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1. Multiple Choice Questions Question 1.In soil, water available for absorption by root is ……………..(a) gravitational water(b) capillary water(c) hygroscopic water(d) combined waterAnswer:(b) capillary water Question 2.The most widely accepted theory for ascent of sap is ……………..(a) capillarity theory(b) root pressure theory(c) diffusion(d) transpiration pull theoryAnswer:(d) transpiration pull theory Question 3.Water movement between the cells … Read more

1. Multiple Choice Questions Question 1.Who proposed that the first form of life could have come from pre-existing non-living organic molecules?(a) Alfred Wallace(b) Oparin and Haldane(c) Charles Darwin(d) Louis PasteurAnswer:(b) Oparin and Haldane Question 2.The sequence of origin of life may be(a) Organic materials – inorganic materials – Eobiont – colloidal aggregates – cell.(b) Inorganic … Read more

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