Q. The population ............ as a result of immigration.

Q. Ethyl alcohol is the end product of ............ respiration.

Q. Why testis are found outside the abdominal cavity in males?

Q. What is the process of conversion of free nitrogen to nitrogenous compound called?

Q. Percentage ratio of natality over mortality is

1. Vital Index
2. Population dynamics
3. Population density
4. Total count

Q. Which one is the most suitable soil for the growth of plants?

1. Sandy soil
2. Loamy Soil
3. Silty soil
4. Clayey soil

Q. Which hormone used for lactation in sterlie cow?

Q. Write the difference between clinical death and biological death.

Q. Name the eye disease related with deficiency of vitamin-A.

Q. Why does muscle fatigue occur?

Q. Explain the phases of spermatogenesis in humans with the help of a diagram.

Q. What are sex hormones? Describe any one male and one female sex hormones.

Q. The maturation of T-lymphocytes occur in the

1. Bone marrow.
2. Spleen.
3. Kidney.
4. Thymus.

Q. How does the transportation of oxygen occur through blood?

Q. Match the column :

Q. Write the name of four types of species.

Q. The rate of photosynthesis is maximum in which colour of light?

1. In green light
2. In red light
3. In yellow light
4. In purple light

Q. Hormone which helps in the closing of stomata is

1. Auxin
2. Ethylene
3. Cyto kinin
4. Abscisic acid

Q. Write the definition and any one significance of parthenogenesis.

Q. Write names of different components present in gastric juice and write the functions of any two components.

Q. Write any two causes of dormancy in seed.

Q. The name of largest endocrine gland of our body is

Q. Name the protein which play an important role in ageing.

Q. Name the fluid present in the cavities of brain and spinal cord.

Q. Explain the development of female gametophyte in angiosperm by well labelled diagram only.

Q. Write the functions of decomposer.

Q. The main source of energy in ecosystem is

Q. Which node of heart does the work of pacemaker. Explain why it is called as life saving apparatus?

Q. The study of physical abnormalities of embryo is called as

Q. Define ureotelic organism with example.