Question

Plants without leaves during one season are…………….
A)Caducous
B)Deciduous
C)Evergreen
D)Semi green

Answer 1

Hint It is a perennial plant that loses its leaves or stems and this loss is related to water stress. Transpiration is the major cause of loss of water from these plants. These plants shed off their leaves to avoid dehydration.

Complete answer
-At the end of the growing season mostly in the autumn season, deciduous trees lose their leaves. This occurs in the temperate deciduous forest and in the dry seasons in tropical and subtropical deciduous forests.
-The word deciduous comes from the Latin word i.e decidere which means to fall off.
-In deciduous plants, loss of leaf is known as abscission. This type of tree is found in the forest present in the eastern United States, Canada, areas of Japan and China, and most of Europe.
-Broadleaf trees or hardwood trees are the other names for deciduous trees.

Additional information
Caducous - it means the dropping or the shedding off like the gills of most amphibians or the sepals or stipules of certain plants at an early stage of development. For describing the organs or morphological features, a Caducous term is used. Sepals or stipules of certain plants are the most common example of Caducous.
Evergreen - the plant retains their leaves throughout the year. Many tropical species are evergreen having broad-leaved flowering plants. Cone bearing shrubs or conifers trees like pines and firs are the evergreen plants found in cold temperate and Arctic areas.
Semi-evergreen - in this plant lose their foliage for a very short period. In this old leaves fall off and new foliage growth is starting. This type of mechanism can be seen in tropical and subtropical species. Example - Dipteryx odorata

So, the correct answer is, “Deciduous”.

Note:
-A deciduous plant loses its leaves or stems seasonally. Hence, it is a perennial plant and this loss is related to water stress. For example - in the plants, the green portion mostly falls off during the dry season.
-Among the Woody plants the deciduous characteristics have developed repeatedly and include maple, many oaks, and Nothofagus, elm, beech, etc.
-It also includes the number of qualified genera like larch and Metasequoia.