Grade 7 Natural Sciences - Practice Exam Notes

Animal Kingdom

Fill in the Blanks:

• Hydrosphere: Total water on Earth.
• Nectar: Sugary liquid attracting pollinators.
• Fertilisation: Fusion of male and female sex cells.
• Classification: Grouping organisms by shared features.
• Biodiversity: Wide variety of living organisms.

True or False:

• Protists can make their own food: True
• Fungi are capable of movement: False
• Animalia give birth or lay eggs: True
• Monocotyledons usually have woody stems: False
• Vertebrates have a backbone: True

Multiple Choice:

• Lion group: C) Mammals
• Not a requirement for life: C) Clothing
• Flowers relying on animals for pollen: B) Agent pollination
• Part producing pollen: C) Stamen
• Mostly single-celled organisms, plant or animal-like: C) Protista

Life on Earth

African Elephant Case Study:

• Five life processes: breathing, feeding, moving, sensing, reproducing.
• Five requirements for life: (Not explicitly stated, needs to be inferred from context)

Kingdom Classification:

• Lion Classification:
  • Kingdom: Animalia
  • Phylum: Chordata
  • Class: Mammalia
  • Order: Carnivora

Vertebrates and Mammals:

• Three classes of vertebrates: (Not stated, needs to be inferred, e.g., Fish, Amphibians, Reptiles.)
• Two unique features of mammals: (Not stated, needs to be inferred, e.g., mammary glands, hair/fur).

Plants:

• Flower Parts: (Diagram labeling: petal, stigma, stamen, ovary, anther)
• Monocots vs. Dicots:
  • Monocot roots are usually fibrous, while dicot roots are taproots.
  • Monocot leaves have parallel veins; dicot leaves have branched veins.
  • Monocot stems are usually herbaceous, while dicot stems are often woody.

Processes in Plants

Pollination:

• Brightly colored petals: to attract insects for pollination.
• Two methods of pollination: wind, water
• Importance of pollination: for plant survival and reproduction.

Fertilisation Process:

• Fertilization Steps Sequence: A, B, C, D, E, F, G, H, I, J

Seed Dispersal:

• Exploding pods: a method of seed dispersal.
• Wind dispersal: (Paragraph explaining how wind aids in seed dispersal, e.g., lightweight seeds, structures to catch wind).
• Two fruit types and dispersal: (Requires naming two fruit types and their dispersal mechanisms, e.g., fleshy fruits dispersed by animals, fruits with hooks attaching to animals).