Both a short day plant and a long day plant can flower simultaneously in a given place'. Explain.

A solid disc and aring,both ofradius ID cm are placed on ahorizontal table simultaneously, with initial angular speed equal to 10 p rad s_!. Which of the two will start to roll earlier? The co-efficient ofkinetic frictionis is mu_k=0.2

Why should there be a long distance transport system in plants?

Name two plants whose flowers have stamens of varifying lengths

By looking at which internal structure of a plant can you tell whether a plant is C_3 or C_4 ? Explain.

Name a plant that produces asymmetric (irregular) flowers.

Name any four substances that need to be transported in flowering plants.

Name the two opening in plants through which exchange of gases takes place.

The Class X students of a secondary school in Krishinagar have been allotted a rectangular plot of land for their gardening activity.Sapling of Gulmohar are planted on the boundary at a distance of 1 m from each other.There is a triangular grassy lawn in the plot as shown in the Fig.7.14.The students are to sow seeds of flowering plants on the plot. (ii) What will be the coordinates of the vertices of trianglePQR if C is the origin?