List of top Questions asked in UP Board XII

Human ovum.
Answer the following questions briefly: Genetically Modified (GM) Crops
Describe the dihybrid cross with a diagram.
Components of a Nucleotide
In-situ Conservation
What is addiction? Write a note on its ill effects on the young generation and its control measures.
Describe the Chromosome theory of Genetics.
Explain competition and parasitism with examples.
How many pairs of contrasting traits were studied by Mendel in pea plants?
What are parthenocarpic fruits?
What do you understand by patent?
Describe natural selection in brief.
Which one of the following is not a false fruit?
The vector of Dengue (Break bone) fever is:
The name of the plant pollinated by water is:
Who proposed the Chromosomal theory of Inheritance?
Choose the correct option and write in your answer-book: Genetic engineering is useful in:
What do you mean by Mendelian disorders? Give an example of an autosome-linked Mendelian disorder.
What is the haplodiploid sex determination system?
Define primary and secondary productivity.
What is placenta? Describe the different functions of placenta in brief.
With the help of a suitable diagram, explain the classical experiment of S.L. Miller regarding the origin of life.
Describe the functions of vegetative and generative cells of a mature pollen grain with a suitable diagram.
What is adaptive radiation? Describe it with an example.
What are lymphocytes? Briefly describe the functions of two special types of lymphocytes present in our blood.