Test: Diversity in the Living World - Class 6 MCQ

Biodiversity means all the different types of living things like plants, animals, and tiny organisms found in one area. For example, in a park, you might see grass, trees, birds, butterflies, and ants. All these living things together make up the biodiversity of that park.

Herbs are small plants that have soft, green stems. They are not very tall and are easy to bend. Examples of herbs are mint, coriander, and basil.

Trees are big, tall plants that have a hard, woody stem called a trunk. This trunk helps the tree grow tall and stand strong. Examples of trees are mango, neem, and oak. 

Hibiscus leaves have reticulate venation, which means their veins form a net-like pattern. If you look closely at a hibiscus leaf, you will see that the smaller veins spread out from a thick central vein and connect to each other, creating a network. This is different from parallel venation, where the veins run straight and do not form a net.

A frog is an amphibian because it can live both in water and on land. Amphibians are special animals that can survive in two types of places. Frogs start their life in water as tadpoles and later grow legs to live on land.

The other animals, like lions, dolphins, and eagles, cannot live both in water and on land, so they are not amphibians.

A camel is perfectly suited for desert life. It has special features like:

• A hump to store fat, which it can use as energy when food is scarce.
• The ability to survive without water for many days because it stores water in its body.
• Long legs and wide hooves to walk on sand without sinking.
• It does not sweat much, so it loses very little water.

Other animals like zebras and frogs need more water, and penguins live in cold places, not deserts.

A forest is a habitat with many trees and a lot of wildlife like birds, monkeys, and insects. Forests are full of plants and animals living together. Some examples of forests include tropical rainforests and deciduous forests.

Other habitats:

• Desert has very few plants and animals because it is dry.
• Grassland mostly has grass and fewer trees.
• Marine refers to water habitats like oceans and seas.

Grouping plants and animals means putting them into categories based on their similarities and differences. This helps scientists and students understand the huge variety of plants and animals in nature more easily. For example:

• Plants can be grouped into herbs, shrubs, and trees.
• Animals can be grouped based on their movement, habitat, or food habits.

Adaptations are special features or behaviors that help plants and animals survive in their unique habitats. For example, camels store fat in their humps to live in deserts, and fish have fins and gills to swim and breathe underwater. These adaptations allow them to find food, stay safe, and live comfortably in their surroundings.

Plants with parallel venation, like grass and wheat, usually have a fibrous root system. This root system consists of many thin roots of similar size spreading out from the base of the stem. In contrast, plants with reticulate venation, like hibiscus, have a taproot system with one main root and smaller side roots branching off. This relationship between venation and root type is a common characteristic used to group plants.