CBSE Class 12 Biology Worksheet Set H Solved

Access the latest CBSE Class 12 Biology Worksheet Set H Solved. We have provided free printable Class 12 Biology worksheets in PDF format, specifically designed for All Chapters. These practice sets are prepared by expert teachers following the 2025-26 syllabus and exam patterns issued by CBSE, NCERT, and KVS.

All Chapters Biology Practice Worksheet for Class 12

Students should use these Class 12 Biology chapter-wise worksheets for daily practice to improve their conceptual understanding. This detailed test papers include important questions and solutions for All Chapters, to help you prepare for school tests and final examination. Regular practice of these Class 12 Biology questions will help improve your problem-solving speed and exam accuracy for the 2026 session.

Download 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

Students can use the All Chapters practice sheet provided above to prepare for their upcoming school tests. This solved questions and answers follow the latest CBSE syllabus for Class 12 Biology. You can easily download the PDF format and solve these questions every day to improve your marks. Our expert teachers have made these from the most important topics that are always asked in your exams to help you get more marks in exams.

NCERT Based Questions and Solutions for All Chapters

Our expert team has used the official NCERT book for Class 12 Biology to create this practice material for students. After solving the questions our teachers have also suggested to study the NCERT solutions  which will help you to understand the best way to solve problems in Biology. You can get all this study material for free on studiestoday.com.

Extra Practice for Biology

To get the best results in Class 12, students should try the Biology MCQ Test for this chapter. We have also provided printable assignments for Class 12 Biology on our website. Regular practice will help you feel more confident and get higher marks in CBSE examinations.

Where can I download the latest PDF for CBSE Class 12 Biology Worksheet Set H Solved?

You can download the teacher-verified PDF for CBSE Class 12 Biology Worksheet Set H Solved from StudiesToday.com. These practice sheets for Class 12 Biology are designed as per the latest CBSE academic session.

Are these Biology Class 12 worksheets based on the 2026 competency-based pattern?

Yes, our CBSE Class 12 Biology Worksheet Set H Solved includes a variety of questions like Case-based studies, Assertion-Reasoning, and MCQs as per the 50% competency-based weightage in the latest curriculum for Class 12.

Do you provide solved answers for CBSE Class 12 Biology Worksheet Set H Solved?

Yes, we have provided detailed solutions for CBSE Class 12 Biology Worksheet Set H Solved to help Class 12 and follow the official CBSE marking scheme.

How does solving CBSE Class 12 Biology Worksheet Set H Solved help in exam preparation?

Daily practice with these Biology worksheets helps in identifying understanding gaps. It also improves question solving speed and ensures that Class 12 students get more marks in CBSE exams.

Is there any charge for the Class 12 Biology practice test papers?

All our Class 12 Biology practice test papers and worksheets are available for free download in mobile-friendly PDF format. You can access CBSE Class 12 Biology Worksheet Set H Solved without any registration.