CBSE Class 12 Biology Revision Worksheet Set B

Read and download free pdf of CBSE Class 12 Biology Revision Worksheet Set B. Students and teachers of Class 12 Biology can get free printable Worksheets for Class 12 Biology in PDF format prepared as per the latest syllabus and examination pattern in your schools. Standard 12 students should practice questions and answers given here for Biology in Grade 12 which will help them to improve your knowledge of all important chapters and its topics. Students should also download free pdf of Class 12 Biology Worksheets prepared by school teachers as per the latest NCERT, CBSE, KVS books and syllabus issued this academic year and solve important problems provided here with solutions on daily basis to get more score in school exams and tests

Biology Worksheet for Class 12

Class 12 Biology students should refer to the following printable worksheet in Pdf in standard 12. This test paper with questions and answers for Grade 12 Biology will be very useful for exams and help you to score good marks

Class 12 Biology Worksheet Pdf

CBSE Class 12 Biology all chapters revision worksheets (1). CBSE issues sample papers every year for students for class 12 board exams. Students should solve the CBSE issued sample papers to understand the pattern of the question paper which will come in class 12 board exams this year. The sample papers have been provided with marking scheme. It’s always recommended to practice as many CBSE sample papers as possible before the board examinations. Sample papers should be always practiced in examination condition at home or school and the student should show the answers to teachers for checking or compare with the answers provided. Students can download the sample papers in pdf format free and score better marks in examinations. Refer to other links too for latest sample papers.

1. Name the asexual reproductive structure in
a) Penicillium
b) Sponge
2. In diploid organisms, the gamete mother cells are called ____________ 
3. Coconut water in tender coconut is actually ___________________ (endosperm / early cotyledon / fruit)
4. What are vegetative propagules? Name any one.
5. Mention the function of filiform apparatus. 
6. Cleistogamous flowers produce assured seed set even in absence of pollinators. How? 
7. Write difference between menstrual cycle and Oestrus cycle. 
8. Match the following:
a) Homothallic 
i) Dioecious
b) Heterothallic
ii) Monoecious
9. In Chara, the female sex organ is _______________ and the male sex organ is ____________ . 
10. a) Why are off-springs of oviparous animals at greater risk than off-springs of viviparous animals?
b) What is common between Turkey (bird) and honey bee which is unusual in sexually reproducing animals.
11. a) Pollen grains are tolerant to strong acids and high temperatures. What made it so?
b) Which area in the coat of the pollen grain this tolerance is absent?
12. How is Geitonogamy different from autogamy and Xenogamy? 
13. Discuss on the devices which plants have developed to encourage cross pollination. (any two) 
14. Draw the structure of an anatropous ovule and label 6 parts. 
15. a) Enlist the characteristics of flower favouring wind pollination.
b) Name two plants pollinated by wind.
16. Write the steps you would follow to artificially hybridize your crop plants. 
17. What happens to the following after fertilization:
Egg, Polar nuclei, Antipodal cells, Synergids, ovule, ovary 
18. a) Explain the development of microspores in angiosperms.
b) Are microspores the male gametes? Justify?
19. Explain the following terms:
a) Polyembryony
b) Scutellum
c) Perisperm
d) Apomixis
e) Triple fusion

Please click the link below to download full pdf file for CBSE Class 12 Biology all chapters revision worksheets (1).

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