(English Medium) ICSE Class 10 - CISCE Question Bank Solutions

Given below is an example of a certain structure and its special functional activity:

chloroplasts and photosynthesis

In a similar way, write the functional activity against the following:

Xylem and ______

Briefly explain how the rate of transpiration is affected by:

Humidity of the atmosphere

The figure given below represents an experimental setup with a weighing machine to demonstrate a particular process in plants. The experimental setup was placed in bright sunlight. Study the diagram and answer the following questions.

Define the above mentioned process. 

The figure given below represents an experimental setup with a weighing machine to demonstrate a particular process in plants. The experimental setup was placed in bright sunlight. Study the diagram and answer the following questions.

When the weight of the test tubes A and B is taken before and after the experiment, what change is observed? Justify. 

The figure given below represents an experimental setup with a weighing machine to demonstrate a particular process in plants.  The experimental setup was placed in bright sunlight. Study the diagram and answer the following questions.

What is the purpose of keeping the test tube B in the experimental setup? 

Name the following:

The source of carbon dioxide for aquatic plants. 

Mention one difference between the following on the basis of what is given in bracket.

Chlorophyll and chloroplast (part of plant cell)

The chemical substance used to test the presence of starch in the cell of a leaf is ______.

Are the following statement true or false? Give a reason in support of your answer.

Destarching of the leaves of a potted plant can occur only at night.

Why is it not possible to demonstrate respiration in a green plant kept in sunlight?

How would you demonstrate that green plants release oxygen when exposed to light?

How do non-green plants such as fungi and bacteria obtain their nourishment?

All life owes its existence to chlorophyll. Give reason.

Complete the following by filling the blanks 1 to 5 with appropriate words/terms/phrases:

To test the leaf for starch, the leaf is boiled in water to ______ (1). It is next boiled in methylated spirit to ______ (2). The leaf is placed in warm water to soften it. It is then placed in a dish and ______ (3) solution is added. The region which contains starch, turns ______ (4) and the region which does not contain starch, turns ______ (5)

Photosynthesis in green plants is directly and indirectly dependent on so many plant structures.

Explain briefly the role of the following structures in this process Guard cells.

Photosynthesis in green plants is directly and indirectly dependent on so many plant structures. 

Explain briefly the role of the following structures in this process is Cuticle.

Photosynthesis in green plants is directly and indirectly dependent on so many plant structures. 

Explain briefly the role of the following structures in this process is Xylem tissue in the leaf veins

Given below is a schematic diagram to illustrate some aspects of photosynthesis.

1. Fill up the gaps, in blank spaces (1-4), by writing the names of the correct items.
2. What phenomenon do the thick arrows A and B indicate?

Given below is the representation of a certain phenomenon in nature. With four organisms 1-4.

1. Name the phenomenon represented.
2. Name any one organism that could be shown at No. 5.
3. Name the biological process which was the starting point of the whole chain.
4. Name one natural element which all the organisms 2-4 and even 5 are getting from No. 1 for their survival.

Given below is the representation of a certain phenomenon in nature. With four organisms 1-4.

Name any one organism that could be shown at No .5