BIOLOGY PRACTICE PAPER IX

The role of ribosome is:

• a) site of protein synthesis

• b) site of respiration

• c)site of photosynthesis

• d) site of packaging protein

Lotus stem float in water due to the presence of:

• a) Aerenchyma

• b) Parenchyma

• c) Collenchyma

• d) Sclerenchyma

Assertion (A): Xylem is a vascular tissue.

Reason

(R): Water and minerals are transported in the plant through xylem.

• Both A and R are true, and R is the correct explanation of A.

• Both A and R are true, and R is not the correct explanation of A.

• A is true but R is false.

• A is false but R is true.

Assertion (A): Soyabean is a kharif crop.

Reason (R): crop grown in rainy season are called rabi crop.

• Both A and R are true, and R is the correct explanation of A.

• Both A and R are true, and R is not the correct explanation of A.

• A is true but R is false.

• A is false but R is true.

Write name of any two each unicellular and multicellular organism.

Blood is very important connective tissue. Why?

List four water resources available that are used for irrigation purpose in India.

Name any three epithelial tissue and their location in animals.

List out the various desirable traits for which the cross- breeding programmes of Indian and foreign breeds in poultry farming are developed.

a) Plastids are present only in the plant. Which types of plastids are present in : i. Petals; ii. Leaves; iii. fruit pulp b) What happen if chloroplast is removed from the plant. Explain. Or To test the effect of the concentration of the solution on the cell a student placed some plant cell and animal cell (RBC) for 15 minute in the hypertonic solution and then shifted them into hypotonic solution. Answer the following question: a) What is hypotonic solution. b) What will the expected observation in the above situation. c) what is the role of cell wall in the cell in above situation.