Question

Which of the following plant is not an example of heterophylly
(a)Cotton
(b)Mango
(c)Larkspur
(d)Coriander

Answer 1

Hint: The genus Mangifera of the family Anacardiaceae which is a common garden tree throughout the tropics. This is a delicious dessert fruit which is particularly high in vitamin A. The fruit is also eaten raw, processed into pickles, pulps, jams, and chutneys, and is frozen or dried.

Complete answer:
Plants display amazing morphological diversity of leaves. The leaves in some these plant species can undergo considerable form alteration which is the response to environmental conditions via a process called heterophylly.
Heterophylly is observed in those belonging to the Nymphaeales, Ranunculales, Saxifragales, Myrtales, Brassicales, Lamiales, and lots of other orders. Thus, mangoes do not show heterophylly.

Additional Information: -Heterophylly was defined as leaf shape alteration in response to environmental conditions, which is unlike heteroblasty and anisophylly.
-There are remarkable morphological differences in these heterophyllous plants between their submerged and terrestrial environments.
-Narrow or deeply serrated or lobed leaves which also are present in aquatic plants and should provide for similar interactions with the encompassing environment, which includes factors beyond the submerged conditions for mineral nutrient and carbon dioxide uptake.
-Leaves under submerged conditions tend to possess a skinny, filamentous, or linear shape, degraded structure, and therefore the leaves usually lack stomata cells, which suggests plants must directly absorb nutrients and exchange gas from water.
-Multiple factors such as carbon dioxide concentration, light intensity and quality, temperature, osmotic potential, and mechanical forces are involved in the submergence response.

So, the correct answer, ‘Mango.’

Note: -The narrow leaves of amphibious plants situated along riverbanks where flooding always occurs.
-They can withstand the destructive force of water flow as well.
-In deepwater rice, Oryza sativa, accumulation of ethylene in the tissues during submergence which has been shown to induce the elongation of internodes.