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Class Xii Biology (044) (2018-19) (Practicals)

This document outlines the evaluation scheme and list of experiments for Class XII Biology (044) practical exams for the 2018-19 school year. It includes: 1) An evaluation scheme with 7 questions and a total of 30 marks. The questions cover one major experiment, one minor experiment, slide preparation, spotting 7 specimens, and practical record and viva voce. 2) A list of 10 major experiments covering topics like pollen germination, soil analysis, water quality testing, air pollution analysis, and plant population studies. 3) A list of 11 spots or specimens that can be identified, including flower pollination, mitosis, meiosis, genetic inheritance, and disease-causing

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394 views1 page

Class Xii Biology (044) (2018-19) (Practicals)

This document outlines the evaluation scheme and list of experiments for Class XII Biology (044) practical exams for the 2018-19 school year. It includes: 1) An evaluation scheme with 7 questions and a total of 30 marks. The questions cover one major experiment, one minor experiment, slide preparation, spotting 7 specimens, and practical record and viva voce. 2) A list of 10 major experiments covering topics like pollen germination, soil analysis, water quality testing, air pollution analysis, and plant population studies. 3) A list of 11 spots or specimens that can be identified, including flower pollination, mitosis, meiosis, genetic inheritance, and disease-causing

Uploaded by

ANMOL
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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Download as PDF, TXT or read online on Scribd
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CLASS XII BIOLOGY (044)(2018-19) (PRACTICALS)

Time: 3 Hours Max. Marks: 70

Time allowed: 3 Hours Max. Marks: 30


EVALUATION
SCHEME

Q1 One Major Experiment 5 Marks


Q2 One Minor Experiment 4 Marks
Q3 Slide Preparation 5 Marks
Q4 Spotting (7 Spots) 7 Marks
Q5 Practical Record + Viva Voce 4 Marks
Q6 Project Record + Viva Voce 5 Marks
Q7 Total 30Marks
A. LIST OF EXPERIMENTS 60 Periods
1. Study pollen germination on a slide.
2. Collect and study soil from at least two different sites and study them for texture, moisture
content,pH and water holding capacity. Correlate with the kinds of plants found in them.
3. Collect water from two different water bodies around you and study them for pH, clarity and
presence of any living organism.
4. Study the presence of suspended particulate matter in air at two widely different sites.
5. Study the plant population density by quadrat method.
6. Study the plant population frequency by quadrat method.
7. Prepare a temporary mount of onion root tip to study mitosis.
8. Study the effect of different temperatures and three different pH on the activity of salivary
amylase on starch.
9. Isolate DNA from available plant material such as spinach, green pea seeds, papaya, etc.
B. Study/observation of the following (Spotting)
1. Flowers adapted to pollination by different agencies (wind, insects, and birds).
2. Pollen germination on stigma through a permanent slide.
3. Identification of stages of gamete development, i.e., T.S. of testis and T.S. of ovary through
permanent slides (from grasshopper/mice).
4. Meiosis in onion bud cell or grasshopper testis through permanent slides.
5. T.S. of blastula through permanent slides (Mammalian).
6. Mendelian inheritance using seeds of different colour/sizes of any plant.
7. Prepared pedigree charts of any one of the genetic traits such as rolling of tongue, blood groups,
ear lobes, widow's peak and colour blindness.
8. Controlled pollination - emasculation, tagging and bagging.
9. Common disease causing organisms like Ascaris, Entamoeba, Plasmodium, any fungus causing
ringworm through permanent slides or specimens. Comment on symptoms of diseases that they
cause.
10. Two plants and two animals (models/virtual images) found in xeric conditions. Comment upon
their morphological adaptations.
11. Two plants and two animals (models/virtual images) found in aquatic conditions. Comment
upon their morphological adaptations.

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