Cells
Flowers
REPRODUCTION
Plants
Energy
100
Which organelle controls the activities of the cell?
Nucleus
100
What is the male part of a flower called?
Stamen
100
What is pollination?
The transfer of pollen from the anther to the stigma
100
What is the process by which plants make their own food?
Photosynthesis
100
What type of energy does a moving object have?
Kinetic Energy
200
Which part of the cell controls what enters and leaves the cell?
Cell Membrane
200
Which part of the flower receives pollen grains?
Stigma
200
Name TWO agents of pollination.
Wind / insects / birds / water
200
Name the FOUR things needed for photosynthesis.
Sunlight, water, carbon dioxide, chlorophyll
200
What type of energy is stored in food and batteries?
Chemical Energy
300
The jelly-like fluid that suspends organelles.
Cytoplasm
300
State the function of the petals.
To attract pollinators through bright colors and scent
300
What is the difference between self-pollination and cross-pollination?
Self-pollination occurs within the same plant; cross-pollination occurs between different plants of the same species.
300
What is the function of the cotyledon in a seed?
Stores food for the embryo
300
State the energy conversion in a flashlight.
Chemical → Electrical → Light
400
Why would a cell be unable to function properly if its mitochondria stop working?
Mitochondria release energy from food through respiration, and without them the cell would not have enough energy to carry out its activities.
400
State the TWO parts of the stamen and give their functions.
Anther – produces pollen grains
Filament – holds up the anther so pollen can be easily released and transferred
400
Which method of plant reproduction uses underground swollen stems to store food?
Tubers
400
State THREE conditions necessary for germination.
Water, oxygen, warmth
400
What form of energy is stored in a stretched rubber band?
Elastic Potential Energy
500
A student observes a cell with a cell wall, chloroplasts, and a large vacuole. Identify the type of cell and explain how each structure helps it survive.
What is a Plant cell
Cell wall supports and protects
Chloroplasts carry out photosynthesis
Large vacuole stores water and maintains shape
500
Explain how a pollen grain reaches the ovule during fertilisation.
After landing on the stigma, the pollen grain grows a pollen tube down the style into the ovary, where it joins the ovule for fertilisation.
500
A farmer wants to quickly grow many banana plants that are genetically identical. Explain why vegetative reproduction would be useful and name ONE method that could be used.
Vegetative reproduction produces identical plants quickly without seeds.
Method: runners / suckers / rhizomes
500
Explain why a seed kept in a freezer may not germinate even if water is added.
Seeds need warmth for germination. The low temperature slows or stops enzyme activity needed for growth.
500
Describe the energy changes that occur when water from a dam is used to produce electricity.
Potential Energy → Kinetic Energy → Mechanical Energy → Electrical Energy