Olympiad Test Level 1: Plants and Animals - 2 - Class 4 MCQ

Entomology is the scientific study of insects. Pathology is the study of diseases. Virology is the study of virus and viruslike agents. Microbiology is the study of microorganisms.

Cacti have thick and fleshy stems that are specially adapted to store water. This adaptation helps them survive in desert environments where water is scarce. The stored water allows cacti to withstand long periods of drought.

Plants generally store food in the form of starch in their roots, leaves, seeds, or other parts, but not typically in the stem like cacti. In cacti, the stem's primary role is to store water rather than food.

Giraffes have long necks which help them to eat acacia leaves.

Sharks have fins which help them to swim.

Gills help fish to breathe in water.

Evergreen trees have leaves throughout the year.

• Terrestrial animals, like mammals, birds, and reptiles, primarily breathe through lungs, which are specialized organs for gas exchange.
• Lungs allow these animals to take in oxygen from the air and expel carbon dioxide, a waste product of metabolism.
• This process occurs through inhalation and exhalation, enabling efficient breathing even when they are on land.
• Other structures, like gills or scales, are not used for breathing in terrestrial environments.

Plants grown on mountains are of conical shape.

Teak tree grows in plain.

Palms and tamarind grows in hot and damp areas.

The trees that grow in marshy land are mangroves.

Dolphin is an aquatic animal.

Mushrooms are fungi that have stem, a cap and gills.

Mammals have hair or fur, amphibians can live on both land and water, birds have feathers and fish respire through gills.

Bamboo is the fastest growing plant.