{"id":195583,"date":"2022-06-17T14:29:44","date_gmt":"2022-06-17T08:59:44","guid":{"rendered":"https:\/\/www.aakash.ac.in\/blog\/?p=195583"},"modified":"2023-05-02T13:01:46","modified_gmt":"2023-05-02T07:31:46","slug":"biology-chapter-wise-important-topics-and-weightage-for-neet-exam","status":"publish","type":"post","link":"https:\/\/www.aakash.ac.in\/blog\/biology-chapter-wise-important-topics-and-weightage-for-neet-exam\/","title":{"rendered":"Biology Chapter-wise Important Topics and Weightage for NEET 2022 Exam"},"content":{"rendered":"

<\/a>
\nNEET-UG 2022<\/span> comprises 180 questions that are divided into three sections, i.e., <\/span>Physics<\/span> (45 questions), <\/span>Chemistry<\/span> (45 questions), and <\/span>Biology <\/span>(90 questions). It means the <\/span>weightage of the Biology section<\/span> is more than the other two sections.<\/span><\/p>\n

One of the smart techniques to prepare for the NEET 2022 exam is to know about the important questions from each chapter. This article will help you with important questions from each <\/span>Biology<\/span><\/a> chapter for the <\/span>NEET 2022 exam<\/span><\/a>.<\/span><\/p>\n

Chapter-wise Important Questions for NEET 2022<\/h3>\n

Chapter 1: The Living World<\/b><\/h4>\n

<\/a>
\n1. What is the correct representation of organisation levels in living beings?<\/p>\n

Atomic\u2192Molecular\u2192Subcellular\u2192Cellular\u2192Tissue\u2192Organ System\u2192Individual<\/span><\/p>\n

2. What is the first step of taxonomy?<\/p>\n

The first step of taxonomy is the identification of the organism.<\/span><\/p>\n

Chapter 2: Biological Classification<\/b><\/h4>\n

1. What is the sequence of taxonomic categories?<\/span><\/p>\n

Division\u2192Class\u2192Order\u2192Family\u2192Tribe\u2192Genus\u2192Species<\/span><\/p>\n

2. What do you mean by Biological Classification?<\/p>\n

To identify dissimilarities among organisms and place them into groups that reflect their most important features and relationship.<\/span><\/p>\n

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Chapter 3: Plant Kingdom<\/b><\/h4>\n

1. Why does Funaira require water?<\/p>\n

In Funaira, fertilisation occurs only in water. Therefore, it requires water.<\/span><\/p>\n

2. What do you mean by Phenetics?<\/p>\n

Phenetics is a method of classification based on similarities between organisms without regard to their evolutionary relationships. In this classification, the organisms are arranged according to the overall similarities of existing organisms based on observation characters.<\/span><\/p>\n

Chapter 4: Animal Kingdom<\/b><\/h4>\n

1. Name the two animals that have non-glandular skin.<\/p>\n

Chameleon and Turtle.<\/span><\/p>\n

2. Name the common feature shared by birds and mammals.<\/p>\n

Both are warm-blooded.<\/span><\/p>\n

Chapter 5: Morphology of Flowering Plants<\/b><\/h4>\n

1. What are adventitious roots?<\/span><\/p>\n

Roots developed from the part of the plant other than the radicle are called adventitious roots.<\/span><\/p>\n

2. Where does the placenta attach to develop the seed?<\/p>\n

It is attached to the developing seed near the hilum.<\/span><\/p>\n

Chapter 6: Anatomy of Flowering Plants<\/b><\/h4>\n

1. What is the responsibility of the pericycle in roots?<\/p>\n

To form the lateral roots.<\/span><\/p>\n

2. Why is grafting not possible in monocots?<\/p>\n

Grafting is not possible in monocots because they lack cambium.<\/span><\/p>\n

Chapter 7: Structural Organisation of Animals<\/b><\/h4>\n

1. Who secretes the non-cellular basement membrane of epithelial cells?<\/span><\/p>\n

The epithelium and connective tissues secrete it.<\/span><\/p>\n

2. Which system is associated with pseudostratified ciliated columnar epithelium?<\/p>\n

Respiratory system.<\/span><\/p>\n

Chapter 8: Cell: The Unit of Life<\/b><\/h4>\n

1. Give an example of the dye not used for staining chromosomes?<\/p>\n

Safranin stain is not used for staining chromosomes.<\/span><\/p>\n

2. Who proposed the fluid mosaic model of the plasma membrane?<\/p>\n

J. Singer and G. L. Nicolson proposed the improved model of cell membrane structure. Later this model was widely accepted as the fluid mosaic model.<\/p>\n

