine/blood sample.
13. To detect the presence of albumin in urine.
14. To detect the presence of bile salts in urine.
B. Study/observation of the following (spotting)
1. Study parts of a compound microscope.
2. Study of the specimens and identification with reasons-Bacteria, Oscillatoria, Spirogyra,
Rhizopus, mushroom, Yeast, liverwort, moss, fern, Pine, one monocotyledon and one
dicotyledon and one lichen.
3. Study of specimens and identification with reasons-Amoeba, Hydra, Liverfluke, Ascaris,
leech, earthworm, prawn, silkworm, honeybee, snail, starfish, shark, Rohu, frog,
lizard, pigeon and rabbit.
4. Study of tissues, and diversity in shapes and sizes of plant and animal cells (e.g. palisade
cells, guard cells, parenchyma, collenyma, sclerenchyma, Xylem, Phloem, Squamous
epithelium, muscle fibers and mammalian blood smear) through temporary/permanent slides.
5. Study of mitosis in onion root tip cells and animals cells (grasshopper) from permanent
slides.
6. Study of different modifications in root, stem and leaves.
7. Study and identify different types of inflorescences.
8. Study of imbibition in seeds/raisins.
9. Observation and comments on the experimental set up on:
a. Anaerobic respirationb. Phototropism
c. Apical bud removal
d. Suction due to transpiration
10. To study human skeleton and different types of joints.
11. Study of external morphology of earthworm, cockroach and frog through models.