Give appropriate biological technical terms for the following:

(i) The sensory organ in Cochlea.

(ii) Number of live births per 1000 people per year.

(iii) The point of contact between two neurons.

(iv) The accessory gland in human males whose secretion neutralises the acid in the vagina.

(v) Condition when blood sugar level is lowered in the blood.

(vi) Structure which helps in the adjustment of the size of the pupil.

(vii) A surgical method of fertility control in human males.

(viii) Process by which leucocytes migrate through the walls of capillaries.

(ix) A sudden inheritable change in one or more genes.

(x) A non-dividing phase of the cell cycle where more DNA is synthesised.

Complete the table:

A homozygous dominant tall pea plant bearing red flowers (TTRR) is crossed with a homozygous recessive dwarf pea plant bearing white flowers (ttrr).

(i) What is the phenotype and genotype of F₁ individuals?

(ii) Write the possible combination of gametes that are obtained when two F₁ hybrid plants are crossed.

(iii) Mention the phenotypic ratio of the F₂ generation.

(iv) State Mendel's Law of Independent Assortment.

(v) Name two X-linked disorders found in humans.

The diagram below represents an experiment to demonstrate a certain phenomenon in a green plant:

(i) Will the level of mercury in the glass tubing rise or fall? Which conducting tissue of the plant does the glass-tubing represent?

(ii) Define Transpiration.

(iii) How will the rate of the above process differ if the environment of the plant has:

1. Less humidity
2. High temperature?

(iv) State any two advantages of transpiration to the plant.

(v) Draw a neat labelled diagram of a Plasmolysed cell.