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Sexual Reproduction in Flowering Plants Test - 40

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Sexual Reproduction in Flowering Plants Test - 40
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  • Question 1
    1 / -0
    Pollination by bat is called ______________.
    Solution

    • Ornithophily means bird pollination, is the pollination of flowering plants by birds.
    • Pollination done by bats is known as chiropterophily. Various fruits depend on bats for pollination, such as mangoes, guavas, and bananas. Bat pollination is an essential process in tropical communities with 500 tropical plant species. They are completely, or partially, dependent on bats for pollination.
    • Malacophily refers to pollination by snails.
    • Anemophily or wind pollination refers to pollination whereby pollen is distributed by wind.
    So, the correct answer is option B.

  • Question 2
    1 / -0
    When the gametophyte is not formed by spores but by any
    other part of sporophyte, it is known as

    Solution
    Apospory is the formation of gametophyte directly from sporophyte without the meiotic formation of spores.
  • Question 3
    1 / -0
    The ferns in which the entire sporangium develops from a single superficial cell of the saprophyte are known as

    Solution
    Such a sporangium arises from a single superficial initial. It divides operatically into outer and inner components. While the inner cell forms the stall, the outer gives rise to sporangium proper. In Marattia alata, the sporangia in a sarus may fuse to form a synanjoi.
  • Question 4
    1 / -0
    If the haploid number of chromosomes in Pinus is 12, the
    number in its endosperm cells will be

    Solution
    Because endosperms of p!nus are always haploid and is formed before fertilization in ovules.
  • Question 5
    1 / -0
    Match the names of branches of biology listed under column I with the field of study given under column II; choose the answer which gives the correct combination of the alphabets of the two columns

    Column I                                    Column II

    (Branch of biology)                    (Field of study)

    A.Palynology                             p.     Silkworms

    B.Oncology                               q.     Pollens and pollen grains

    C.Phycology                              r.     Cancer

    D.Sericulture                             s.     Algae

    Solution

    Palynology - Study of spores and pollen grains. 

    Oncology - Study of cancer/tumours Phycology - Study of alage.

    Sericulture - Rearing of silkworm.

  • Question 6
    1 / -0
    Which of the following plant product is the hardest 
    Solution
    Sporopollenin is a polymer, tougher than lignin but with similar properties, composed cheifly of carotenoids makes spores and pollen grains of plants resistant to biodegradation. It is the hardest plant product.
  • Question 7
    1 / -0
    The most advanced type of inflorescence is
    Solution
    In capitulum, the receptacle is flat, bears sessile small florets in a centripetal manner. Individual florets are bracteate. A cluster of florets is surrounded by involucre. It has ray floret and disc floret. e.g., Zinnia. 
    Therefore, the correct answer is option D.
  • Question 8
    1 / -0
    Flower is intersexual in
    Solution
    A flower which has both stamens and carpels as organs of reproduction is known as bisexual or hermaphrodite or intersexual flower, e.g., hibiscus.
    Thus, the correct answer is option D.
  • Question 9
    1 / -0
    Free lateral stipulate occur in
    Solution
    A small leaf-like appendage on each side at the base of the petiole in dicotyledons is called as a stipule. The arrangement and structure of the stipules are called as the stipulation. When the pair of stipules is arranged freely on either side of the petiole or leaf base, it is called as free lateral stipules. For example, Hibiscus and Gossypium. 
    Therefore, the correct answer is option D.
  • Question 10
    1 / -0
    Flower of Hibiscus is
    Solution
    When flower is divided by any vertical plane into two equal halves, then it is called as actinomorphic flower. When petals, sepals and stamens are situated below the ovary, the flower is called as hypogynous and in this condition ovary will be superior. e.g., Mustard, Chinarose, Brinjal.
    So, the correct answer is  'Actinomorphic and hypogynous'
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