CBSE Class 12 Biology Worksheet Set H Solved

Read and download free pdf of CBSE Class 12 Biology Worksheet Set H Solved. Download printable Biology Class 12 Worksheets in pdf format, CBSE Class 12 Biology All Chapters Worksheet has been prepared as per the latest syllabus and exam pattern issued by CBSE, NCERT and KVS. Also download free pdf Biology Class 12 Assignments and practice them daily to get better marks in tests and exams for Class 12. Free chapter wise worksheets with answers have been designed by Class 12 teachers as per latest examination pattern

All Chapters Biology Worksheet for Class 12

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

Class 12 Biology All Chapters Worksheet Pdf

1. Why is female mosquito not considered as a parasite? 
 
2. When and Where do chronic villi appear in human? 
 
3. What is the importance of light for organisms? How do deep sea organisms get their energy? 
 
4. Define population and community. 
 
5. During pregnancy, female body will have several hormones in high level. How it is helpful for them?
 
6. Define the following terms and give one example for each:
(a) Commensalism
(b) Parasitism
© Camouflage
 
7. In what way does logistic growth differ from exponential growth? 
 
8. How does constancy in the internal environment help an organism? How do organisms achieve it with regard to temperature? Give example.
 
9. State three functions of placenta in human.
 
 
VALUE POINTS 
 
1. It does not live in/on the body of the host 
 
2. Chrorionic villi appears after implantation/blastocyst embedded in inner most wall of uterus i.e.endometrium. • On the Trophblast
 
3. Quality of light, photoperiod affect photosynthesis, affect reproductive,foraging activities, ii)scavenging and predation
 
4. population - group of similar individuals with same features and capable of interbreeding.
Community- assemblage of different population.
 
5. supporting the fetal growth,metabolic changes in the mother and maintenance of pregnancy. ( for any two)
 
6. (a) Commensalism: Commensalism is an interspecific interaction between two species where one species is benefitted and the other remains unaffected.
Example: Orchid and mango tree.
(b) Parasitism: It is a relationship between two organisms where the larger animal is at harm and the smaller animal is benefitted.
Example: Malarial parasite and human beings.
(c) Camouflage: Camouflage is the ability of animals to blend with the surroundings or background. In this way, animals remain unnoticed for protection or aggression. Example: Stick insect.
 
7. exponential growth takes place when resources are unlimited and therefore the reproductive potential is highest. Logistic growth shows that the population cannot grow beyond the carrying capacity of the environment.(Depict graphically)
 
8. Constant internal environment permits all biochemical reactions to proceed with maximal efficiency, ii) regulate by physiological means eg sweating to reduce temperature when the external temperature increases.
 
9. facilitate supply of nutrients and oxygen removal of wastes produced by foetus acts as endocrine tissue


Please click on below link to download CBSE Class 12 Biology Worksheet Set H Solved

All Chapters CBSE Class 12 Biology Worksheet

The above practice worksheet for All Chapters has been designed as per the current syllabus for Class 12 Biology released by CBSE. Students studying in Class 12 can easily download in Pdf format and practice the questions and answers given in the above practice worksheet for Class 12 Biology on a daily basis. All the latest practice worksheets with solutions have been developed for Biology by referring to the most important and regularly asked topics that the students should learn and practice to get better scores in their examinations. Studiestoday is the best portal for Printable Worksheets for Class 12 Biology students to get all the latest study material free of cost. Teachers of studiestoday have referred to the NCERT book for Class 12 Biology to develop the Biology Class 12 worksheet. After solving the questions given in the practice sheet which have been developed as per the latest course books also refer to the NCERT solutions for Class 12 Biology designed by our teachers. After solving these you should also refer to Class 12 Biology MCQ Test for the same chapter. We have also provided a lot of other Worksheets for Class 12 Biology which you can use to further make yourself better in Biology.

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