Sexual Reproduction in Flowering Plants Important Questions for CBSE Class 12 Biology Pollination 1.Pollination is the transfer of pollen grains from anther to the stigma of a pistil. (i)Autogamy is the transfer of pollen grains from anther to the stigma of the same flower. Anthers and the stigma lie close to each other in a way that self-pollination occurs, i.e. … [Read more...]
Important Questions for CBSE Class 12 Biology Flower and its Parts
Sexual Reproduction in Flowering Plants Important Questions for CBSE Class 12 Biology Flower and its Parts Sexual reproduction is the process of fusion of haploid gametes, resulting in the production of a diploid zygote, which ultimately develops into a new organism. All flowering plants show sexual reproduction. 1.Flowers are the site of sexual reproduction in flowering … [Read more...]
Important Questions for CBSE Class 12 Biology Conservation of Biodiversity
Biodiversity and Conservation Important Questions for CBSE Class 12 Biology Conservation of Biodiversity 1.Reasons for Conservating Biodiversity There are various reasons for conservation of biodiversity. These can be grouped as: (i) Narrowly Utilitarian Arguments (a) Humans derive several direct economic benefits from nature such as food (cereals, pulses and fruits), … [Read more...]
Important Questions for CBSE Class 12 Biology Biological Evolution, Its Mechanism and Evolution of Man
Evolution Important Questions for CBSE Class 12 Biology Biological Evolution, Its Mechanism and Evolution of Man 1.The important theories related to biological evolution are: (i) Lamarckism or Lamarck’s theory of evolution. (ii)Darwinian theory of evolution. (iii) Mutation theory of evolution. 2.Lamarck’s theory of evolution states that life forms occurred due to the use … [Read more...]
Important Questions for CBSE Class 12 Biology Microbes in Production of Biogas as Biocontrol Agents and Biofertilisers
Microbes in Human Welfare Important Questions for CBSE Class 12 Biology Microbes in Production of Biogas as Biocontrol Agents and Biofertilisers 1. Microbes in Production of Biogas (i) Biogas is a mixture of gases (mainly methane) produced by the microbial activity and may be used as a fuel. (ii) Certain bacteria, which grow anaerobically on cellulosic material, produce … [Read more...]