rasheeda

                                  REPRODUCTION IN ORGANISMS        1. Which one of the following statements is not correct? A. In banana, potato, and ginger, the plantlets arise from the internodes present in the modified stem. B. Offspring produced by asexual reproduction is called a clone C. Water hyacinth can deplete oxygen and cause the death of fishes D. All of the above 2. Apomixis is the development of a new plant A. Without the fusion of gametes B. With the fusion of gametes C. From root cuts D. From stem cuts 3. A piece of potato tuber will form a new plant if it has _____ A. Stored Food B. Roots C. Branches D. Eyes 4. Tissue culture techniques can produce an indefinite number of new plants from a small parental tissue. The economic importance of the technique is ____ A. Genetically uniform population of an elite species B. Variants through picking up somaclonal variations C. Development of new species D. None of the above 5. Cellular totipotency was demonstrated by ___ A. Rob

                                        REPRODUCTION IN ORGANISMS                         31. Oestrous cycle occurs in females of: A) Monkeys        B) Cows C) Apes                             D) Humans Correct Answer:  B 32. Which of the following statements regarding the given terms are correct?    Runners Tubers Offsets A) These all are incapable of giving rise to new individuals and formation of these structures does not involve two parents. B) These all are capable of giving rise to new individuals and formation of these structures does not involve two parents. C) These all are capable of giving rise to new individuals but formation of these structures involves two parents for reproduction. D) These are all incapable of giving rise to new individuals but formation of these structure involves two parents for reproduction Correct Answer:  B 33. Match column-I with column- II and select the correct answer using the codes given below. column-I(Name of the organism) column- II(Chromos

                                   REPRODUCTION IN ORGANISMS 1. A potato tuber is sown in a pot and pot is placed in the freezer of refrigerator. New plants will: A) Emerge normally B) Not emerge C) Be without leaves D)Be without flowers Correct Answer:  B 2. Soil around stem of potato plant is constantly removed from very young stage so that only roots remain in the soil. Potato tubers in plant will be: A) Larger           B) Smaller C) Formed normally D) not formed Correct Answer:  D 3. Banana fruits are seedless, because: A) Auxins are sprayed for rapid development of fruit. B) Vegetative propagation of plant. C) They are triploid plants. D) Fruits are artificially ripened. Correct Answer:  C 4.  Reproducing new plants by cells instead of seeds is known as: A) Biofertiliser        B) Mutation C) Tissue culture      D)  Antibiotics Correct Answer:  C 5. The formation of gametophyte from the sporophyte (without meiosis) is called: A) Apospory    B) Apogamy C) Agamospermy    D) None of