Self Studies
Self Studies
Self Studies
Self Studies
Selfstudy
Selfstudy

Plant Growth and Development Test - 23

Result Self Studies

Plant Growth and Development Test - 23
  • Score

    -

    out of -
  • Rank

    -

    out of -
TIME Taken - -
Self Studies

SHARING IS CARING

If our Website helped you a little, then kindly spread our voice using Social Networks. Spread our word to your readers, friends, teachers, students & all those close ones who deserve to know what you know now.

Self Studies Self Studies
Weekly Quiz Competition
  • Question 1
    1 / -0
    Which of the following is indispensable in callus culture?
    Solution
    Kinetin hormone in plants helps in the stimulation of cell multiplication. Thus, in a callus culture where the undifferentiated callus gives rise to an entire plant, kinetin is important. Kinetin given in this tissue culture method will promote mitotic cell divisions.
  • Question 2
    1 / -0
    Cytokinins are formed in
    Solution
    Cytokinins are phytohormones which stimulate mitotic divisions. Thus, it is mostly found in regions of rapid multiplication of cells like meristematic regions. They are found in regions of continuous growth like root, young leaves, developing fruits and seeds.
    So, the correct answer is option A.
  • Question 3
    1 / -0
    For plant tissue culture, among the following one is required
    Solution
    Kinetin is a phytohormone, which is important for plant tissue culture. It is because of the ability of cytokinin to promote cytokinesis and karyokinesis. It makes this possible by inducing mitotic divisions.
    So, the correct answer is option B.
  • Question 4
    1 / -0
    Which of the following causes delaying of senescence?
    Solution
    Cytokinins retard the aging in plants. The effect is called as Richmond-Lang effect. Richmond-Lang effect is retardation of aging due to cytokinins which acts by retarding the rate of destruction of chlorophyll and yellowing of leaves.
    Thus, the correct answer is option A.
  • Question 5
    1 / -0
    A plant hormone used for inducing morphogenesis in plant tissue culture
    is ........................
    Solution
    Morphogenesis is the process of organ formation. Cytokinin is a plant hormone which plays a major role in organ formation or morphogenesis with the presence of auxin. It helps in rapid multiplication of cells by repeated cytokinesis and karyokinesis.
  • Question 6
    1 / -0
    Pineapple can be made to flower in off season by ............
    Solution
    Ethylene gas acts to retard flowering in most of the plants. Whereas, in the case of pineapple, it increases the flowering in off season. Ethylene gas is also found useful in ripening fruits, when sprayed on to it.
  • Question 7
    1 / -0
    Which of the following induces flowering in short day plant?
    Solution
    Cytokinin promotes flowering in short day plants. Lemna paucicostata, normally a short day plant, can be induced to flower under long day conditions only when cytokin is provided along with a medium which contains a high level of ferric citrate.
    So, the correct answer is option B.
  • Question 8
    1 / -0
    A higher proportion of ethylene is found in ...............
    Solution
    Ethylene gas is a gaseous hormone which stimulates the transverse or isodiametric growth but retards the longitudinal. It is having a prominent ability to promote early ripening of fruits when sprayed on to it.
  • Question 9
    1 / -0
    The cut flowers and vegetables can be kept fresh a long period by this
    plant hormone ...............
    Solution
    Cytokinin is the plant hormone which is found to have profound effects in delaying the ageing of plant and thus increases the shelf life of vegtables and fruits. It acts by retarding the destruction and degeneration of chlorophyll and proteins. This is called as 'Richmond Lang effect'.
  • Question 10
    1 / -0
    All the cytokinins are ..............
    Solution
    Cytokinins are a class of plant growth substances that promote cell division, or cytokinesis, in plant roots and shoots. They are aminopurines by their chemical nature.
Self Studies
User
Question Analysis

  • Correct -

  • Wrong -

  • Skipped -

My Perfomance
  • Score

    -

    out of -
  • Rank

    -

    out of -
Re-Attempt Weekly Quiz Competition
Self Studies Get latest Exam Updates
& Study Material Alerts!
No, Thanks
Self Studies
Click on Allow to receive notifications
Allow Notification
Self Studies
Self Studies Self Studies
To enable notifications follow this 2 steps:
  • First Click on Secure Icon Self Studies
  • Second click on the toggle icon
Allow Notification
Get latest Exam Updates & FREE Study Material Alerts!
Self Studies ×
Open Now