Question

The important depositional landform produced by glaciers is ____________.
A. Flood plants
B. Moraines
C. Barchans
D. Inselberg

Answer 1

Hint: A glacier is a huge mass of ice which moves gradually, frequently down a mountain valley. It is often referred to as the river ice as they move swiftly and act like water.

Complete answer: Glacier masses are formed when ceaseless snowfall happens upon the upper surface in the zone of the highest elevation. This snow accumulates each year in spots where the pace of loss of snow by ablation in summer is less than the pace of receipt of snow. As time goes, it gradually solidifies to form ice pellets and every year new layers of snow cover the past layers.

Now let us examine the options
Option A - Flood plants are plants that can survive floods.
Option B - The presence of littered debris at the edges or the end of the ice sheet or between icy masses are called moraines. Moraines are till or rock debris that is collected or carried by a moving glacier. So it is an important depositional landform created by glaciers.
Option C - Inselberg is the remains of a mountain which has appeared due to wind erosion.
Option D - Barchans are crescent-shaped sand dunes. The point of the dune, called the wings of the barchan, are curved downwards and partially enclose the slip face.

Thus, the correct answer is option (B).

Note: Moraines are divided into four categories - terminal moraines are toe deposits; lateral moraines are formed along the sides parallel to glacial valleys and may join terminal moraines to form horseshoe ridge; ground moraines are the thickly deposited tills over the valleys floors by the retreating valley glaciers and central moraines in the centre of a glacial valley flanked by lateral moraines are called medial moraines.