MCQ
Ethylene is used for:
- ARetarding ripening of tomatoes.
- BHastening of ripening of fruits.
- CSlowing down ripening of apples.
- DBoth b and c.
Explanation:
Ethylene is a fruit ripening hormone. It stimulates all the biochemical changes which take place upon fruit ripening.
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$(I)$ Hypothalamus is the basal part of diencephalon
$(II)$ It regulates a wide spectrum of body function
$(III)$ Two type of hormones are produced by hypothalamus.
$(IV)$ oxytosin is hypothalamic hormone.
$II.$ It consists of cells which are thickened at the corners
$III.$ It often contains chloroplast
$IV.$ Intercellular spaces are absent
$V.$ They provide mechanical support to growing parts of plants The above characters are attributed to