List of top Questions asked in CBSE Class XI

Mention the ploidy of the following: protonemal cell of a moss; primary endosperm nucleus in dicot, leaf cell of a moss; prothallus cell of a ferm; gemma cell in Marchantia; meristem cell of monocot, ovum of a liverwort, and zygote of a fern.
to meet one’s match
When and where does reduction division take place in the life cycle of a liverwort, a moss, a fern, a gymnosperm and an angiosperm?
What is the basis of classification of algae?
Organise a discussion in your class on the topic – Are viruses living or non-living?
Give a brief account of viruses with respect to their structure and nature of genetic material. Also name four common viral diseases.
Give a comparative account of the classes of Kingdom Fungi under the following:
  1. mode of nutrition
  2. mode of reproduction
What do the terms phycobiont and mycobiont signify?
Plants are autotrophic. Can you think of some plants that are partially heterotrophic?
Describe briefly the four major groups of Protozoa.
How are viroids different from viruses?
What is the nature of cell-walls in diatoms?
Find out what do the terms ‘algal bloom’ and ‘red-tides’ signify.
State two economically important uses of:
  1. heterotrophic bacteria
  2. archaebacteria
Suggest a few instances in the poem which highlight humour and irony.
There lies a great difference between textbook medicine and the world of a practising physician.Discuss.
“I have done something; oh, God! I’ve done something real at last.” Why does Andrew say this? What does it mean?
Look up the dictionary for the meaning of the word‘diaspora’. What do you understand of the Indian diaspora from this piece?
How do Shahid and the writer react to the knowledge that Shahid is going to die?
What impressions of Shahid do you gather from the piece?
Is drama a good medium for conveying a social message? Discuss.
This play, written in the 1950s, is a humorous and satirical depiction of the status of the mother in the family.
(i) What are the issues it raises?
(ii) Do you think it caricatures these issues or do you think that the problems it raises are genuine? How does the play resolve the issues? Do you agree with the resolution?
You will probably agree that this story does not have breathless adventure and exciting action. Then what in your opinion makes it interesting?
Explain the use of the adjectives in the following phrases.
(i) shaggy monsters
(ii) brackish lakes
(iii) rickety table
(iv) hairpin bend
(v) rudimentary general stores
Guess the meaning of the following words.
kora, drokba, kyang
In which language are these words found?