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Biology · Textbook solutions

Reproduction in Lower and Higher Plants

Every solved example, exercise, and miscellaneous question, in the order the textbook teaches them. Plus every board question asked from this chapter. · 27 questions

Exercise

27 q

Q1. Multiple choice questions

Practice · 6
  1. Multiple choice questions.
    Ex Q1(1)
    Insect pollinated flowers usually posses ................

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  2. Ex Q1(2)
    In ovule, meiosis occurs in ..........

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  3. Ex Q1(3)
    The ploidy level is NOT the same in ......

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  4. Ex Q1(5)
    If diploid chromosome number in a flowering plant is 12, then which one of the following will have 6 chromosomes?

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  5. Ex Q1(6)
    In angiosperms, endosperm is formed by/ due to ..........

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  6. Ex Q1(7)
    Point out the odd one ..........

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Q2. Very short answer type questions

Practice · 10
  1. Very short answer type questions
    Ex Q2(1)
    Name the part of gynoecium that determines the compatible nature of pollen grain.
  2. Ex Q2(2)
    How many haploid cells are present in a mature embryo sac ?
  3. Ex Q2(3)
    Even though each pollen grain has 2 male gametes, why atleast 20 pollen grains are required to fertilize 20 ovules in a particular carpel?
  4. Ex Q2(4)
    Define megasporogenesis.
  5. Ex Q2(5)
    What is hydrophily ?
  6. Ex Q2(6)
    Name the layer which supplies nourishment to the developing pollen grains.
  7. Ex Q2(7)
    Define parthenocarpy.
  8. Ex Q2(8)
    Are pollination and fertilization necessary in apomixis ?
  9. Ex Q2(9)
    Name the parts of pistil which develop into fruits and seeds.
  10. Ex Q2(10)
    What is the function of filiform apparatus ?

Q3. Short Answer Questions

Practice · 4
  1. Short Answer Questions
    Ex Q3(1)
    How polyembryony can be commercially exploited ?
  2. Ex Q3(2)
    Pollination and seeds formation are very crucial for the fruit formation. Justify the statement.
  3. Ex Q3(3)
    Incompatibility is a natural barrier in the fusion of gametes. How will you explain this statement?
  4. Ex Q3(4)
    Describe three devices by which cross pollination is encouraged in Angiosperms by avoiding self pollination.

Q4. Long Answer Questions

Practice · 4
  1. Long Answer Questions
    Ex Q4(1)
    Describe the process of double fertilization.
  2. Ex Q4(2)
    Explain the stages involved in the maturation of microspore into male gametophyte.
  3. Ex Q4(3)
    Explain the development of dicot embryo.
  4. Ex Q4(4)
    Draw a labelled diagram of the L.S. of anatropous ovule and list the components of embryo sac and mention their fate after fertilization.

Q5. Fill in the blanks

Practice · 1
  1. Ex Q5
    Fill in the blanks: The ..................... collects the pollen grains. The male whorl, called the ..................... produces ..................... . The pollen grains represent the ........................ The .................... contains the egg or ovum. ..................................................... takes place when one male gamete and the egg fuse together. The fertilised egg grows into seed from which the new plants can grow. The ................................ is the base of the flower to which other floral parts are attached. ......................... is the transfer of pollen grains from anther of the flower to the stigma of the same or a different flower Once the pollen reaches the stigma, pollen tube traverses down the ................... to the ovary where fertilisation occurs. The .......................... are coloured to attract the insects that carry the pollen. Some flowers also produce ............... or .............. that attracts insects. The whorl ...................... is green that protects the flower until it opens.

Q6. Label the parts of seed

Practice · 1
  1. Ex Q6
    Label the parts of seed.

Q7. Match the column

Practice · 1
  1. Ex Q7
    Match the column.
    Column - I (Structure before seed formation.Column - II (Structure after seed formation.
    A. FuniculusI. Hilum
    B. Scar of OvuleII. Tegmen
    C. ZygoteIII. Testa
    D. Inner integumentIV. Stalk of seed
    V. Embryo

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