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

Name the following:

Two types of reflexes.

Write important role/roles of the following:

S.A.N.

Write the exact location of the following:

Pacemaker

Mention whether the following statement is (T) Or (F). Give reason in support of your answer.  

Crossing over between chromatids can occur only between homologous chromosomes. 

The diagram given below represents a certain phenomenon which occurs during meiosis. Name and explain the phenomenon by using the terms homologous chromosomes, chromatids, crossing over. 

Choose the correct answer:
Crossing over is a feature of ______________

Give reason:

The children of the same parents, howsoever similar, are different from each other in certain aspects.

Choose the odd one in each of the following: 

Oestrogen; progesterone; testosterone; prolactin. 

What are the secondary sexual characters in the human male? 

Define the following term:

Puberty

List any two changes each in human male and female, which occur during puberty. 

What is the significance of the testes being located in scrotal sacs outside the abdomen. Can there be any abnormal situation regarding their locations? If so, what is that and what is the harm caused due to it? 

Is it correct to say that the testes produce testosterone. Discuss?

Choose the correct answer:
Secondary sexual characters appear in __________

Give the functions of the following:
Ovary 

Explain the term Secondary sexual characters.

From where the following nerves arise.

Auditory nerve

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:

Receptor, Response, Effector, Spinal Cord.

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

Effector, Receptor, Motor neuron, Sensory neuron.

Name the type of nerve which has the fibres of both sensory and motor neurons.