Human Population — Biology STD 10 — Question

Why is the green leaf boiled with water in the test of starch?

Assertion (A): Transpiration helps in the upward movement of water in plants.
Reason (R): Transpiration creates a suction force which pulls water up through the xylem vessels.

Choose the Odd One Out:

In hot, dry regions, plants adapt to reduce water loss. Cacti have thick water-storing stems and spiny leaves. Acacia trees have small, waxy leaves and deep roots. Succulents store water in thick leaves and have few stomata that open at night.
Which of the following is NOT an adaptation to reduce excessive transpiration?

Mendel was born in __________

Agranulocytes are:

If a plant is kept covered with a polythene sheet, we notice some water drops on the inner side of the sheet after sometime. This is due to __________.

The change in focal length of an eye lens to focus the image of objects at varying distances is done by the action of the :