Test: Adaptations in Plants- 1 - Class 4 MCQ

The stems in lotus plants are hollow and very light. This helps the leaves to float on water.

The trees that grow in hilly areas have needle like leaves, which are very tough and can survive in the cold, snow and wind.

Desert plants have adapted to their environment to minimize water loss. One common adaptation is the modification of leaves into spines. This reduces the surface area through which water can be lost, significantly decreasing transpiration.

Therefore, the correct adaptation developed by desert plants to manage water loss is: Their leaves are modified into spines.

Evergreen trees retain their leaves throughout the year, allowing them to photosynthesize continuously. This is in contrast to deciduous trees, which shed their leaves annually to conserve energy during unfavorable seasons.

In cactus plants, photosynthesis occurs in its thick and fleshy stems.

• In marshy areas, soil does not contain air.
• To adjust to marshy conditions, the plant should develop breathing roots.

• Mangroves grow in marshy areas. Marshy soil have clay soil with plenty of water and has no air.
• The water cannot drain away and remains in the soil.
• Hence the plants in the soil develop breathing roots that help the roots to breathe.

Check out the image of Mangroves below: 

• Trees in hilly areas are usually tall and cone shape and not dome shaped.
• Trees in hilly areas do not have flowers.
• They are conifers and their leaves are needle-shaped.

• Water hyacinth is an aquatic plant that floats on water.
• Water hyacinth does not need soil to grow.

Plants of the grass family provide us with cereals, hence they are most useful to us.