In which of the following is the notochord present in the embryonic stage?

Which of the following fungi is not responsible for ringworm?

The period of revolution of planet $A$ around the sun is $8$ times that of planet $B$. The distance of planet $A$ from the sun is how many times greater than that of planet $B$ from the sun?

In $\Delta ABC$,the expression $a(\cos^2 B + \cos^2 C) + \cos A(c \cos C + b \cos B)$ is equal to:

Which one of the following is not correct?

The chief water conducting elements of xylem in gymnosperms are