Give the biological/technical terms for the following: (a) The tropic movement wherein the tendrils of a pea plant twine around a support. (b) A defect in our eye in which some parts of the object are in focus while the other parts are blurred. (c) The type of waste generated in hospitals and pathological laboratories. (d) The surgical technique for females that can be used to prevent pregnancy. (e) The evolutionary process by which new species arise from the existing one.

A scientist wanted to conduct a genetic experiment on mice. He cut the tails of all the mice and made them reproduce. What will be the phenotype of the offsprings? (a) All the offsprings will be tailless. (b) There will be a mix of tailed and tailless offsprings. (c) All the offsprings will have tails. (d) Tail of the offsprings cannot be predicted.

Arrange the following in a logical sequence: (a) Australopithecus, Cro-Magnon, Homo erectus, Neanderthal man. (b) Pupil, Aqueous humour, Retina, Vitreous humour. (c) Effector, Receptor, Motor neuron, Sensory neuron. (d) Loop of Henle, Distal convoluted tubule, Bowman’s Capsule, Proximal convoluted tubule. (e) Water vapour, Soil water, Leaves, Ascent of Sap.

Name the following: (a) The fully developed part of the ovary containing a mature ovum. (b) A waxy layer on the upper epidermis of leaves meant to reduce Transpiration. (c) The ear ossicle which opens into the oval window of Cochlea. (d) The physiological process which is the starting point of all food chains. (e) An insect which is a classic example of natural selection due to industrial melanism.

What is the scientific name of modern man?

Give any two characteristic features of a Cro-Magnon man.

What are Vestigial organs? Give one example of a vestigial structure in the human mouth.

Industrial melanism was observed in: (a) Mice (b) Peppered Moth (c) House Flies (d) Crow

Differentiate between Australopithecus and Modern man based on body hair.

(a) Name the fluid present between the meninges in spinal cord. (b) What is its function?

(a) Explain the term 'Synapse'. (b) Name the neurotransmitter that allows the transmission of impulses across the synapse.

A 17-year-old girl has irregular menstrual cycles and symptoms of adrenal virilism. (a) Hypersecretion of which hormone causes this condition? (b) Mention one symptom of this condition.