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Morphology of Flowering Plants Test -11

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Morphology of Flowering Plants Test -11
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  • Question 1
    1 / -0

    Rearrange the following zones as seen in the root in vertical section and choose the correct option.

    A. Root hair zone

    B. Zone of meristems

    C. Rootcap zone

    D. Zone of maturation

    E. Zone of elongation

    Solution

    Roots cap is at the tip; followed by zone of meristems. This is followed by zone of elongation and then root hair zone. Zone of maturation comes after all of them.

  • Question 2
    1 / -0

    In an inflorescence where flowers are borne laterally in an acropetal succession, the position of the youngest floral bud in the floral axis shall be

    Solution

    When youngest flower is at the top of the floral axis, this arrangement is called acropetal succession.

  • Question 3
    1 / -0

    The mature seeds of plants such as gram and peas, possess no endosperm, because

    Solution

    Endosperm is a nourishing tissue which provide nourishment to the developing embryo either after or before germination.

  • Question 4
    1 / -0

    Roots developed from parts of the plant other than radicle are called

    Solution

    Taproots and fibrous roots emerge from radicle. Nodular roots arise from root nodules. Adventitious roots usually arise from stems and sometimes from leaves.

  • Question 5
    1 / -0

    Venation is a term used to describe the pattern of arrangement of

    Solution

    The complex net like structure in the leaves are the veins which carry food and water. Special arrangement of veins in a leaf is called venation. Based on the arrangement of veins and veinlets, venation is of two types, viz. parallel and reticulate.

  • Question 6
    1 / -0

    Endosperm, a product of double fertilization in angiosperms is absent in the seeds of

    Solution

    The endosperm is absorbed by embryo in non-endospermic seeds. This is what happens in orchid seeds.

  • Question 7
    1 / -0

    Many pulses of daily use belong to one of the families below

    Solution

    Fabaceae is also referred to as Leguminosae and pulses are also known as legumes.

  • Question 8
    1 / -0

    The placenta is attached to the developing seed near the

    Solution

    Hilum is the scar on seed coat through which seed was attached to the fruit. Chalaza is base of the ovule and thus is part of ovule. Testa is the outer covering of the seed and micropyle is a small opening in seed coat through which water enters seed.

  • Question 9
    1 / -0

    Which of the following plants is used to extract the blue dye?

    Solution

    The term ‘indigo’ for blue dye should give clue for this answer.

  • Question 10
    1 / -0

    Match the following and choose the correct option

    Column I Column II
    A. Aleurone layer i. without fertilization
    B. Parthenocarpic fruit ii. Nutrition
    C. Ovule iii. Double fertilization
    D. Endosperm iv. Seed
  • Question 11
    1 / -0
    The cuticle present above the epidermis is helpful in reducing 
    Solution
    The cuticle is comprised of polymers of wax. This layer is present on the surface of the epidermis of leaf and stem. This is the waxy and waterproof layer. This layer prevents the loss of water from the leaves and stem. This protective layer allows the retention of the water. This helps to reduce the loss of water in the form of water vapour by transpiration. 
    Thus, the correct answer is option A. 
  • Question 12
    1 / -0
    To perform an experiment to identify the different parts of an embryo of a dicot seed, first of all you require a dicot seed. Select dicot seeds from the following group:
    Wheat, Gram, Maize, Pea, Barley, Ground-nut
    Solution
    The angiosperm plants are further classified into monocot and dicot plants. The dicot plants have seeds with two cotyledons. The examples of the dicot plants are groundnut , gram and pea. The remaining plants are the examples of the monocot plants. 
    Thus, the correct answer is option B. 
  • Question 13
    1 / -0
    Epistomatic stomata are mostly found in 
    Solution
    Epistomatic stomata is having stomata on the upper surface of the leaf. This type of stomata is mostly found in aquatic plants. Aquatic plants float on the surface of the water and therefore stomata are not found in the lower epidermis. Stomata are found on the upper epidermis because for direct exchange of gases between the leaf and the atmosphere. 
  • Question 14
    1 / -0
    A fibrous root system is efficient in
    Solution
    A fibrous root system is efficient in good anchorage because the roots of the plant are diversified into different directing increasing the surface area for anchorage.
    So, the correct option is 'Good anchorage'.
  • Question 15
    1 / -0
    Which is not a product of root?
    Solution
    Potato is not a product of root because it is a modification of underground stem called stolons where food is stored and becomes tuberous.
    So, the correct option is 'Potato'.
  • Question 16
    1 / -0
    Anthotaxy is?
    Solution

  • Question 17
    1 / -0

    Part of Glycyrrhiza glabra having expectorant properties is

    Solution

    Liquorice is the root of Glycyrrhiza glabra from which sweet flavour can be extracted. The liquorice plant is a herbaceous, perennial legume native to southern Europe and parts of Asia such as India. Liquorice root extracts are used in herbal and traditional medicine. It is used as an expectorant (promotes the secretion of sputum from air passages) in the treatment of coughs. So, the correct answer is 'Root'.

  • Question 18
    1 / -0
    A fleshy root which is tapering at both ends is
    Solution
    The fleshy root which is tapering at both ends is fusiform roots because they give a spindle-shaped appearance.
    So, the correct option is 'Fusiform'.
  • Question 19
    1 / -0
    In which condition roots are modified for respiration?
    Solution
    Pneumatophore or respiratory roots that are formed by plants that live in saline marshy condition as they suffer lack of oxygen and these roots help in supply of a good amount of oxygen to the plants by the pores present in their upper ends called as pneumatophores.
    So, the correct option is 'Saline marshy'.
  • Question 20
    1 / -0
    In Ipomoea-batatus$$/$$ Sweet Potato the food is stored in
    Solution
    A. root tuber is the root modification in which the food is stored in the root. It is seen in Ipomoea batatas as in this plant food is stored under the ground.
    B. Stem tuber is stem modification where the food is stored in stems.
    C. Bud is the small overgrowth arising either from roots stem or leaves.
    D. Leaves usually store water and minerals like in eucalyptus etc
    So, the correct answer is 'Root tuber'.
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