Step 1: Understanding Gymnosperm Pollination Gymnosperms exhibit direct pollination since their ovules are exposed (naked) and pollen lands directly on the ovule. This is in contrast to angiosperms, where pollen lands on the stigma before fertilization.
Step 2: Evaluating the Assertion and Reason - Assertion (A) is correct: Gymnosperms have direct pollination. - Reason (R) is correct: The ovules are exposed, leading to direct pollen reception.
- (R) correctly explains (A), making option (1) correct.
Match the following:
Match the following:
If \( \sqrt{5} - i\sqrt{15} = r(\cos\theta + i\sin\theta), -\pi < \theta < \pi, \) then
\[ r^2(\sec\theta + 3\csc^2\theta) = \]
The system of simultaneous linear equations :
\[ \begin{array}{rcl} x - 2y + 3z &=& 4 \\ 2x + 3y + z &=& 6 \\ 3x + y - 2z &=& 7 \end{array} \]
Calculate the determinant of the matrix: