CBSE Class 12 Biology All Chapters Average Questions Worksheet

CBSE Class 12 Biology all chapters average questions. 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 most invasive aquatic plant weed which is called as ‘Terror of Bengal’.
 
2 Offsprings produced by asexual reproduction are referred to as clones. Why?
 
3 Study the relationship between first two words and suggest a suitable word for fourth place.
 
(a) Chlamydomonas : Zoospores :: Penicilium : .............................
 
(b) Ginger : Rhizome :: Agave : .............................
 
4 Fill in the gaps.
 
The period from birth to the natural death of an organism represents its…………………
 
5 Asexual reproduction is seen in which of the following pair of organisms.
 
(a) Amoeba and Hydra
 
(b) Penicillium and Hibiscus
 
(c) Rose and Earthworm
 
(d) Leech and Cockroach

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