List of top Geology Questions on Morphology and functional morphology of invertebrates

A cut slope is made in a silty clay soil for a new road project, as shown in the figure. The locations of the ground water table (GWT) and potential failure surface are shown in the figure. After the cut is made, the excess pore water pressure is fully dissipated, and the shear stress at the point A is 60 kN/m². The factor of safety at the point A for long-term stability is .......... (rounded off to 2 decimal places).

A cut slope is made in a silty clay soil for a new road project, as shown in the figure. The locations of the ground water table (GWT) and potential failure surface are shown in the figure. After the cut is made, the excess pore water pressure is fully dissipated, and the shear stress at the point A is 60 kN/m². The factor of safety at the point A for long-term stability is .......... (rounded off to 2 decimal places).

Match the following invertebrates in Group-I with their morphological features in Group-II.

	Group-I		Group-II
P	Trilobite	1	Periproct
Q	Brachiopod	2	Hypostome
R	Bivalve	3	Deltidial plate
S	Echinoid	4	Lunule

Which of the following bivalves is/are swimmers?

Match the following fossil taxa in Group I with their corresponding features in Group II. \begin{center} \begin{tabular}{p{0.35\linewidth}p{0.35\linewidth}} Group I & Group II
P. Bryozoa & 1. Denticles
Q. Ostracoda & 2. Chamber
R. Foraminifera & 3. Carapace
S. Conodont & 4. Zooid
\end{tabular} \end{center}

Based on the three statements given below, choose the CORRECT option. Statement I: Echinoids have water vascular system.
Statement II: Delthyrium and pedicle foramen are found in the brachial valve of brachiopods.
Statement III: Cardinal teeth, adductor muscles and chondrophore are found in bivalves.