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

Explain Innate immunity.

Name the following:

The number of chromosomes present in a nerve cell of a human being.

A strong chemical substance which is used on objects and surfaces in our surroundings to kill germs:

Complete the following paragraph by filling in the blank (1) to (5) with appropriate words:

To test a leaf for starch, the leaf is boiled in water to (1) _________.  It is then boiled in Methylated spirit to (2) ________. The leaf is dipped in warm water to soften it. It is placed in a petri dish, and (3) _____ solution is added. The region of the leaf which contains starch, turns (4) ________and the region while does not contain starch, turns (5) __________.

Correct the following statements by changing the underlined words:

The normal pale yellow colour of the urine is due to the presence of the pigment Melanin.

Blood in the renal artery or renal vein (Which one has more urea ?)

Choose the ODD one out from the following terms given and name the CATEGORY to which the others belong

Centrosome.Cell wall, Cell membrane, Large vacuoles

Give appropriate biological or technical terms for the following :

The condition in which a pair of chromosomes carries similar alleles of a particular character.

The diagram given below is that of a structure present in a human kidney.

Study the same and answer the questions that follow:

1) Name the structure represented in the diagram

2) What is the liquid entering part ‘1’ called?

Name two substances present in this liquid that are reabsorbed in the tubule.

3) What is the fluid that comes to part ‘2’ called?

Name the main nitrogenous waste in it.

4) Mention the three main steps involved in the formation of the fluid mentioned in (iii) above

5) Name the substance which may be present in the fluid in part ‘2’ if a person suffers from Diabetes mellitus.

Differentiate between the following pairs on the basis of what is indicated in the brackets.

Leaf and Liver [form in which glucose is stored]

Differentiate between the following pair on the basis of what is indicated in the bracket.

Ureter and Urethra [function]

Give biological explanations for Plants growing in fertilized soil are often found to wilt if the soil is not adequately watered.

Name the structural and functional unit of the nervous system.

How does transpiration help in the uptake of water from the soil?

Define the following: 

Neuron  

The Chromatin material is formed forms of ______.

The term “chromosomes” literally means ______.

What is the difference between chromatin fibre and chromosome? 

Correct the following statement if there is any mistake:

Genes are specific sequences of bases on a chromosome .

Correct the following statement if there is any mistake: 

If there are 46 chromosomes in a cell, there will be 23 chromatin fibres inside the nucleus during interphase.