Question

'Cladode' is a characteristic morphological feature of
A. Asparagus and Ruscus
B. Casuarina and Opuntia
C. Cladophora and Cactus
D. Citrus and Acacia

Answer 1

Hint:- The stem is a specialized organ plant and it’s a part of the plant shoot system. They might range in length from a few millimeters to hundreds of meters. The major functions of the stem are; it provides support to the plant, bearing leaves, flowers, and buds; in some cases, they may store food for
the plant.
Complete step-by-step solution:-
Phylloclade is a modified stem in which branches have continued growth. They become green and flat. It is a typical morphological feature of Opuntia and Casuarina. If phylloclade represents itself with one internode is called cladode. In these branches grow limited and they become green and flat – like leaves. This modified version of the stem, in this type of stem, leaves, is not properly developed, rather the stem becomes flattened and photosynthesis is possessed inside the stem. It is a morphological feature of Asparagus and Ruscus. In asparagus, the lamina present on the asparagus spears is the true leaves. The thick, fleshy asparagus spears keep up to grow, flat, green, leaflike structures called cladodes; cladodes develop in the axils of the scale leaves. The appearance of cladodes in unconnected desert angiosperm families are a superb example of confluent evolution or the independent development of the same characteristic in unrelated taxa.