Q1. Fill in the blanks.
In photosynthesis solar energy is captured
by the pigment called chlorophyll.
During photosynthesis plants take in carbon
dioxide and release oxygen.
in plant take in carbon dioxide from the air for photosynthesis.
are the products of photosynthesis.
The food synthesized by the plants is
stored as starch. True
Plants take carbon dioxide from the
atmosphere mainly through their leaves. True
Solar energy is converted into electrical
energy during photosynthesis. False
Carbon dioxide is released during
The starch is also a carbohydrate. True
Q3. Name a parasitic plant with yellow, slender and tubular
Q4. Give one example of parasite.
Q5. Name one plant that traps and feeds on insects.
Q6. Name a plant that has both autotrophic and heterotrophic
mode of nutrition.
Q7. What are fluffy umbrella-like patches growing on rotting
wood during the rainy season called?
These organisms are called fungi.
Q8. How can cells be seen?
Most type of cells can be seen only under the microscope.
Q9. Where is nucleus located in a cell?
In most of the cell, nucleus is centrally located.
Q10. What are carbohydrates made up of?
carbohydrates are made of carbon, hydrogen and oxygen.
Q11. From where do plants get raw materials to prepare their
get raw materials to prepare their food from their surroundings.
Q12. Where does the synthesis of food in a plant usually take
The synthesis of food in plants occurs in leaves.
Q13. What is the ultimate source of energy for all living
Sun is the ultimate source of energy for all living organisms.
Q14. Write an equation that represents the process
Q15. What are the components of food?
Carbohydrates, proteins, fats, vitamins and minerals are components of food.
Q16. What are insectivorous plants?
Insect-eating plants such as pitcher plant are called insectivorous plants.
Q17. What do you mean by nutrition?
Ans. Nutrition is the mode
of taking food by an organism and its utilization by the body.
Q18. Why photosynthesis is named so?
Since the synthesis of food occurs in the presence of sunlight, it is called photosynthesis
(Photo: light; synthesis: to combine).
Q19. What are heterotrophs?
Animals and most other organisms take in ready-made food prepared by the
plants. They are called heterotrophs (heteros = other).
Q20. What are stomata?
Tiny pores are present on the surface of the leaves which helps in exchange of
gases. Such pores are called stomata.
Q21. What are called autotrophs?
Organisms able to make food themselves from simple substances are called
Q22. What is heterotrophic nutrition?
Heterotrophic nutrition is the mode of nutrition in which organisms depend upon
other organisms to survive.