IMO Practice Test: Kinds of Plants | Class 2 Science

Question 1 of 6 hard

Why do tiny herbs often live only a few months while trees live for years?

Herbs are bigger

Herbs are made of metal

Trees never grow

Herbs have soft stems; trees have strong woody trunks

Explanation: Woody trees last for years; soft herbs are short-lived.

Question 2 of 6 hard

Why do gardeners add manure or compost to soil?

It removes water

It dries the soil

It blocks sunlight

It feeds the plant with nutrients

Explanation: Manure adds nutrients that help plants grow.

Question 3 of 6 hard

A world with no plants would have no…

Sand

Rocks

Food or fresh oxygen for us

Water in the sea

Explanation: Without plants there would be no food and little oxygen.

Question 4 of 6 hard

What is the main way we tell trees, shrubs and herbs apart?

The day they grow

Their colour only

Their smell only

Their size and how woody the stem is

Explanation: We sort them by size and stem type.

Question 5 of 6 medium

Why does a climber need a stick or wall?

To hide

It likes the colour

Its weak stem needs support to rise up

It does not need one

Explanation: A climber's weak stem needs support to climb.

Question 6 of 6 hard

A pea plant climbs using tiny curling threads called…

Petals

Roots

Tendrils

Trunks

Explanation: Tendrils help climbers hold on and rise.

IMO Practice Test — Kinds of Plants