Which of the following plants produces seeds but not flowers?

The first vascular plants are:

$A$ nucleotide is composed of which subunits?

The angle between the tangents drawn to the parabola $y^2=4x$ from the point $(1,4)$ is

If $\alpha, \beta, \gamma$ are the roots of the equation $x^3+4x+1=0$,then $(\alpha+\beta)^{-1}+(\beta+\gamma)^{-1}+(\gamma+\alpha)^{-1}$ is equal to

Assertion : $LiCl$ is predominantly a covalent compound.
Reason : Electronegativity difference between $Li$ and $Cl$ is too small.