Question
Why do plants store food as starch instead of glucose?
✓
Answer
Starch is insoluble in water, which prevents it from disrupting the water balance within cells. If glucose were stored, it would dissolve and potentially cause osmotic stress.Starch is a large, compact molecule, allowing plants to store a significant amount of energy in a small space. Glucose molecules would take up more space and be less efficient for storage.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Give an example of a chemical reaction for each of the following situation: A change in colour is observed.
Explain how we can find wind direction at a given place.
Write short notes on heating effects of electric current.
Describe how xylem and phloem function differently.
Four different types of fibres are given to us. Out of these, two fibres $(1$ and $2)$ are obtained from plants and other two $(3$ and $4)$ fibres are obtained from animals. Fibre
$(1)$ is used in filling quilts and the yarn made of fibre
$(2)$ is used in making gunny bags, The yarn made from fibre
$(3)$ is used for knitting sweaters and yarn of fibre
$(4)$ is used for weaving saries. Name the four given fibres marked $1,2, 3$ and $4$.
→→$(1)$ is used in filling quilts and the yarn made of fibre
$(2)$ is used in making gunny bags, The yarn made from fibre
$(3)$ is used for knitting sweaters and yarn of fibre
$(4)$ is used for weaving saries. Name the four given fibres marked $1,2, 3$ and $4$.
Vani believes that ‘carbon dioxide is essential for photosynthesis’. She puts an experimental set-up, as shown in Fig, to collect evidence to support or reject her idea.
Fig. A potted plant with sufficient water is placed under the prescribed conditions.
(a) Sunlight with carbon dioxide
(b) Sunlight without carbon dioxide
(c) Dark with
(d) Dark without carbon dioxide carbon dioxide
Answer the following questions.
(i) In which plant(s) in the above set-up(s) will starch be formed?
(ii) In which plant(s) in the above set-up(s) will starch not be formed?
(iii) In which plant(s) in the above set-up(s) will oxygen be generated?
(iv) In which plant(s) in the above set-up(s) will oxygen not be generated?
Fig. A potted plant with sufficient water is placed under the prescribed conditions.
(a) Sunlight with carbon dioxide
(b) Sunlight without carbon dioxide
(c) Dark with
(d) Dark without carbon dioxide carbon dioxide
Answer the following questions.
(i) In which plant(s) in the above set-up(s) will starch be formed?
(ii) In which plant(s) in the above set-up(s) will starch not be formed?
(iii) In which plant(s) in the above set-up(s) will oxygen be generated?
(iv) In which plant(s) in the above set-up(s) will oxygen not be generated?
Ramesh, an 11 year old boy, developed a few pimples on his face. His mother told him that this is because of ongoing biological changes in his body.
(i) What could be the possible reasons for the development of these pimples on his face?
(ii) What can he do to get some relief from these pimples?
(i) What could be the possible reasons for the development of these pimples on his face?
(ii) What can he do to get some relief from these pimples?
What are the two terminals of an electric cell?
Observe the diagram showing the occurrence of sea breeze.
(a) Draw the diagram showing the occurrence of land breeze. Label the direction of air movement on the diagram.
(b) Explain why the direction of air flow changes during day and night near coastal areas.
(a) Draw the diagram showing the occurrence of land breeze. Label the direction of air movement on the diagram.
(b) Explain why the direction of air flow changes during day and night near coastal areas.