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Reproduction in...

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  • Question 1
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    Which of the following groups is formed only of the hermaphrodite organisms?

  • Question 2
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    Which of the following is a dioecious organism?

  • Question 3
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    Following table summarizes the differences between self fertilization and cross-fertilization. Pick out the wrong difference.

  • Question 4
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    It is observed that simple organisms like algae and fungi normally reproduce asexually but before the onset of adverse conditions they shift to sexual reproduction. It is so because sexual reproduction

  • Question 5
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    The growth phase of an organism before attaining sexualmaturity is referred to as

  • Question 6
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    Clear cut vegetative, reproductive and senescent phases cannot be observed in

  • Question 7
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    Given figure of Hydra shows its reproductive structures and manner of fertilition

  • Question 8
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    Organisms reproducing throughout the year are called ______ breeders e.g., ________, and those who show recurring sexual activity are called __________ breeders e.g., _________.

  • Question 9
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    Strobilanthus Kunthiana differs from bamboo in

  • Question 10
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    Which of the following is an incorrect combination of organism with its chromosome number in meiocyte and in gamete?

  • Question 11
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    Read the following statements and select the correct option 
    Statement 1: In gymnosperms, endosperm is formed before fertilization and is haploid.
    ​Statement 2: In angiosperms, endosperm is formed after fertilization and is diploid. 

  • Question 12
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    If a leaf cell of Agave has x chromosomes then what will be the number of chromosomes in a cell of its bulbil?

  • Question 13
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    The changes that indicate reproductive maturity in humans include

  • Question 14
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    Read the following statements about the reproductive cycles in mammals and select the correct ones. 
    (i) Oestrous cycle occurs in primate mammals 
    (ii)  in species with oestrous cycle females are generally sexually active during estrous phase
    iii) Both the cycles show monthly recurrence. 

  • Question 15
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    Senescent phase of an organism's life span can be recognized

  • Question 16
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    Staminate flowers produce 

  • Question 17
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    Meiosis does not occur in

  • Question 18
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    If a leaf cell of Agave has x chromosomes then what will be the number of chromosomes in a cell of its bulbil? 

  • Question 19
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    A diploid parent plant body produces ______________gametes and a haploid parent piant body produces ___________ gametes. 

  • Question 20
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    Which of the following options shows bisexual animals only? 

  • Question 21
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    Which of the following organisms has the highest number of chromosomes? 

  • Question 22
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    In maize, a meiocyte has 20 chromos. What will be the number of chromosomes in its somatic cell ? 

  • Question 23
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    Which of the following statements is not correct regarding sexuality in organisms?

  • Question 24
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    Which of the following statements is incorrect?

  • Question 25
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    Read the following statements and select the correct option.

    Statement 1: Honey bees often pollinate red coloured flowers.
    Statement 2: Honey bees visit flowers for pollen grains only

  • Question 26
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    If a fungal thallus has both male and female reproductive structure, it will be called

  • Question 27
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    Oestrous cycle is reported in

  • Question 28
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    Sexual reproduction is considered more beneficial than asexual reproduction because

  • Question 29
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    Select the incorrect statement about external fertilization. 

  • Question 30
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    Figure P represents the reproductive organs of Chara plant and figure Q represents the reproductive organs of earthworm. Select the optikon which correctly identifies male reproductive organs of the two organisms.

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