8th & 9th Year / Science Review

In a garden, Julie is curious about how plants get their nutrients. She wonders, which plant structure absorbs water and minerals from the soil?

• Stem

• Root

• Leaf

• Flower

Answer explanation

Roots anchor plants and absorb water and minerals essential for survival.

In a school garden, Anna noticed that the leaves of the plants were crucial for their growth. She wondered what the main function of a leaf is:

• Absorbing water

• Photosynthesis

• Storing food

• Protecting the seed

Answer explanation

Leaves contain chlorophyll, which captures sunlight to produce food via photosynthesis.

During a sunny day in the school garden, Anna noticed that the plants were thriving and releasing bubbles. She wondered, which process allows these plants to release oxygen into the atmosphere?

• Respiration

• Photosynthesis

• Transpiration

• Germination

Answer explanation

During photosynthesis, plants take in CO₂ and release O₂ as a by-product.

During a nature walk, Anna and Mia came across different types of plants. Anna pointed out a group of plants that produces seeds without flowers, while Mia was curious about the other types. Can you help them identify which group of plants Anna is referring to?

• Algae

• Bryophytes

• Gymnosperms

• Angiosperms

Answer explanation

Gymnosperms (e.g., pines) produce seeds in cones, not flowers.

During a school project, Adam and Alexandra learned about the importance of plant protection. They discovered that plants play a crucial role in our lives. Why is plant protection important for humans?

• They provide only shade.

• They supply oxygen, food, and raw materials.

• They prevent rainfall.

• They are used only for decoration.

Answer explanation

Plants are vital for life support systems: oxygen, food, medicines, building materials, etc.

During a biology class, Angella and Anna were discussing different types of animals. Angella asked, "Which of the following is an invertebrate?" Anna replied with a list of animals: a frog, an earthworm, an eagle, and a shark. What did Angella mean by invertebrate?

• Frog

• Earthworm

• Eagle

• Shark

Answer explanation

Invertebrates lack a backbone; earthworms belong to this group.

During a visit to the aquarium, Mia and Anna were fascinated by the different classes of animals they saw. While observing the various fish, Mia asked, 'Which class of animals includes sharks?'

• Osteichthyes

• Amphibians

• Chondrichthyes

• Reptiles

Answer explanation

Sharks are cartilaginous fish (Chondrichthyes).

During a nature field trip, Julie and her friends learned about different types of animals. They discovered that amphibians differ from reptiles mainly because they:

• Lay eggs on land

• Have moist skin and can live in water and on land

• Have dry scales

• Can fly

Answer explanation

Amphibians (frogs, salamanders) breathe through skin and depend on water for reproduction.

During a nature walk, Eliška spotted several birds in the park. She wondered, which of these birds is flightless?

• Penguin

• Falcon

• Owl

• Swan

Answer explanation

Penguins are adapted to swimming rather than flying.

What behaviour is typical of animals living in herds or packs?

• Solitary hunting
• Cooperation for protection and food gathering
• Always migrating alone
• Hibernating together underground

Answer explanation

Herding and pack behaviour help survival through cooperation.