Question
Reproductive structure are flowers in:
- Gymnosperms.
- Pteridophytes.
- Angiosperms.
- Both (a) and (b).
Reproductive structure are flowers in:
Explanation:
Angiosperms are also called flowering plants. In the angiosperms or flowering plants, the pollen grains and ovules are developed in specialised structures called flowers.
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When a rubber balloon held between the hands is pressed, its shape changes. This happens because:
According to one of the Kepler's laws of planetary motion:
$\text{r}^2\propto\text{T}^3$
$\text{r}\propto\text{T}^2$
$\text{r}^3\propto\text{T}^2$
$\text{r}^3\propto\frac{1}{\text{T}^2}$