MEDIUM
7th CBSE
IMPORTANT
Earn 100

Explain the process of movement of water with a flow chart.

Important Questions on Transportation in Animals and Plants

HARD
7th CBSE
IMPORTANT

Read the passage and answer the question:

Nutrients 

Nutrients are moved inside a plant to where they are most needed. For example, a plant will try to supply more nutrients to its younger leaves than its older ones. So when nutrients are mobile, the lack of nutrients is first visible on older leaves. However, not all nutrients are equally mobile. When a less mobile nutrient is lacking, the younger leaves suffer because the nutrient does not move up to them but stays lower in the older leaves. This phenomenon is helpful in determining what nutrients a plant may be lacking. Nutrients are broadly categorised as macronutrients and micronutrients. For normal growth process, plants require nine different macronutrients and seven different micronutrients. The macronutrients are carbon, hydrogen, oxygen, nitrogen, potassium, calcium, phosphorus, magnesium and sulphur. Nitrogen, phosphorus and potassium are mobile nutrients, while the others have varying degrees of mobility. The micronutrients are iron, chlorine, copper, manganese, zinc, molybdenum and boron. Plants require a few macronutrients in large amounts and several micronutrients in trace amounts. Most of these are obtained from the soil through the roots.

  1. Name the different types of nutrients. 
  2. Deficiency of mobile nutrients is first visible in which part of the plant body. 
  3. How does the mobility of nutrients affect the growth of plants? 
  4. Name any two macronutrients and micronutrients. 
  5. From where does the plant get its supply of nutrients? 
  6. Name any two mobile nutrients.
MEDIUM
7th CBSE
IMPORTANT
Where is a bicuspid valve found in the human heart? 
MEDIUM
7th CBSE
IMPORTANT
What is the shape of the human heart?
MEDIUM
7th CBSE
IMPORTANT
Why is oxygen important to blood and to the cells? 
HARD
7th CBSE
IMPORTANT
What happens to blood when it is pumped into the thin-walled blood vessels of the lungs? 
EASY
7th CBSE
IMPORTANT
Why is the colour of blood red? Do you think the colour of blood depends on the haemoglobin content? 
MEDIUM
7th CBSE
IMPORTANT
Why is it necessary for plants to transpire? How does transpiration help in the water cycle? 
EASY
7th CBSE
IMPORTANT
Which side of the heart has oxygen-rich blood and which side has carbon dioxide-rich blood?