Gujarat Board Class 7 Science — Practice Quiz

Which of the following is the food factory of a plant?

What is the product of photosynthesis that plants store as food?

Cuscuta (Amarbel) is a plant that grows on other plants and takes food from them. What type of nutrition does it show?

In the stomach, hydrochloric acid (HCl) is produced. What is one important role of this acid?

What is the process called when digested food is taken into the cells of the body and used to make complex substances like proteins?

Cows and buffaloes can digest grass easily but humans cannot. Which carbohydrate is present in grass that humans cannot digest?

A crystal of potassium permanganate is placed at the bottom of a beaker of water, and the beaker is heated from below. Coloured streaks rise upward and then move sideways and downward. What does this pattern BEST demonstrate?

During the daytime in a coastal area, the wind blows from the sea towards the land. Which scientific explanation CORRECTLY accounts for this sea breeze?

Heat from the Sun reaches the Earth through empty space (vacuum). Which mode of heat transfer explains this, and why cannot the other two modes work here?