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1. Multiple Choice Questions Question 1.Griffith worked on ………………..(a) Bacteriophage(b) Drosophila(c) Frog eggs(d) StreptococciAnswer:(d) Streptococci Question 2.The molecular knives of DNA are ………………..(a) Ligases(b) Polymerases(c) Endonucleases(d) TranscriptaseAnswer:(c) Endonucleases Question 3.Translation occurs in the ………………..(a) Nucleus(b) Cytoplasm(c) Nucleolus(d) LysosomesAnswer:(b) Cytoplasm Question 4.The enzyme required for transcription is ………………..(a) DNA polymerase(b) RNApolymerase(c) Restriction enzyme(d) RNaseAnswer:(b) RNA polymerase … Read more

1. Multiple Choice Questions Question 1.Phenotypic ratio of incomplete dominance in Mirabilis jalapa.(a) 2 : 1 : 1(b) 1 : 2 : 1(c) 3 : 1(d) 2 : 2Answer:(b) 1 : 2 : 1 Question 2.In a dihybrid cross, F2 generation offspring show four different phenotypes while the genotypes are ……………….(a) six(b) nine(c) eight(d) sixteenAnswer:(b) nine … Read more

1. Multiple choice questions Question 1.The number of nuclei present in a zygote is ……………….(a) two(b) one(c) four(d) eightAnswer:(b) one Question 2.Which of these is the male reproductive organ in humans?(a) Sperm(b) Seminal fluid(c) Testes(d) OvaryAnswer:(c) Testes Question 3.Attachment of embryo to the wall of the uterus is known as ……………….(a) fertilization(b) gestation(c) cleavage(d) implantationAnswer:(d) … Read more

1. Multiple Choice Questions Question 1.Insect pollinated flowers usually possess ………………(a) sticky pollen with a rough surface(b) large quantities of pollens(c) dry pollen with a smooth surface(d) light-colored pollensAnswer:(a) sticky pollen with a rough surface Question 2.In ovule, meiosis occurs in ………………(a) Integument(b) Nucellus(c) Megaspore(d) Megaspore mother cellAnswer:(d) Megaspore mother cell Question 3.The ploidy level … Read more

12th English Digest Chapter 4.4 The Sign of Four Textbook Questions and Answers CHARACTER: (A1) Question (i)Read the extract again and complete the web by highlighting the qualities of the following characters:Answer: Question (ii)Describe the character of Mary Morstan from Dr. Watson’s point of view.Answer:From Dr. Watson’s point of view: When I first saw Mary, … Read more

12th English Digest Chapter 4.3 Around the World in Eighty Days Textbook Questions and Answers CHARACTER: (A1) Question (i)One of the following is not a major character of the novel. Choose the correct one and justify.(Select the correct one.)(a) Phileas Fogg(b) Aouda(c) James Strand(d) Jean PassepartoutAnswer:James Strand is not a major character of the novel. … Read more

12th English Digest Chapter 4.2 To Sir, with Love Textbook Questions and Answers Character: (A1) Question (i)From the options given below, choose the name of the teacher and write a couple of lines from the extract in support of your answer.(a) Denham(b) Miss Joseph(c) Sapiano(d) Dale-EvansAnswer:Dale-Evans is the teacher. The lines to support this are: … Read more

12th English Digest Chapter 4.1 History of Novel Textbook Questions and Answers 1. Match the columns: Question 1.Match the columns: A B 1. Murasaki Shikibu (a) Cervantes 2. Novella (b) Bankimchandra Chattopadhyaya 3. Don Quixote (c) Tale of Genji 4. Rajmohan’s Wife (d) New Answer: A B 1. Murasaki Shikibu (c) Tale of Genji 2. … Read more

12th English Digest Chapter 3.6 Group Discussion Textbook Questions and Answers You must have discussed many things with your friends, classmates in a group. It might be about going on a picnic or selecting a gift for your teacher: Question (i)What do you think are the benefits of a group discussion?Answer:(a) A Group Discussion allows … Read more

12th English Digest Chapter 3.5 Drafting a Virtual Message Textbook Questions and Answers (i) Given below is a two-way communication cycle or the process of communication. (a) Can you guess the role of the sender and the receiver in this process? What do we encode? What do we decode? Question 1.Can you guess the role … Read more