Read the following statements about diseases.
i. They are caused by germs.
ii. They are caused due to lack of nutrients in our diet.
iii. They can be passed on to another person through contact.
iv. They can be prevented by taking a balanced diet.
Q. Which pair of statements best describe a deficiency disease?
Calcium, iron, potassium, iodine and common salt are examples of:
Mosquitoes live on blood that they suck from humans and other animals. Mosquitoes and flies both come from the insect group. To which of the following categories do the mosquitoes and flies belong?
Which vitamin is synthesised by bacteria in the intestine?
Green plants are known as producers. They prepare more food than they need. The extra food is stored in different parts of the plant. Identify the parts of the plant from which the following food items (W, X, Y and Z) are obtained and select the correct option.
The diagram below shows a simple food web.Which animal is classified as an omnivore?
It is a form of malnutrition in which nutrients are oversupplied relative to the amounts required for normal growth, development and metabolism. I. What is this condition called?
II.This condition will lead to?
Some beetles break down the remains of dead animals. Some mushrooms breakdown the remains of dead trees. How do these actions most benefit plants?
The diagram below shows a simple food chain.
Which of the following animals might compete with the coyote in this food chain?
Which of the following food turns blue-black with iodine solution?