एक तद्भव शब्द

Which one among the following statements is correct? 

What is the scientific study of animal behavior known as?

Study of Beauty is called

What does histology study?

In genetics, what does the term 'phenotype' refer to?

Two Strands of DNA are held together by

Emphysema primarily affects which organ of the body?

Which of the following is a female sex hormone?

Malaria is caused by 

Rinderpest, also known as cattle plague, is caused by which type of pathogen?