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Morphology of Flowering Plants Test 54

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Morphology of Flowering Plants Test 54
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Weekly Quiz Competition
  • Question 1
    1 / -0
    Grafting method is always good in the plants where seeds are having ______ dormancy period, _______ germination capacity and to produce varieties of seedless fruits.
  • Question 2
    1 / -0
    Angle between leaf and upper or younger part of stem is called as ____
    Solution
    • The angle formed between the petiole/stalk of the leaf and the stem is called the axil and is formed near/at the node that is the point from where the leaf arises

    So, the correct answer is 'axil'

  • Question 3
    1 / -0
    In 1997, an American company got patent rights on which of the following variety through US patent and trademark office:
    Solution
    In 1997, an American company got patent rights on basmati rice through the U.S patent and trademark office.
    Option B is correct.
  • Question 4
    1 / -0
    Which of the following statements are for flowers?
    (i) Flowers are always bisexual
    (ii) They are sexual reproductive organs
    (iii) They are produced in all groups of plants
    (iv) After fertilisation they give rise to fruits 
    Solution
    Some flowers are unisexual and hence statement (i) is incorrect. 
    Flowers are produced by angiosperms only hence statement (iii) is incorrect.
    Thus, the correct answer is (D).
  • Question 5
    1 / -0
    From among the sets of terms given below, identify those that are associated with the gynoecium.
    Solution
    The gynoecium or the female reproductive part of the flower consists of individual members called the carpels or pistils, which may be fused (syncarpous) or free (apocarpous).
    Each pistil is made of a sticky tip called the stigma that holds the pollen grains and helps them germinate. The stigma continues into a hollow tubular structure called the style, that allows movement of pollen tube towards the ovary. The style ends at the ovary, which is a globular or elongated stucture containing a fertile layer called the placenta that bears the ovules. Each ovule contains a haploid embryo sac that bears the egg apparatus, polar nuclei and the antipodals.
    Thalamus is the base or the flattened end of the shoot bearing the floral whorls.
    Tapetum is the nutritious tissue in the anther.
    Stamen is an individual member of the male reproductive whorl or the androecium.
    So, the correct answer is 'Stigma, ovule, embryo sac, placenta.'

  • Question 6
    1 / -0
    Scientific name of green gram is

    Solution
    Green gram is called mung bean. Its scientific name is Vigna radiata.  It belongs to the 
    Order: Fabales
    Family : Fabaceae

    The answer is B
  • Question 7
    1 / -0
    Areca catechu and supari belongs to the family

    Solution
    Areca catechu commonly called Arecanut. It belongs to palm tree species and family Arecaceae or Palmae. The fruit i.e nut of this is betel nut, commonly known as supari in India. 
    So the correct option is B.
  • Question 8
    1 / -0
    In Brassica oleracea var. capitata, the edible part is
    Solution

    Brassica oleracea var. capitata, the common name is cabbage. Cabbage is a typical cool season crop grown for the thickened vegetative bud called as head. It is one of the most  popular and widely grown vegetables and has occupied second position in production after potato. It is a rich source of vitamin A, C and mineral including potassium, calcium, sodium and iron.

  • Question 9
    1 / -0
    Approximate diameter of Victoria regia leaf is
    Solution
    Victoria regia is an aquatic plant with floating leaves which are 4 meters in radius and diameter is around 1.5-1.8 m. These are the largest leaves in the plant kingdom.
  • Question 10
    1 / -0
    Match the items in Column I with Column II and choose the correct alternative.

    Column I
    		Column II
    A. Tubercular storage roots   
    		1. Tinospora
    B. Pneumatophores
    		2. Heritiera
    C. Haustoria
    		3. Asparagus
    D. Prop-roots
    		4. Viscum
    E  Assimilatory roots
    		5. Screwpine
    Solution
    The roots or parts of roots are specialized to serve adaptive purposes.
    1. Tuberous roots - a portion of a root swells for food or water storage, e.g., sweet potato and Asparagus.
    2. Aerating roots (also called as knee root or pneumatophores or Cypress' knee) - roots rising above water such as in some mangrove genera, e.g., Heritiera.
    3. Haustorial roots - roots of parasitic plants that can absorb water and nutrients from other plants, e.g., Mistletoe (Viscum album) and dodder.
    4. Prop roots - they develop only from the nodes of an upright main stem and grow downward towards the soil and fix the plant to the ground more securely. These are aerial roots, e.g., screwpine, sugar cane, bamboo and corn plants.
    5. Assimilatory roots - modified adventitious roots that become green colour and perform photosynthesis are called as assimilatory roots, e.g., Taeniophyllum, Trapa, Tinospora cordifolia. 
    Thus, the correct option is E.
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