On a maize plot in Mashonaland, which plant part mainly absorbs water and dissolved mineral salts from the soil?
Crops Plants Animals
Question · Easy
The houseplant does both
Short
What is the main job of the green pigment chlorophyll in a rape leaf from a school garden?
During photosynthesis, a green maize plant takes in carbon dioxide and water. Which useful gas does it release into the air?
Maize is Zimbabwe's main staple crop. Which group of crops does maize belong to?
A family in Masvingo keeps Mashona cattle. Which set lists useful products or services those cattle can provide?
A teacher asks which soil is usually best for growing most garden vegetables. Which answer is correct?
Which set of things does a green crop plant need in order to grow well?
What is the main function of a flower on a groundnut or bean plant?
A homestead in Gweru keeps village chickens. Which products do the chickens mainly provide?
Which three things must a green leaf have for photosynthesis to take place?
Question · Medium
Why can planting groundnuts help a tired maize field more than planting maize again and again?
A farmer in Matabeleland has very sandy soil. What is the main problem for rain-fed maize on that soil?
After a heavy January storm, a clay field near Mutare holds water on the surface for days. Why is this a problem for young maize?
What is pollination in a flowering bean plant?
Which three conditions do most crop seeds need before they can germinate?
A school makes compost from vegetable peelings, dry grass and a little cattle manure. What is compost mainly used for?
Why should learners weed a maize plot instead of leaving black-jack and couch grass to grow?
In the food chain grass → goat → human, which organisms are the producers?
Rains are late in October, but a family still wants to water tomato seedlings. Which water source is usually the most reliable on many Zimbabwe homesteads?
A msasa tree has light, winged seeds. How are those seeds most likely to be dispersed?
Tiny pores on the underside of a maize leaf allow gases to enter and leave. What are these pores called?
Water absorbed by maize roots reaches the leaves by travelling through which path?
In a drought-prone part of Matabeleland, which cereal is usually more drought-tolerant than maize?
How does well-rotted cattle manure help a vegetable garden?
On a hot afternoon, a maize plant loses water vapour through its leaf pores. What is this process called?
Question · Hard
A farmer grows maize one year and groundnuts the next in the same field. What is the main scientific reason for this crop rotation?
A school garden in Gweru has 6 rows of maize with 8 plants in each row. Fall armyworms destroy 3 plants. How many maize plants remain?
Learners put one bean seedling in a dark cupboard and an identical seedling on a sunny windowsill. Both are watered. After a week the cupboard plant is pale and weak. What is the best reason?
Why does a layer of dry grass mulch around maize plants help during a hot, dry October spell?
A watering can holds 8 litres. Four rape beds each need 6 litres. How many full cans must be filled to water all four beds?
Ice in a cooler box, water in a cup, and steam from a boiling kettle are the same substance in which three states?
Materials Energy Physical Science
Ice left in a sunny classroom becomes liquid water. What is this change of state called?
A solar lamp on a rural homestead stores energy during the day. Where does that energy come from?
Which everyday material is a good conductor of electricity?
Why are the handles of many pliers and the covering on electric cables made of rubber or plastic?
A bar magnet is dipped into a tray of mixed pins. Which pins are attracted?
Many rural kitchens in Zimbabwe still cook sadza on a wood fire. What kind of energy resource is the dry firewood in that fire?
When water in a kettle is heated strongly at ordinary air pressure, it changes into which state?
Wet school shirts dry on a line on a windy Harare afternoon. Which process turns the liquid water into water vapour?
A cold glass of maheu taken from a fridge soon has water drops on the outside. Where do those drops mainly come from?
A metal cooking stick and a dry wooden cooking stick are left in a pot of hot sadza for the same time. Why does the metal stick feel much hotter at the handle?
Learners build a simple solar cooker from a cardboard box. Which inner surface will absorb heat from the sun most strongly?
Why is it hard to walk on a smooth, wet classroom floor, but easier on a dry, rough path?
Two bar magnets are brought near each other. Which pair of poles will attract?
A teacher taps a metal desk at one end. Learners hear the sound more clearly through the desk than through the air. Why?
A learner stands in the sun and a sharp shadow of her body falls on the playground. What does this show about light?
A solar panel on a classroom roof charges a battery that later lights an LED. Which energy change happens first in the panel?
Loading more…