Science Olympiad practice tests for Class 3 Chapter Plants and Animals
Multiple Choice Questions (MCQs): Practice Test
Questions in the Quiz
Which of the following animals swallows its food?
- Rabbit
- Frog
- Rat
Answer: c) Frog
What is the main function of leaves in a plant?
- Storing food for the plant
- Producing new branches in adult plants
- Making food for the plant through photosynthesis
Answer: d) Making food for the plant through photosynthesis
Which part of a radish do we eat, and what type of structure is it?
- Leaves – Modified into spines
- Roots – Swollen
- Stems – Underground
Answer: b) Roots – Swollen
A food chain always starts with:
- Carnivores
- Herbivores
- Plants
Answer: d) Plants
What is the purpose of stomata in leaves?
- Absorbing sunlight
- Exchanging gases
- Storing food
Answer: b) Exchanging gases
How do grasshoppers breathe, and what happened to the grasshopper in a glass tank without air?
- They breathe through their skin, and it survived.
- They breathe through their lungs, and it died.
- They breathe through spiracles, and it died.
Answer: d) They breathe through spiracles, and it died.
What type of animals are cow, buffalo, and giraffe in terms of their diet?
- Omnivores
- Herbivores
- Carnivores
Answer: b) Herbivores
Why are leaves often referred to as the “kitchen of the plant”?
- Because they contain a green pigment called chlorophyll.
- Because they store food for the plant.
- Because they produce new branches in adult plants.
- Because they help in making food through photosynthesis.
Answer: d) Because they help in making food through photosynthesis.
What do plants do with the help of chlorophyll in their leaves?
- Absorb water from the soil.
- Produce flowers and fruits.
- Make food using carbon dioxide and water in the presence of sunlight.
- Release oxygen into the atmosphere.
Answer: c) Make food using carbon dioxide and water in the presence of sunlight.
How do lions and hyenas obtain their food?
- They swallow their food whole.
- They chew cud.
- They tear and chew flesh.
- They suck nectar from flowers.
Answer: c) They tear and chew flesh.
What is the primary purpose of a food chain?
- To show the sequence of events in an ecosystem.
- To demonstrate how different living organisms interact with each other.
- To illustrate how energy flows through various organisms.
- To explain the roles of herbivores, carnivores, and omnivores in nature.
Answer: c) To illustrate how energy flows through various organisms.
What happens when an earthworm swallows soil?
- It stores the soil in its body for future use.
- It uses the soil to build a protective barrier around itself.
- It extracts nutrients from the soil and expels the rest.
- It converts the soil into energy through photosynthesis.
Answer: c) It extracts nutrients from the soil and expels the rest.
What do grasshoppers require for their survival?
- Sunlight
- Water
- Air
- Soil
Answer: c) Air
