Flash News: Dr. William Phillips, an Office of Naval Research (ONR) funded Nobel Prize-winning physicist, delivered the final lecture at ONR's spring distinguished lecture series May 19. Phillips' compelling presentation, titled "Time, Einstein and the Coolest Stuff," highlighted the importance of basic research and ONR's legacy of support for innovative scientists.
8th Curriculum
 
  Biology
 
Chapter 10:
Reaching the Age of Adolescence
1 mark Questions
1. Internal fertilization occurs
 

(i) in female body.
(ii) outside female body.
(iii) in male body.
(iv) outside male body.

2. A tadpole develops into an adult frog by the process of
 

(i) fertilization
(ii) metamorphosis
(iii) embedding
(iv) budding

3.

The number of nuclei present in a zygote is

 

(i) none
(ii) one
(iii) two
(iv) four

   
4.

Indicate whether the following statements are True (T) or False (F).

   
   
 

 

2 marks Questions
   
   
   
   
   
   
   
 

 

3 marks Questions.
1. What is the term used for secretions of endocrine glands responsible for changes taking place in the body?
2. Define adolescence.
3. What is menstruation? Explain.
4. List changes in the body that take place at puberty.
5.

Prepare a table having two columns depicting names of endocrine glands and hormones secreted by them.

6.

What are sex hormones? Why are they named so? State their function.

7.

Write notes on − 2 marks each

 

(a) Adam’s apple.
(b) Secondary sexual characters.
(c) Sex determination in the unborn baby.

   
   
   
   
5 marks Questions