Download "Life Sciences" of B.Sc. (Hons.) Biotechnology Question Paper for B.Sc.1st Semester.

 B.Sc. (Hons.) Biotechnology

First Semester

BIOT-Sem-I-ITI-T (b): Life Sciences

Time allowed: 3 Hours Max. Marks: 67

NOTE: Attempt five questions in all, including Question No. IX (Unit-III) which is compulsory and selecting two questions each from Unit I-II.

UNIT-I

1. a) How do plants respond to changes in the environment?

b) Differentiate between Bryophytes and Pteridophytes.  

     

II. a) Discuss the role of Pholem in transport in plants.

b) Explain the structure of the male reproductive organ in angiosperms.

III. a) Explain the significance of the food chain in the ecosystem citing an example.

b) Discuss the biotic components and their role in the ecosystem.                                             

IV. a) What is the role and significance of Habitat in Ecosystem?

b) Discuss the different types of succession with example.  

UNIT – II

V. a) Discuss the components of the innate immune system.

b) Describe the mechanism of gas exchange in the lungs. 

VI. Explain the architecture of the Digestive system mentioning me role of each component.   

          

VII. a) Discuss the different sense organs and their role.

b) Draw a well-labeled diagram of neurons and discuss its role in the nervous system.

VIII. a) What are the hormones secreted by the Pituitary gland? Discuss their role. b) Draw a detailed and well-labeled diagram of the human male reproductive organ. 

UNIT -III

IX. Attempt the following:      

a) Define Angiosperms. 

b) Role of Bowman's capsule

 c) Two proteases secreted in the intestine

d) Animal behavior 

e) Food web 

f) Two proteins involved in muscle contraction

g) Role of Anther in plant reproduction