If a plant species has $8$ chromosomes in its synergid cells,how many chromosomes will be present in its endosperm?

The covalent alkaline earth metal halide $(X = Cl, Br, I)$ is

Which of the following vessels carries the most oxygenated blood?

Explain the following term with an example: Tridentate ligands.

Brush bordered epithelium is found in

If $\theta$ lies in the first quadrant and $5 \tan \theta = 4$,then $\frac{5 \sin \theta - 3 \cos \theta}{\sin \theta + 2 \cos \theta}$ is equal to