MCQ
Water stress causes:
- AOpening of stomata.
- BIncrease in metabolic rate.
- CWilting of leaves.
- DLesser availability of carbon dioxide.
Explanation:
Water stress causes closure of stomata. Since stomata is closed carbon dioxide available to plants is less.
Metabolic rate decreases which causes wilting of leaves.
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($i$) It consists of a series of fused segmentally arranged ganglia joined by paired longitudinal connectives on the ventral side.
($ii$) There are six ganglia lie in the thorax, and three in the abdomen.
($iii$) The sense organs are antennae, eyes, maxillary pulps, labial pulps and anal cerci etc.
($iv$) Each eye consists of about $5000$ hexagonal ommatidia.