Structural Organisation in Animals

Select the correct position of testis in Periplaneta americana.

Which cell must be present in mucus secreting organs?

Which of the following holds true for blood circulation in earthworm?

Which is not true for cockroach?

Presence of gills in the tadpole of frog indicates that

In frog, mesorchium is a thin fold of membrane extending between

The kind of epithelium present in inner surface of bronchioles and Fallopian tubes is

Which is the first formed tissue in the embryo?

The figure shows different human tissues labelled as $\mathrm{A}$ to $\mathrm{D}$. Which option gives the correct identification of the label, its location and one feature?

Assertion : Gap junctions perform cementing function to keep the neighbouring cells together. Reason : Tight junctions facilitate the cells to communicate with each other by connecting the cytoplasm of adjoining cells,…

Pseudostratified epithelium is found in

Assertion : Blood in cockroach is colourless haemolymph with no respiratory pigment. Reason : Respiration in cockroach occurs through diffusion in haemolymph.