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

Fungus makes the bread soft and fluffy.

- The largest fish in the world is the whale shark.
- Whale sharks can grow up to 40 feet long or more.
- Despite their massive size, they are gentle giants and feed mainly on plankton.
- They have distinctive patterns of white spots and stripes on their bodies.
- Whale sharks are found in warm waters around the world.
- Unlike whales, which are mammals, whale sharks are true fish, classified under the group of cartilaginous fish.

Duckweed is an aquatic plant which consists of a cluster of leaves with small roots hanging down into water. Opuntia is also called prickly pear, it belongs to cactus family. They have spines instead of leaves. Nepenthes is also known as tropical pitcher plant. They are carnivorous plants which capture insects or other prey by means of modified pitcher-shaped leaves that functions as traps. Cuscuta have thin stems with their leaves reduced to minute scales.

Plants growing in drier conditions tend to have smaller number of stomata on their lower leaf to save water loss.

Fir, Spruce and Deodars are examples of Coniferous trees.

Animals use mimicry and camouflage to defend themselves against predators by looking harmful or pretending to be injured or dead.

A chameleon changes its colour to blend in with its surroundings and this is called camouflage in snow.

Swollen stem of cactus is important to absorb more water.

Fish can move in water with the help of fins.

Mammals are warm  blooded animals as their bodies are covered with hair or fur that helps them to keep the temperature constant.