Chapter 9: Biomolecules<\/b><\/h4>\n

1. What does glycogen make up?<\/span><\/p>\n

Glycogen is made of glucose units.<\/span><\/p>\n

2. What is the most plentiful component of a cell in a living organism?<\/p>\n

The most abundant component of a cell is water.<\/span><\/p>\n

Chapter 10: Cell Cycle and Cell Division<\/b><\/h4>\n

1. Where does the nuclear membrane disappear?<\/span><\/p>\n

The nuclear membrane disappears in the Late Prophase.<\/span><\/p>\n

2. Where does pairing between homologous chromosomes take place?<\/span><\/p>\n

In the zygotene stage of prophase-I.<\/span><\/p>\n

Chapter 11: Transport in Plants<\/b><\/h4>\n

1. What happens when potassium ions enter the guard cells?<\/p>\n

When K\u207a ions enter the guard cells, stomata open, and when K\u207a ions exit the guard cells, stomata close.<\/span><\/p>\n

2. What is the use of a Potometer?<\/p>\n

It is used to determine the rate of transpiration in plants.<\/span><\/p>\n

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Chapter 12: Mineral Nutrition<\/b><\/h4>\n

1. Which bacteria converts ammonia into nitrite?<\/span><\/p>\n

Nitrosomonas.<\/span><\/p>\n

2. What is Hydroponics?<\/p>\n

It is the technique of growing plants without soil in the nutrient solution.<\/span><\/p>\n

Chapter 13: Photosynthesis in Higher Plants<\/b><\/h4>\n

1. To form a glucose molecule, how many molecules of ATP and NADPH\u2082 are required in plants?<\/span><\/p>\n

Plants required 18 molecules of ATP and 12 molecules of NADPH\u2082 during the formation of glucose.<\/span><\/p>\n

2. What is the correct sequence of stages of the Clavin cycle?<\/span><\/p>\n

Carboxylation\u2192Reduction\u2192Regeneration<\/span><\/p>\n

Chapter 14: Respiration in Plants<\/b><\/h4>\n

1. Why does R. Q. get highest when the respiratory substance is maleic acid?<\/p>\n

It happens because maleic acid is an organic acid that produces CO\u2082 after oxidation. Due to which R. Q. gets highest.<\/span><\/p>\n

2. It is said that Phosphorus plays an important role in the energy metabolism process. Why?<\/p>\n

It is because Phosphorus produces ATP energy during the energy metabolism process.<\/span><\/p>\n

Chapter 15: Plant Growth and Development<\/b><\/h4>\n

1. What is differentiation?<\/p>\n

It is the process when totipotent embryonic stem cells change their structure, shape, and chemistry to meet the function they perform.<\/span><\/p>\n

2. Why is abscisic acid known as a stress hormone?<\/p>\n

Abscisic acid is known as a stress hormone because it increases the tolerance of plants to various stresses.<\/span><\/p>\n

Chapter 16: Digestion and Absorption<\/b><\/h4>\n

1. Why do you lose hunger in a fever?<\/p>\n

Hunger is excited with the average decrease in body temperature. As the body’s temperature increases in fever, hunger is lost.<\/span><\/p>\n

2. How many monophyodont teeth are there in human beings?<\/p>\n

There are eight premolars and four molars in human beings.<\/span><\/p>\n

Chapter 17: Breathing and Exchange of Gases<\/b><\/h4>\n

1. What is the correct sequence of the air passage in a man?<\/span><\/p>\n

External nares\u2192Nasopharynx\u2192Larynx\u2192Trachea\u2192Bronchi\u2192Bronchioles\u2192Alveoli<\/span><\/p>\n

2. Why is CO more toxic than CO\u2082?<\/p>\n

Haemoglobin shows a maximum affinity for CO, and CO reduces the oxygen-carrying capacity of haemoglobin. It makes CO more toxic than CO\u2082.<\/span><\/p>\n

Chapter 18: Body Fluids and Circulation<\/b><\/h4>\n

1. What is Pericardium?<\/span><\/p>\n

The heart is encircled in a double-walled sac known as Pericardium.<\/span><\/p>\n

2. Name the doctor who performed the first heart transplant.<\/p>\n

William Harvey.<\/span><\/p>\n

Chapter 19: Excretory Products and Their Elimination<\/b><\/h4>\n

<\/b>1. In which part does Aldosterone act?<\/span><\/p>\n

Distal Convoluted Tubule (DCT).<\/span><\/p>\n

2. Which part of the nephron is also called Renal Corpuscle?<\/p>\n

Bowman\u2019s capsule and Glomerulus.<\/span><\/p>\n

Check our visual story on NEET 2022 Biology Syllabus and Important Topics<\/a><\/p>\n

NEET 2022 Biology Syllabus and Important Topics<\/a><\/p><\/blockquote>\n