NEET GURU

Humans reproduce by sexual method. The male reproductive system is located in the pelvis region. It includes a pair of testis along with accesory ducts, glands and external genitalia. Male Reproductive System -  Testes are located outside the abdominal cavity within a pouch called scrotum scrotum maintenance the low temperature (2-2.5 °C lower the normal body temperature) which is required for spermatogenesis. Testis is oval shaped, and each testis is internally divided into 250 compartments known as testicular lobules. Each testicular lobule has 1 to 3 seminiferous tubule. Sertoli sells provide nutrition to the germ cells. Leydig cells synthesize and secret androgens like testosterone. To download PDF -  Download PDF of Human Reproduction Mind map  To join telegram - click here Seminiferous tubules of testis open into the Vasa efferentia through rete testis. Vasa efferentia then opens into epididymis. Epididymis leads to vas deferens. Vas deferens joins with the duct of...

Reproductive Health Mind map for NEET Class 12 Chapter 4 Contraception, or birth control, is an important part of reproductive health and is essential for preventing unintended pregnancies. There are many different types of contraception, and it’s important to choose the type that best suits your lifestyle and needs.  Some of the most common methods of contraception are: barrier methods (such as condoms, diaphragms, and cervical caps), hormonal contraceptives (such as the pill, patch, and ring), intrauterine devices (IUDs), sterilization, and natural family planning. To download PDF-  Click here to Download PDF of Reproductive health mind map To join telegram -  Click here Barrier methods work by blocking sperm from entering the uterus, and hormonal contraceptives work by preventing ovulation or changing the conditions in the uterus and cervix. IUDs are small, T-shaped devices that are inserted into the uterus, and sterilization is a form of permanent contraception. Natur...

Environmental issues Mind map PDF for Class 12 NEET  Any undesirable change in physical, chemical and biological characteristic of air, water, land or soil is called as pollution. Pollutants are agents that bring those undesirable change or cause pollution.  Environmental protection act was launched in 1986 to protect our environment from pollution.  Air pollution contains particulate matter and gaseous pollutants from smokestacks of factories etc. Central pollution control board (cpcb) controls and checks different type of pollution in India. Particulate matters less than 2.5 micrometer (PM 2.5) are most harmful to human health. To download PDF-  Click here to download PDF of Environmental issues Mind map To join telegram -  Click here Particulate matter which are very small can cause harmful effects on health like respiratory problems, irritation, information, damage to lungs and also can lead to premature death. Environmental issues are of great global concer...

Biodiversity and Conservation Mind map Class 12 Chapter 15 NCERT Solutions To download PDF -  Click here to download PDF of Biodiversity and Conservation Mind map To join telegram -  Click here Question 1. Name the three important components of biodiversity. Ans. Different type of living forms like plants animals insects microbes etc together form biodiversity. Biodiversity can have 3 components - (i) Species diversity (ii) Genetic diversity (iii) Ecosystem diversity 2. How do ecologists estimate the total number of species present in the world ? Ans. Since there is very large number of organisms present on earth, it is impossible to count every Organism. Also many Organisms are present in very harsh habitats which are very hard to explore. So, Ecologists try to estimate the total number of species by looking for patterns in biodiversity. For example space is diversity decreases when we move from equator to poles. This pattern in diversity gives an estimate number of different...

Evolution Mind map for NEET and Class 12 Genetics unit NCERT Solutions For Class 12 Biology Chapter 7 Evolution Question 1. Explain antibiotic resistance observed in bacteria in light of Darwinian selection theory . Ans. According to Darwin's theory, organisms which develop favourable variations against a given situation, can survive. When we expose a population of bacteria to antibiotics, most of them die. However some bacteria which have  developed resistance against the antibiotics due to mutations will survive and reproduce. This can form all new population of bacteria which is resistant to an antibiotic. To download PDF -  Click here to download Evolution mind map PDF To join telegram -  Click here Question 2. Find out from newspapers and popular science articles any new fossil discoveries or controversies about evolution . Ans. A fossil of a cat-sized reptile that was closely related to an extinct group of flying reptiles known as pterosaurs has been unearthed in Sc...

Ecosystem Mind map for NEET and Class 12 Biology Chapter 14 - PDF of mind map👇👇 To download PDF -  Click here to download Ecosystem mind map PDF To join telegram -  Click here NCERT Solutions for Class 12 Biology Chapter 14 Ecosystem 1. Fill in the blanks. (a) Plants are called as————- because they fix carbon dioxide. (b) In an ecosystem dominated by trees, the pyramid (of numbers) is————- type. (c) In aquatic ecosystems, the limiting factor for the productivity is————- . (d) Common detritivores in our ecosystem are————- . (e) The major reservoir of carbon on earth is————- . Ans: (a) Autotrophs (b) Spindle (c) Sunlight (d) Earthworm, bacteria & fungi of decay and vulture (e) Oceans 2. Which one of the following has the largest population in a food chain? (a) Producers (b) Primary consumers (c) Secondary consumers. (d) Decomposers Ans: (d) Decomposers has the largest population in a food chain. 3. The second trophic level in a lake is- (a) Phytoplankton (b) Zooplankton (c...

