Q.1. Mention the advantages of selecting pea plant for experiment by Mendel. Ans. Mendel selected pea plant because of the following special feature : Garden peas were found to differ in certain definite and easily detectable traits. The traits of each kind of pea plant were presented in generation after generation because the plants had […]

Biology Reproductive Health Chapter 4 – Exercise – NCERT Biology reproductive health exercise completed here read them carefully and these are useful for cbse 12 board exams and other competitive exams. Q.1. what do you think is the significance of reproductive health in a society. ans. Rapidly expanding human population, particularly,  in the developing countries […]

Q 1. What are the various constituents of domestic sewage? Discuss the effects of sewage discharge on a river. Ans 1. The domestic waste contains everything that down the drain into the sewer of the house. Suspended solids are soil particles (sand and silt), inorganic colloidal particles (e.g., clay) and organic colloidal matter (faecal matter, […]

Q 1. Bacteria can’t be seen with the naked eyes, but these can be seen with the help of a microscope. If you have to carry a sample from your home to your biology laboratory to demonstrate the presence of microbes under a microscope, which sample would you carry and why? Ans 1. The common […]

Q.1 Fill in the blanks: (a) Humans reproduce …………. (asexually/sexually) (b) Humans are …………. (oviparous/viviparous/ovoviviparous) (c) Fertilization is …………. in humans (external/internal) (d) Male and female gametes are …………. (diploid/haploid) (e) Zygote is …………. (diploid/haploid) (f) The process of release of ovum from mature follicle is called …………. (g) Ovulation is induced by a hormone […]

Strategies for Enhancement in Food Production Chapter 9 – Exercise Q 1. Explain in brief the role of animal husbandry in human welfare. Ans 1. Animal husbandry includes feeding, breeding and raising animals livestock whose primary purpose is to provide milk and meat. Milk is considered as the ‘most nearly perfect’ food for human consumption […]

Biology 12 Evolution chapter 7 – Exercise Q 1. Explain antibiotic resistance observed in bacteria in light of Darwinian selection theory. Ans 1. When a bacterial population encounters a particular antibiotic, those sensitive to it die. One or few bacteria having mutations which make them resistant to antibiotic, survive. Such resistant bacteria multiply quickly as […]

NCERT EXERCISES Chapter – 1 (Exercise 1.2) Q – 1.1 Describe the term ‘amorphous’. Give a few examples of amorphous solids. Ans. Amorphous solids are those solids in which the constituent particles may have a short range order but do not have a long range order. They have irregular shapes and are isotropic in nature. […]

Biology Sexual Reproduction in Flowering Plants Chapter 2 – Exercise : NCERT solutions of Biology chapter 2 exercises. We mentioned all important questions below check them, Or you can just directly download question paper. But you will get solutions in this page only. So you can book mark this page and you will find it easily. […]

Q 1. What are the various health measures which you would suggest to safeguard us against infectious diseases? Ans 1. Preventive measures are precautionary steps taken to check the transmission of infectious diseases. Common preventive measures include education, isolation, vaccination, sanitation, and sterilization. Education: People should be educated about the communicable diseases so that they […]