CSIR NET 2022 | Life Science: Diversity of Life Forms |9 November

Which of the following statement is true for Fasciola hepatica (liver fluke)?

Complete four-chambered heart is present in:

In haplontic life cycle

Some species of beetles and fishes can survive at sub freezing temperature. They accomplish this by maintaining cellular integrity using one of the following mechanisms.

Comparative sensitivity of three groups of organisms to single large doses of x-rays or γ-rays delivered at short intervals is shown in the figure below.

The three groups P, Q, R respectively are: