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

Which of the following is not an endocrine gland?

Choose the odd one out from series and write the category of the remaining terms:

Define the following term:

Endocrine system

Distinguish between the following pair:

Enzymes and hormones (mode of transport and target organ)

The immunity acquired by providing readymade antibodies from outside for treating certain infectious diseases.

Give scientific reasons: Injury to medulla oblongata leads to death.

BCG vaccine is effective against
A. Cholera
B. Mumps
C. Tuberculosis
D. Measles

the biological/technical terms for The process by which white blood cells engulf bacteria

Differentiate between the Vasopressin and Insulin (Deficiency disorder)

Give scientific reasons : A person walks clumsily after consuming alcohol

A potted plant with variegated leaves was taken in order to prove a factor necessary for photosynthesis. The potted plant was kept in the dark for 24 hours and then placed in bright sunlight for a few hours. Observe the diagrams and answer the questions:

1. What aspect of photosynthesis is being tested in the above diagram?
2. Represent the process of photosynthesis in the form of a balanced equation.
3. Why was the plant kept in the dark before beginning the experiment?
4. What will be the result of the starch test performed on Leaf ‘A’ shown in the diagram? Give an example of a plant with variegated leaves
5. Draw a neat labelled diagram of a chloroplast.

Name the repeating components of each DNA strand lengthwise.

Name the complex consisting of DNA strand and a core of histones.

Name the type of bond which joins the complementary nitrogenous bases. 

Name the three components of a nucleotide.

Correct the following statement if there is any mistake: 

A nucleotide is composed of a sulphate, a sugar (pentose) and a nitrogenous base .

Correct the following statement if there is any mistake:

Nucleosomes are groups of cysteine molecules surrounded by DNA strands.

Cow was the first domesticated animal.

What is chromatin?

Fill in the blank:
Chromatin fibre is made up of DNA and ______.