Free download Paper Biology Reproduction (obj)

Chapter 18 Reproduction (Objective)

                    

Note: Attempt all questions.

Q .No.1: Four possible answers are given. Encircle the best option. (17)

       i.            Reproduction is important for the survival of:

     a) Individual       b) species       c) Population    d) Both b & c

     ii.            Methods of asexual reproduction are:

          a) Apomixis      b) Artificial propagation    

          c) Sporulation    d) All of these

  iii.            Pinus sylvesteris belongs to:

          a) Gymnosperms     b) Angiosperms    c) Both a & b   d) None of these             

   iv.            Three Antipodal cells are fertilized with:

           a) Pollen tube      b) Egg nucleus      c) pollen gains     d) none of these

      v.            Developing seeds are rich source of:

          a) Auxins       b) Cytokinins      c) Gibberellins    d) All of these

   vi.            Hyoscymus niger is one of the:

a) long day plants  b) Short day plants c) Day neutral plants d) None

 vii.            The wave length of red light is:

          a) 660 ×10-9  b) 6600 × 10­^-10   c)66×10^-8    d)All of these     

viii.            P660 is converted in P730 by absorbing light of wavelength:

          a) 660 nm         b) 730 nm        c) Both a & b       d) All of these  

   ix.            The total non-disjunction of chromosomes is a form of:

          a) Mitosis      b) Meiosis     c) None of these   d) Both a & b

      x.            Parthenogenesis accelerates the:

          a) Reproductive rate           b) Growth rate   

          c) Cell growth rate              d) all of these

   xi.            In tissue culturing technique, the nutrients used are:

      a) Cytokinins     b) Indole acetic acid       c) Auxins     d) All of these            

 xii.            Prostrate gland is found in:

     a) Males    b) Females      c) Both males & females       d) None

xiii.            The events of menstrual cycle involve:

     a) Ovaries    b) Uterus      c) Ureter      d) Both a & b

xiv.            Estrous cycle is the reproductive cycle found in:

     a) Goats      b) cats     c) Human females    c) Both a & b  

  xv.            Polar bodies are:

      a) Haploid     b) Diploid    c) Triploid     d) All of these

xvi.            Duration of gestation period in women  is:

     a) 40 weeks          b) 41 weeks    c) 42 weeks   d) none of these

xvii.            Neisseria gonorrheae is a -------- bacterium.

    a) Gram positive   b) Gram negative   c) Both a & b   d) None of these

                                                                   (Prepared by: Mahr Sagheer )