Given below are sets of five terms each. In each case rewrite the terms in logical sequence as directed at the end of each statement. An example has been done for you:
Example : Cortical cells, Root hair, xylem, Soil water, endodermis (absorption of water by the plants)
Answer : Soil water, Root hair, cortical cells, endodermis, xylem.

(i) Active immunity, Antigen, Antibody, Bacteria, Lymphocytes (defence mechanism of the body).

(ii) Implantation, Parturition, Ovulation, Gestation, Fertilisation (stages leading to formation of foetus and birth).

(iii) Oval window, Tympanum, Cochlea, Auditory canal, Ear ossicles (path through which a vibration of sound is transferred in the human ear).

(iv) Karyokinesis, S-phase, Cytokinesis, G1-phase, G2-phase (cell cycle).

(v) Renal vein, Renal artery, Afferent arteriole, Efferent arteriole, Glomerulus (pathway of blood through glomerulus).

Study the following diagram carefully and then answer the questions that follow. The diagram is depicting a defect of the human eye:

(i) Identify the defect shown in the diagram.

(ii) Give two possible reasons for the above defect.

(iii) Draw a neat labelled diagram to show how the above defect can be rectified.

Given below are six sets with four terms each. In each set a term is an odd one and cannot be grouped in the same category to which the other three belong. Identify the odd one in each set and name the category to which the remaining three belong. The first has been done for you as an example.

Given below is an experimental set up to demonstrate a particular process. Study the same and answer the questions that follow:

(i) Name the physiological process being studied.

(ii) Explain the process mentioned above.

(iii) What is the aim of the above experiment ?

(iv) What would you observe in the experimental set-up after an hour? Give a reason to support your answer.

(v) Mention any three adaptations found in plants to overcome the physiological process mentioned in (i) above.