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Reproduction in Organisms Test - 31

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Reproduction in Organisms Test - 31
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  • Question 1
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    Tubers help in the vegetative reproduction in
    Solution
    In potato, underground stem stores starch and becomes fleshy tuber. The eyes of tuber represent nodes and adventitious buds are present in their axil. The buds may germinate to produce new plantlets. Onion and garlic also show stem modifications but in these plants stem is modified to bulb having fleshy leaves. Tomato reproduces sexually and produces berry fruit.
  • Question 2
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    In Amorphophallus and Colocasia, vegetative reproduction is carried out through
    Solution
    All of the structures given in different options are used for vegetative propagation. The corm is vertically growing underground stem, which carries on vegetative propagation as in Amorphophallus and Colocasia. 
    Thus, the correct answer is option C.
  • Question 3
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    Animals who give birth to young ones are:
    Solution
    • Animals giving birth to young ones are called viviparous animals. The egg of these animals typically contains less yolk insufficient to support the development of the zygote into an embryo. Hence, development proceeds inside the body of the female animal, and the fully developed embryo is delivered. 
    • Oviparous animals lay eggs. Their egg typically has more amount of yolk and can support the development of the zygote into an embryo outside the body of the mother.
    • Ovoviviparous animals lay eggs and develop the eggs inside the mother's body.

    So, the correct answer is option B.
  • Question 4
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    Sexually reproducing larva shows ____.
  • Question 5
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    Viviparity is found in
    Solution
    Some animals give birth to young ones. This characteristic is called vivipary. Some animals lay eggs and this habit is called ovipary. In viviparous animals, the fertilization is internal and the zygote develops inside the body of female animals. These animals generally produce eggs with very little yolk which cannot support the development of the embryo and hence the zygote develops into an embryo inside the body of female. Cartilaginous fishes like shark are an example of viviparous animals.
    So, the correct answer is option C.
  • Question 6
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    Birds are:
    Solution
    Oviparous animals are those organisms that lay eggs, with little or no other embryonic development within the mother. In some oviparous animals, fertilization is external (in fishes, most of the frogs) while in some fertilization is internal, the female lays zygotes as eggs (typically birds).
    So, the correct answer is option A.
  • Question 7
    1 / -0
    Asexual reproduction takes place through budding in
    Solution
    Saccharomyces cerevisiae commonly known as yeast, reproduces both asexually as well as sexually. Yeast reproduce asexually through a process known as budding
    So, the correct answer is 'Yeast'
  • Question 8
    1 / -0
    What is pollination?
    Solution
    Pollination is the process by which male gamete or pollen is transferred from the anther or the male part to the stigma or the female part of the plant thereby enabling fertilization and reproduction.
    Thus, the correct answer is option (A), 'Transfer of male gamete to stigma.
  • Question 9
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    Natural parthenogenesis occurs in
    Solution
    Correct option: B
    Explanation:
    parthenogenesis is a type of agametic proliferation where the assistance of male and female gametes isn't necessary. The particular generates unfertilized eggs as it were. Thereafter, just the female is included.
    Mainly two types of Parthenogenesis are found Natural Parthenogenesis and Artificial Parthenogenesis.
    Natural Parthenogenesis occurs In specific animals, parthenogenesis occurs commonly in their life cycles so known as natural parthenogenesis.
    In artificial Parthenogenesis, the fertilized eggs might by various chemical and physical standards so-known as artificial parthenogenesis.
    The life cycle of honey bees is complicated and involves numerous categories. There are drones, workers, and only one Queen in the bees groups. Queen bee's function is to consume royal jelly and lay eggs. The worker assigned many duties to accomplish such as nursing and caring for the young ones, travelling long distances to collect food, and also removing the corpses. So the males are produced from unfertilized eggs but the females are produced by fertilized eggs of the Queen. So honey bees show natural parthenogenesis. Hence, Honey-bee is the correct answer.
  • Question 10
    1 / -0
    Which family has unisexual flowers ?
    Solution
    Euphorbiaceae, Musaceae and Moraceae have unisexual flowers. A flower is said to be unisexual when it is having stamens but no pistils or having pistils but no stamens. A flower having only stamens is said to be staminate or male. A flower having only pistils is said to be pistillate or female. In many unisexual flowers, the nonfunctioning organs of the other sex are present in reduced form thus, attesting to the plants original bisexual nature. Such flowers are said to be functionally male or functionally female.
    Therefore, the correct answer is option E.
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