(English Medium) ICSE Class 10 - CISCE Important Questions for Biology

Given below is an experiment setup to demonstrate a particualr tropic movement in germinating seeds. Study the diagram and answer the questions that follow : 

What is meant by ‘Positive’ and ‘Negative’ tropic movements in plants? 

 Mention the exact location of the following : 
Thylakoids 

The diagram given below represents an experiment to prove the importance of a  factor in photosynthesis. Answer the questions that follow : 

 Name the factor studied in this experiment. 

The diagram given below represents an experiment to prove the importance of a  factor in photosynthesis. Answer the questions that follow :

 What will you observe in the experimental leaf after the starch test? 

The diagram given below represents an experiment to prove the importance of a  factor in photosynthesis. Answer the questions that follow :

 Explain the process of Photosynthesis.

The diagram given below represents an experiment to prove the importance of a  factor in photosynthesis. Answer the questions that follow :
 Give a balanced chemical equation to represent the process of photosynthesis. 

 The diagram given below represents an experiment to prove the importance of a  factor in photosynthesis. Answer the questions that follow : 

 Draw a neat, labelled diagram of an experimental steup to show that oxygen is released during photosynthesis

 State the main functions of the following: 
Medulla Oblongata 

 State the main functions of the following:
Cytokinins

Draw a neat and well-labeled diagram of the apparatus you would set up to show that oxygen is given out during photosynthesis.

Arrange and rewrite the terms in the group in the correct order to be in a logical sequence beginning with the term that is underlined:

Snake, Rabbit, Cabbage, Hawk.

A potted plant with variegated leafes was kept in dark for 24 hours and then placed in bright sunlight. Answer the following questions.

1. Which aspect of photosynthesis is being tested in the above diagram?
2. Why was the plant kept in the dark for 24 hours?
3. After the starch test, what will be the colour of the yellow and green parts of the leaf? Give reasons to support your answer.

Which one of the following helps in the opening of stomata?

Study the diagram given below and fill in the blanks with suitable words:

In order to prove that carbon dioxide is necessary for

(a) ______, a potted plant is placed in dark for 48 hours to (b) ______ the leaves. A part of a leaf is inserted into a conical flask containing potassium hydroxide solution. This is to absorb (c) ______ from the flask. The plant is then placed in sunlight for a few hours. The experimental leaf is tested for starch. The part of the leaf that was inside the conical flask turns (d) ______, whereas the part of the left outside turns (e) ______ in colour.

Expand the abbreviation - NADP.

Assertion (A): All food chains begin with herbivores.

Reason (R): Green plants are heterotrophs.

Sam observed a slide containing the lower epidermis of a leaf under a microscope. A number of tiny openings between the epidermal cells were present as shown below in the diagram:

What are these tiny openings called?

Sam observed a slide containing the lower epidermis of a leaf under a microscope. A number of tiny openings between the epidermal cells were present as shown below in the diagram:

Name the cells that regulate the opening and closing of the structures.

Sam observed a slide containing the lower epidermis of a leaf under a microscope. A number of tiny openings between the epidermal cells were present as shown below in the diagram:

Which ion is responsible for the opening and closing of the openings?

Mention the significance of the following mineral:

Magnesium for green plants.