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Plant Kingdom Test - 95

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Plant Kingdom Test - 95
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  • Question 1
    1 / -0
    Mannitol is stored food of
    Solution

    A. Correct option is- D
    B. Explanation for the correct option.

    • Phaeophyceae are brown algae
    • These algae are brown in colour is due to the presence of pigment fucoxanthin in addition to chlorophyll pigments.
    • In these algae, the food is stored in the form of starch. 

  • Question 2
    1 / -0
    Which is responsible for peat formation?
    Solution

    A. Correct option is- C
    B. Explanation for the correct option.

    • The botanical name of the peat moss is Sphagnum.
    The partially decomposed remains of formerly living Sphagnum moss from bogs are known as peat moss.
    • It increases the water-holding capacity of soil and enriches the soil with nutrients.
    • It increases the capillary forces and cation exchange capacity.

  • Question 3
    1 / -0
    Besides forming substrate for laboratory culture, agar is used in ________.
    Solution
    Agar can be used as a laxative, an appetite suppresant, a vegetarian substitute for gelatin, a thickness for soups, in fruit preserves, ice cream, as a clarifying agent in brewing, and for sizing paper and fabrics.
    So, option D is the correct option.
  • Question 4
    1 / -0
    A plant having thallose plant body, developing embryo and reproducing by means of spores will be placed in
    Solution
    In bryophytes (liverworts), embryo formation occurs in the gametophytic thallose body. During sexual reproduction in liverworts, male and female sex organs are produced either on the same or on different thalli. The sporophyte formed is differentiated into a foot, seta, and capsule. After meiosis, spores are produced within the capsule. These spores germinate to form free-living gametophytes.
    So, the correct answer is option D.
  • Question 5
    1 / -0
    Mannitol is stored food in 
    Solution
    Food is stored the form of luminarin, mannitol and oil in Fucus. Food is stored the form of starch and oil in Chara. Food is stored the form of floridean starch and galactan polymers in Porphyra and Gracilaria. 
    Thus, the correct answer is option C.
  • Question 6
    1 / -0
    Archegoniophore occurs in
    Solution
    Archegoniophore is a stalk of a prothallium on which archegonia grows. Marchantia is a genus of liverworts. The thallus of Marchantia is dioecious in nature. It produces either female archegoniophores or male antheridiophores. 
    Thus, the correct answer is option D.
  • Question 7
    1 / -0
    Which of these produces carrageenan? 
    Solution
    Carrageenan is a common name given to polysaccharides extracted from certain seaweeds like red edible seaweeds. It is used as gelling, thickening, and stabilizing agent. However, it can cause immune dysfunction if administered intravenously
    Thus, the correct answer is option C.
  • Question 8
    1 / -0
    Dichotomous branching occurs in
  • Question 9
    1 / -0
    Which one is peat moss? 
    Solution
    Sphagnum is the scientific name of peat moss. It is also called as bog moss. It has high pH. Hence, it is used for plants growing in acidic condition, such as blueberries. It helps in moisture absorption from soil.
    Thus, the correct answer is option A.
  • Question 10
    1 / -0
    New systematics introduced by Sir Julian Huxley is also called
    Solution
    Biosystematics is the taxonomy based on the study of the generic evolution of plant and animal populations which was introduced by Sir Julian Huxley in the year 1940.
    So, the correct option is 'Biosystematics'.
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