Science MCQs

Iodine turns blue-black in the presence of starch.

Both cohesive and adhesive forces contribute to capillary action.

Closing stomata at night reduces water loss.

Pericycle gives rise to lateral roots.

Soil type affects nutrient availability but not directly photosynthesis.

Spongy mesophyll has air spaces for gas exchange.

The radicle of the embryo develops into the primary root.

The root cap protects the delicate meristematic cells of the root tip as it grows through the soil.

Fibrous roots are thin, moderately branching roots found in plants like grasses.

The endodermis, with its Casparian strip, controls the entry of water and solutes into the xylem.