How would you test the presence of starch in leaves?
Name the states of India through which the tropic of cancer passes.
Write 10 lines on the usefulness of microorganisms in our lives.
Describe the process of Photosynthesis.
How are water and minerals transported in plants?
Prove with the help of an experiment that carbon dioxide is necessary for photosynthesis.
Write two different ways in which glucose is oxidized to provide energy in the human body. Write the products formed in each case.
Write the difference between weather and climate.
Name the difference types of teeth and their function
Show with the help of a sketch that the plants are the ultimate source of food.
Write the difference between parasites and saprotroph?
Why is a cell membrane called a selectively permeable membrane?
- It is permeable only during certain stages of cell division.
- It allows only selective molecules to pass through it.
- It allows only water to pass.
- It is made up of lipids.
What are the factors that affect photosynthesis?
How does an Amoeba obtain its food?
Prove that chlorophyll is necessary for photosynthesis.
Which is the national vegetable of India?
What are weeds? How can we control them?
What are unisexual and bisexual flowers? Give two examples of each.
What are the functions of bile juice?
What are antibiotics? What precautions must be taken while taking antibiotics
What are the characteristics of a virus?
Explain the nitrogen cycle with the help of a diagram.
Name the largest cell and smallest cell?
What is the function of large intestine ?
How are the alveoli designed to maximize the exchange of gases?
The correct sequence of air passage during inhalation?
What are the important features of arid soil?
Write ten examples of diffusion in everyday life.
Some plants have deep red, violet or brown color leaves. Can they perform photosynthesis?