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Reproduction in Plants Test - 8

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Reproduction in Plants Test - 8
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  • Question 1
    1 / -0
    Why is grafting not possible in monocots?
    Solution
    Grafting is not possible in monocots as they lack cambium as it helps in binding the two parts of the stem.
  • Question 2
    1 / -0
    The propagation of plants by tissue culture technique is becoming popular because
    Solution
    The propagation of plants by tissue culture technique is becoming popular because the plants produced have uniform growth and productivity characteristics.
  • Question 3
    1 / -0
    The branch of botany comprising the artificial cultivation of cells into mature fruit forming plants is known as
    Solution
    The branch of botany comprising the artificial cultivation of cells into mature fruit forming plants is known as tissue culture. Single cells, plant cells without cell walls (protoplasts), pieces of leaves, stems or roots can often be used to generate a new plant on culture media given the required nutrients and plant hormones.
  • Question 4
    1 / -0
    Which of the following correctly defines micropropagation?
    Solution
    Raising of plants from a small tissue in culture is called micropropagation. It is used to multiply novel plants, such as those that have been genetically modified or bred through conventional plant breeding methods.
  • Question 5
    1 / -0
    Which of the following is a manmade cereal not found in nature?
    Solution
    Triticale is a manmade cereal not found in nature.Triticale is a hybrid of wheat (Triticum) and rye (Secale).
  • Question 6
    1 / -0
    Which of the following represents the female gamete of angiosperms?
    Solution
    Egg represents the female gamete of angiosperms. Female gametophyte formation is required for sexual and asexual seed development in angiosperms.
  • Question 7
    1 / -0
    Which of the following options are the means by which asexual reproduction in plants can take place?
    I. Bulbs
    II. Corms
    III. Rhizomes
    Solution
    Asexual reproduction can be defined as the process by which offspring are produced from a single parent rather than through fertilization. Asexual reproduction in plants can take place with the help of corms,rhizomes and bulbs.
  • Question 8
    1 / -0
    What do you call the pollination performed by bats?
    Solution
    Pollination performed by bats is called cheiropterophily.Bat pollination is most common in tropical and desert areas that have many night-blooming plants.
  • Question 9
    1 / -0
    Which of the following is the pollination of anther through water?
    Solution
    The pollination of anther through water is called hydrophily. It can occur in one of two ways. Either the pollen grains themselves are carried on or under the surface of the water, or the male flowers break off and float along until they come into contact with a female flower.
  • Question 10
    1 / -0
    Flower is a
    Solution
    Flower is a modified shoot.The sepals and petals may be regarded as modified leaves. Stamens and carpels also show some resemblance to leaves in position, arrangement, internal structure and development.
  • Question 11
    1 / -0
    By which of the following methods can a disease free plant be produced?
    Solution
    A disease free plant can be produced by the method of tissue culture.Plant tissue culture is a collection of techniques used to maintain or grow plant cells, tissues or organs under sterile conditions on a nutrient culture medium of known composition.
  • Question 12
    1 / -0
    What do you call the part of a plant which is used for culturing?
    Solution
    Explant is the part of a plant which is used for culturing. It can be a portion of the shoot, leaves, or some cells from a plant, or can be any part of the tissue from an animal, or from umblical cord tissue.
  • Question 13
    1 / -0
    Which of the following is a male reproductive part of a flower?
    Solution
    Stamen is a male reproductive part of a flower.A stamen typically consists of a stalk called the filament and an anther which contains microsporangia.
  • Question 14
    1 / -0
    Where are the pollen grains produced?
    Solution
    The pollen grains are produced in pollen sac. In angiosperms there are usually four pollen sacs in each anther; they contain the microspore mother cells. In gymnosperms variable numbers of pollen sacs are borne on the microsporophylls that make up the male cone.
  • Question 15
    1 / -0
    Which of the following is a part of female reproductive system?
    Solution
    Megaspore is a part of female reproductive system.These are fertilized by sperm produced by the male gametophyte developing from the microspore.
  • Question 16
    1 / -0
    Which of the following are reproductive parts of a flower?
    Solution
    Stamens and carpels are reproductive parts of a flower.A stamen typically consists of a filament bearing two chambered anthers which contain pollen. The pistil consists of one or more carpels, each consisting of an ovary, style and stigma.
  • Question 17
    1 / -0
    Into which of the following parts of a plant does ovule integument get transformed?
    Solution
    Ovule integument gets transformed into seed coat. It is the outer protective covering of a seed. It is also called testa.
  • Question 18
    1 / -0
    From where does developing pollen obtain its nutrition?
    Solution
    Pollen obtains its nutrition from tapetum.The tapetum is a layer of nutritive cells found within the sporangium, particularly within the anther, of flowering plants.
  • Question 19
    1 / -0
    The fruit develops from
    Solution
    The fruit develops from ovary.
  • Question 20
    1 / -0
    Which of the following parts stores food in germinating seed?
    Solution
    Cotyledon stores food in germinating seed.Species with one cotyledon are called monocotyledonous ("monocots") and Plants with two embryonic leaves are termedas dicotyledonous.
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