Class 12th Biology 2012 Set3 Delhi Board Paper Solution
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Q1 Mention the difference between spermiogenesis and spermiation.
Q2 A garden pea plant (A) produced inflated yellow pod, and anothe...
Q3 What is an interaction called when an orchid grows on a mango p...
Q4 Write the names of two semi-dwarf and high yiuelding rice varie...
Q5 Write what do phytophagous insects feed on.
Q6 Mention the unique feature with respect to flowering and fruiti...
Q7 How does smoking tobacco in human lead to oxygen deficiency in ...
Q8 State the significance of biochemical similarities amongst dive...
Q9 Explain the work carried out by Cohen and Boyer that contribute...
Q10 (a) State the difference between meiocyte and gamete with re...
Q11 Draw a neat labeled sketch of a replicating fork of DNA.
Q12 Some organisms suspend their metabolic activities to survive in...
Q13 (a) State the role of DNA ligase in biotechnology. (b) ...
Q14 Where is sporopollenin present in plants? State its significanc...
Q15 Mention the importance of Lactic acid bacteria to humans other ...
Q16 (a) Name the Protozoan parasite that causes amoebic dysenter...
Q17 (a) Highlight the role of thymus as a lymphoid organ. (b...
Q18 Why do clown fish and sea anemone pair up? What is this relatio...
Q19 (a) Construct a complete transcription unit with promotor and t...
Q20 Write the function of each of the following: (a) Seminal v...
Q21 Study a part of the life cycle of malarial parasite given below...
Q22 Draw a schematic sketch of pBR 322 plasmid and label the follow...
Q23 State the theory of Biogenesis. How does Miller’s experiment su...
Q24 Given below is the representation of amino acid composition not...
Q25 (a) Why are the colourful polysterene and plastic packagings us...
Q26 Name the genes responsible for making Bt cotton plants resistan...
Q27 Name the two different categories of microbes naturally occurri...
Q28 Explain the carbon cycle with the help of a simplified model. <...
Q29 The following is the illustration of the sequence of ovarian ev...
Q30 Name the scientists who proved experimentally that DNA is the g...
Question 2
A garden pea plant (A) produced inflated yellow pod, and another plant (B) of the same species produced constricted green pods. Identify the dominant traits.
Answer
The trait to produce inflated yellow seeds is dominant over the trait producing constricted green seeds.
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