PDF of Mind map of Chapter 13 Organisms and Populations  NCERT Solutions for Class 12 Biology Chapter 13 Organisms and Populations To download PDF of Class 12 Chapter 13 Organisms and Populations -  Click here To join telegram -  Click here 1. How is diapause different from hibernation? Ans . Diapause is a stage of suspended growth where an organism like zooplankton temporarily stop or slow down its growth. Metabolic activities are reduced during this period. Hibernation is also known as winter sleep where an organism reduces it's physical activities and remains in a sleep like state. Hibernation is seen in bears. 2. If a marine fish is placed in a fresh water aquarium, will the fish be able to survive? Why or why not? Ans. If we place a marine fish in freshwater or in aquarium, the fish will not be able to survive due to large change in salt concentration of water. The salt concentration in freshwater is very low in compared to the sea water. 3. Define phenotypic adapt...

Human Health and Disease Mind map Class 12 NEET CBSE The state of complete physical, mental and social well beings is called health. Health simply does not means disease free condition or physical fitness. Health is affected by- a. Genetic disorders – the defect which child inherits from it parents. b. Infection from microbes or other organisms. c. Life style- includes food and water we take, exercise and rest. To download PDF -  Human Health and Disease Mind map PDF To join telegram -  Click here Good health can be maintained by Balanced diet, personal hygiene, Regular exercise, Awareness about the disease and their effect Immunization against the infectious disease, Proper disposal of wastage and many more factors. Disease - Diseases can be broadly grouped into infectious and non-infectious. a) Infectious disease -Diseases which are easily transmitted from one person to another, are called infectious diseases e.g AIDS, common cold, malaria, tuberculosis etc b) Non-infectious...

Flowering plants are also known as angiosperms because they are only kind of plants that produce flower. In the classification system given by RH Whittaker, there are five types of plants that we have to study for class 12th or neet exam. These are algae Bryophytes, Pteridophytes, Gymnosperm and Angiosperm.  Flowers are used since long time to convey important feelings such as love, happiness,  affection, grief, peace, etc. For angiosperm plants, flowers are the site of sexual reproduction. The flowers can have both male and female sex organs or they can be unisexual. Typical flower have four whorls, these are - Calyx, Corolla, Gynoecium and Androecium. To download PDF -  Click Here To join telegram -  Click Here Pre fertilization structure and events - In flower the male reproductive organ is androecium and the female reproductive organ is Gynoecium. The male reproductive organ have stamen which have two part - anther and filament. The anther is a bilobed, dithecous...

Biotechnology and it's Applications mind map PDF for NEET and Class 12 Biotechnology involves use of living organism or their parts or molecular analogues.  This Chapter deals with applications of Biotechnology in different fields like agriculture, medicines, curing genetic and hereditary diseases etc.  In this lesson you'll study about 4 major topics - 1. Biotechnological Applications in Agriculture 2. Biotechnological Applications in Medicine 3. Transgenic Animals 4. Ethical Issues Click here to download pdf -  Download Biotechnology has given to humans several useful products by using microbes, plant, animals and their metabolic machinery. Recombinant DNA technology has made it possible to engineer microbes, plants and animals such that they have novel capabilities. Genetically Modified Organisms have been created by using methods other than natural methods to transfer one or more genes from one organism to another, generally using techniques such as recombinant DNA te...

Biotechnology: Principles and Processes Class 12 and NEET This is mind map of Chapter Biotechnology: Principles and Processes of Class 12 Biology.  This mind map is fully made from NCERT textbook of 12th grade and nothing is taken from outside. For Best revision, first watch video of the chapter and then study mind map. To watch video, click here Click here to download pdf To join telegram channel - join now Biotechnology is an important unit for NEET and about 2-3 questions are asked from this unit.   This unit consist of 2 chapters -  Biotechnology : principles and processes Biotechnology and its applications About 7.5% of the total weightage of NEET Biology is asked from Biotechnology. The paper had 3 questions on average appearing from this unit with a total of 12 marks. This first chapter basically tells you about what is biotechnology and what are the processes that are involved in it. It also tells about different principles of Biotechnology. The main topics of th...

 By - Mridul Tiwari PDF of Mind map is given at end of this page. Reproduction in Organisms In this chapter, we study about two types of reproduction seen in plants and animals - Sexual Reproduction and Asexual Reproduction Life span - period from birth to the natural death of an organism is life span. Life span doesn't depend on size of the organism, like crow is similar in size to parrot, however life span of crow is 15 years while parrot lives average life of 140 years. Reproduction is a biological process in which an organism gives rise to young ones (offspring) similar to itself. Asexual reproduction doesn't involve fusion of gametes Or fertilization. The offsprings formed in asexual reproduction are similar to their parents and also similar to one another. There is no variation. Asexual reproduction (NCERT figure) Asexual reproduction in plants (NCERT figure) However, in sexual reproduction, fertilization is must. In fertilization, male gamete fuses to female gamete givi...

Strategies for Enhancement in Food Production Mind map pdf for free  By - Mridul Tiwari Telegram - Join now Strategies for Enhancement in food production is a chapter which tells you about different methods that we apply to produce food for billions of people around the world. Click on link below to download the pdf  👇👇 PDF -   Download The most important topics in this chapter include - 1. Inbreeding, Outbreeding, Out-Crossing, and Cross-Breeding 2. MOET - Multiple Ovulation Embryo Transfer 3. Varieties of Wheat, Rice, Sugarcane used in Green Revolution 4. Table 9.1 and 9.2 - Pest Resistant crops and Disease resistant crops 5. SCPs - Single Celled Proteins A good part of this chapter is Disease resistant and Pest resistant varieties. There are two tables which tells us about the crops which are resistant to diseases caused by certain bacteria or viruses and also crop varieties which are resistant to certain insects like aphid, jassids, fruit borer, shoot borer et...