Short Answer Type(a) Differentiate between apes and man with respect to the following characteristics: (i) Posture (ii) Cranium (iii) Brow ridges (iv) Locomotion
(a) State four characteristics of the Cromagnon man.
(b) Explain the basic postulates of Darwinism.
(c) Archaeopteryx is a connecting link between reptiles and birds. Justify the statement by giving two characteristics of each group.
(a) Persons suffering from G6PD deficiency are resistant to malaria. Explain.
(b) Define:
(i) Genetic Erosion (ii) Bioinsecticides (iii) Antigen (iv) Psychosis
(c) Define Biofortification.
(a) List the activities of Community Health Services.
(b) Give three early diagnostic symptoms of cancer.
(c) Define: (i) Carrying capacity (ii) Implant (iii) Carcinoma
(a) These are :
(i) Maintaining sanitation of the environment by providing pure and safe drinking water and proper disposal of sewage.
(ii) Providing facilities for prevention and control of communicable diseases such as arranging vaccination compaigns, identifying and isolating diseased cases and giving them treatment.
(iii) Providing maternity and child health services.
(iv) Providing school education, community health education, nutrition education and family welfare.
(v) National programmes like malaria eradication, smallpox eradication and family welfare planning etc., are undertaken.
(b) Symptoms of Cancer :
(i) A lump of hard area in the breast, skin or other organs.
(ii) Persistent cough
(iii) Blood loss from any natural orifice or body opening.
(c) (i) Carrying capacity — It is maximum population size that a given environment can support for an indefinite period.
(ii) Implant — It is a tissue or organ inserted surgically into the human body to replace a defective one.
(iii) Carcinoma — These are tumors made up principally of epethelial cells (of ectodermal or endodermal origin) that cover or line body organs.
Long Answer Type(a) Give four differences between root apex and shoot apex.
(b) Explain the development of the different types of endosperms in angiosperms.
(c) Explain briefly: (i) Capillary water (ii) Osmosis (iii) Aeroponics
(a) Mention one role and one deficiency symptom of the following elements in plant nutrition:
(i) Phosphorus (ii) Iron (iii) Chlorine
(a) What are tropic hormones ? Describe the feedback control of tropic hormones with an example.
(b) Explain the conduction of nerve impulse through a nerve fibre.
(c) Draw a labelled diagram of the T.S. of bone.
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