List of top Questions asked in UP Board XII- 2023

Differentiate between true fruit and false fruit.
Define Apomixis.
What do you mean by Polyembryony?
Draw a labelled diagram of a human sperm.
What is biodiversity hotspot?
Describe in brief about advantages of cross-pollination.
Pollen grains get their nourishment from which part of anther?
Draw a labelled diagram of a succulent fruit.
Comment upon amniocentesis.
Congenital metabolic disorder is:
Mention the name of causal organism of Typhoid fever.
What type of nucleus is found in bacterial cell?
How many meiotic divisions are required to get 200 grains of Barley?
Which one is found in pollen grain?
Number of pollen sacs in an anther is:
Comment on in-situ and ex-situ conservation.
Mention any three drawbacks of insulin obtained from the pancreas of slaughtered cattle and pigs.
What is contact inhibition? Explain how the normal cell transforms into cancerous cell.
Differentiate between any two of the following:
(i) Hypocotyl and Epicotyl
(ii) Perisperm and Pericarp
(iii) Integument and Testa
Explain the salient features of Genetic code.
Define Parturition. Give an account of different hormones involved during this process.
Explain Competition and Parasitism with examples.
Write short notes on any two of the following: (i) Adenosine Deaminase Deficiency (ii) Interspecific Competition with example (iii) Human Genome Project
Describe the disorders from the following chromosomal abnormal arrangements: (i) Trisomy of Chromosome 21 (ii) XXY
A colourblind father has a daughter with normal vision and the daughter marries a man with normal vision. What is the probability of her son being a carrier for colourblindness? Explain with pedigree chart.