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STD 11 - 12. Respiration in plants — NEET STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceNEETSTD 11 - 12. Respiration in plants4 Marks
MCQ
Aerobic respiration is
  • A
    The process in which complete oxidation of organic substances in the absence of oxygen
  • ✓
    The process in which complete oxidation of organic substances in the presence of oxygen
  • C
    The process in which incomplete oxidation of organic substances in the absence of oxygen
  • D
    The process in which incomplete oxidation of organic substances in the presence of oxygen
✓

Answer

Correct option: B.
The process in which complete oxidation of organic substances in the presence of oxygen
b
Aerobic respiration occurs in the presence of oxygen that leads to a complete oxidation of organic substances and releases $C O_{2}$, water and a large amount of energy. This type of respiration is most common in higher organism

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Fill in the blanks and choose the correct option given below.
(i) A prom l otes senescence and abscission of plant organs especially of leaves and flowers.
(ii) The rise in rate of respiration during ripening of fruits is called as respiratory B.
(ii) C regulates many physiological processes so it is the one of the most widely used PGR in agriculture.
(iv) The most widely used compound as source of ethylene is D.
(v) Ethephon hastens fruit ripening in tomatoes and apples and accelerates E in flowers and fruits.
(vi) F is general plant growth inhibitor and an inhibitor of plant metabolism.
(vii) G stimulates the closure of stomata in the epidermis and increase the tolerance of plants to various kinds of stresses. It is also called the H hormone.
(viii) I helps seeds to withstand desiccation and other factors unfavorable for growth. In most situations, it acts as an antagonist to J.
(ix) The response of plants to periods of day/night is termed K.
(x) The sites of perception of light/dark duration are the L in plants.
(xi) The hormonal substance migrates from M to N apices for inducing flowering only when the plants are exposed to the necessary inductive photoperiod.
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