CBSE Class 12 Biology Worksheet Set G Solved

Read and download free pdf of CBSE Class 12 Biology Worksheet Set G 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. Name the stage of human embryo at which it gets implanted. 
 
2. Will the distribution level of species be affected by gradual increase in temperature? Say briefly.
 
3. State the function of i) acrosome ii) zona pellucida in fertilisation 
 
4. How have plants developed defense against predators? 
 
5. Name the following
i] Species that can tolerate narrow range of temperature are called
ii]The interaction between two species
 
6. What is Lactation? How is it helpful? Why Colostrum is important for baby? 
 
7. Give an example for:
(a) An endothermic animal
(b) An ectothermic animal
(c) An organism of benthic zone
 
8. List any three important characteristics of a population and explain. 
 
9. What is altitude sickness? How does the body overcome this?
 
VALUE POINTS 
 
1. Blastocyst 
 
2. Yes, the pattern of distribution will shift towards the poles with increase in temperature
 
3. acrosome= help the sperm enter into the cytoplasm of the ovum through the zona pellucida and plasma membrane." zona pellucida - block the entry of more than one sperm into egg during fertilization.
 
4. Morphological-thorns and Spines; chemical-cardiac glycosides defences 
 
5. stenothermal
interspecific interaction
 
6. mammary gland starts differentiating and producing milk at the end of pregnancy./ to feed the baby/ contains antibodies to provide immunity to baby.
 
7. (a) An endothermic animal: Human being (Mammal)
(b) An ectothermic animal: Frog (Amphibian)
(c) An organism of benthic zone: Bacteria (Decomposers)
 
8. i. Density: It is expressed as the total number of individuals per unit area or volume at a given time. The size of the population is determined by the available resources nutrients, water etc. at a given time and other group properties such as natality, mortality and age structure.
ii. Natality: It is the increase in the number of individuals in a population under given environmental conditions. Birth, hatching, germination and even vegetative propagation cause increase in the number of individuals.
iii. Mortality: The loss of individuals due to death in a population under given environmental conditions is called mortality.
 
9. At higher altitudes the body shows symptoms like nausea, fatigue, Heart palpitations, due to insufficient oxygen in the body. The body increases RBC production, decreases oxygen binding capacity of haemoglobin and I ncreases breathing rate.


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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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