oly class-7 science set-1 – The Smart Visions

Created on April 02, 2025

Olympiad Class-7 Science Set-1

NameEmailPhone NumberSelect Level / Class

1 / 25

What happens to oxygen produced during
photosynthesis?

A) It is stored in the leaves

B) It is released into the atmosphere

C) It is used in respiration

D) It is converted into carbon dioxide

2 / 25

Through which part of the plant does
carbon dioxide enter the leaves?

A) Root Hair

B) Petals

C) Cuticle

D) Stomata

3 / 25

Which type of nutrition do fungi use?

A) Parasitic

B) Autotrophic

C) Heterotrophic

D) Saprotrophic

4 / 25

Which part of the plant is mainly involved in the absorption of light energy?

A) Stem

B) Roots

C) Leaves

D) Flowers

5 / 25

In which part of the plant does
photosynthesis primarily occur?

A) Stem

B) Root

C) Leaf

D) Flower

6 / 25

Which of the following is not a product of
photosynthesis?

A) Oxygen

B) Water

C) Carbon dioxide

D) Carbohydrate

7 / 25

What is the green pigment called that is
essential for photosynthesis?

A) Carotene

B) Chlorophyll

C) Xanthophyll

D) Anthocyanin

8 / 25

Which of the following is a parasite?

A) Yeast

B) Mushroom

C) Cuscuta

D) Algae

9 / 25

What is the main reason plants need
nitrogen?

A) To store energy

B) To create a strong structure

C) To synthesize proteins

D) To make chlorophyll

10 / 25

What is the primary mode of nutrition in
plants?

A) Saprotrophic

B) Autotrophic

C) Parasitic

D) Heterotrophic

11 / 25

How do plants absorb minerals from the
soil?

A) Through seeds

B) Through leaves

C) Through flowers

D) Through roots

12 / 25

What is the process called where plants
make their food using sunlight?

A) Photosynthesis

B) Transpiration

C) Digestion

D) Respiration

13 / 25

What do guard cells do?

A) Regulate the opening and closing of stomata

B) Absorb minerals from the soil

C) Capture light energy

D) Protect the plant from insects

14 / 25

What is the main product of photosynthesis?

A) Glucose

B) Oxygen

C) Nitrogen

D) Carbon dioxide

15 / 25

What is nitrogen fixed by in the soil to

become usable for plants?

A) Fungi

B) Chlorophyll

C) Sunlight

D) Bacteria

16 / 25

What are the organisms called that
synthesize their food from inorganic
materials?

A) Heterotrophs

B) Saprotrophs

C) Parasites

D) Autotrophs

17 / 25

Why do farmers add manure to the soil?

A) To add nutrients to the soil

B) To prevent soil erosion

C) To increase water absorption

D) To remove weeds

18 / 25

What type of relationship do Rhizobium
bacteria and leguminous plants have?

A) Predatory

B) Parasitic

C) Saprotrophic

D) Symbiotic

19 / 25

What is transpiration?

A) Absorption of water by roots

B) Synthesis of food in leaves

C) Growth of roots in soil

D) Loss of water from leaves

20 / 25

What is the role of chlorophyll in
photosynthesis?

A) It Releases Oxygen

B) It Captures Light Energy

C) It Absorbs Carbon Dioxide

D) It Transports Water

21 / 25

Which gas is absorbed by plants during
photosynthesis?

A) Carbon dioxide

B) Oxygen

C) Nitrogen

D) Hydrogen

22 / 25

What are stomata?

A) Small openings on the surface of leaves

B) Water-absorbing root

C) Part of the flower

D) A type of fungus

23 / 25

What kind of plants are called saprotrophs?

A) Plants That Feed On Dead And Decaying Matter

B) Plants That Prepare Their Own Food

C) Plants That Feed Through Parasitic Means

D) Plants That Feed On Insects

24 / 25

Which mineral is essential for the synthesis
of proteins in plants?

A) Potassium

B) Nitrogen

C) Calcium

D) Phosphorus

25 / 25

In which part of the plant does
photosynthesis primarily occur?

A) Leaf

B) Flower

C) Root

D) Stem

Your score is