Important questions for 12th biology Maharashtra board with solution


Biology is a lot to take in and those long words are just as frustrating as those lab attendants we have while our practical examination. Only if you had a ray of hope form somewhere about the question that might have chances of being asked maybe it would help a little ? Well here is a good news for you I have some questions that can be asked in your 12th biology examination (only for Maharashtra board).

Important questions for 12th biology (Maharashtra board):

I cannot guarantee you that these questions will be asked but these will give you a little idea on what questions can be asked and how you should answer them.

Here, with the questions I have also provided you with the solution to that particular question so it is a little easier for you and you don't have to waste time in order to search for those long answers.

Botany:

Chapter 1: Genetic Basis of Inheritance:

1. Why did Mendel chose pea plant ? Explain the characteristics of Pea.

2. Mendel's laws.

3. Incomplete dominance.

4. Co-dominance.

5. What are polygenes ? Explain with examples.

6. Who is the father of genetics ?


Chapter 2: Gene: It's Nature, Expression and Regulation:

If you want to know about why DNA is stable than RNA click here and if you want to know about Seymour's modern concept of gene in detail click here.

1. Structure of DNA.

2. Write short notes on:

a. mRNA or messenger RNA
b. rRNA or ribosomal RNA
c. tRNA or transfer RNA
3. Draw a neat and labelled diagram of Wobble Hypothesis.


Chapter 3: Biotechnology: Process and Applications:

1. Explain replication of bacteriophage.

2. rDNA technology.

3. What are plasmids ?

4. What are transposons ?

5. Describe the steps in PCR.

6. Discuss biosafety issues.


Chapter 4: Enhancement in Food Production:

1. What are the steps involved in plant breeding ?

2. Write short notes on:
  1. Plant breeding for disease resistance
  2. Tissue culture 
3. Define SCP.


Chapter 5: Microbes in Human Welfare:

If you want to know what are the vitamins that are produced by the process of microbial fermentation click here.

1. Draw a neat and labelled diagram of biogas plant.

2. Mushroom.


Chapter 6: Photosynthesis:

If you want to know what does light independent reaction depends upon click here.

1. Draw a neat and labelled diagram of chloroplast.

2. Non-cyclic photophosphorylation.

3. Cyclic photophosphorylation.

4. Write short notes on:

a. Photorespiration
b. Significance of photosynthesis

Chapter 7: Respiration:

1. Draw a neat and labelled diagram of the following:
  1. Ultrastructure of mitochondria 
  2. Structure of ATP 
2. Mechanism of anaerobic respiration. 

3. Write short notes on:

a. Glycolysis
b. Gain of ATP in aerobic respiration
c. Krebs cycle

Chapter 8: Reproduction in Plants: 

If you want to know the difference between pollination and fertilisation click here and if you want to know about how does pollination lead to fertilisation click here.

1. Explain in detail the natural and artificial methods of reproduction in vegetative propagation. 

2. Write short notes on:

a. Micropopogation
b. Significance of vegetative propogation
3. Draw a neat and labelled diagram of TS of anther and describe it. 

4. Draw a neat and labelled diagram of pollen grain and describe it. 

5. Draw a neat and labelled diagram of ovule and describe it. 

6. Write short notes on: 

a. Pollination
b. Post fertilization changes
c. Development of embryo

Chapter 9: Organisms and environment - 1:

If you want to know the difference between primary succession and secondary succession click here.

1. Write short notes on:

a. Phosphorus cycle
b. Global warming
2. Explain the concept of pyramid of numbers, biomass and energy.


Zoology:

Chapter 11: Chromosomal Basis of Inheritance:

If you want to know if linkage and crossing over are alternatives of each click here.

1. Describe the structure and types of chromosomes.

2. Explain sex-determination in humans, honey bees and birds. 


Chapter 12: Genetic Engineering and Genomics:

1. Role of insulin in your body. 

2. If there is a court case and the father refuses to acknowledge the son. What will be the process used to identify the son ?

3. What is DNA fingerprinting ? Describe various steps. 


Chapter 13: Human Health and Diseases:

If you want to read about this chapter and get a proper understanding of it, I have an article on my website for this or just simply click here

1. What is antigen and antibody ?

2. Describe the structure of antibody. 

3. Write short notes on:

a. Blood groups
b. Malaria
4. Describe the life cycle of malarial parasite. 

5. Cancer. 

6. What are the common symptoms of AIDS ?


Chapter 14: Animal Husbandry:

If you want to know about the relation between animal husbandry and dairy farming, I have an article on my website for this or just simply click here

1. Write short notes on:

a. Fisheries
b. Inbreeding
c. Crossbreeding
d. Sericulture
2. Which method of animal breeding is best ? Why ?


Chapter 15: Circulation:

If you want to know which blood vessel has the least amount of oxygen click here and if you want to know about how much blood circulates in the human body click here.

1. What is stroke volume ?

2. What is systole and diastole ?

3. Describe in detail the composition of human blood. 

4. Describe the internal structure of heart. 

5. Write short notes on:

a. Hypertension
b. Coronary Artery Disease (CAD)
c. Angina pectoris
d. Heart failure
6. What are two types of cholestrol ?

7. Draw a neat and labelled diagram of an ECG. 


Chapter 16: Excretion and Osmoregulation:

If you want to know the various modes of nitrogenous ways click here.

1. Write short notes on:

a. Kidney failure
b. Kidney stones
c. Dialysis
d. Regulation of kidney function
e. Formation of urine
2. Draw a neat and labelled diagram of the following:

a. Human excretory system
b. Kidney

Chapter 17: Control and co-ordination:

1. Give an account of hormones secreted by pituitary gland. 

2. Describe the different parts of the human eye. 

3. Define reflex action. Explain different components of reflex arc. 

4. Describe T.S of spinal cord. 

5. Describe the internal structure of human ear. 


Chapter 18: Human Reproduction:

1. Describe the structure of a sperm.

2. Describe the structure of male reproductive system. 

3. Describe the structure of female reproductive system. 


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