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Draw labelled diagram of internal structure of human heart.
Label right atrium, mitral valve, left ventricle and pulmonary semilunar valve.
Write a function of Eustachian and tricuspid valve found in human heart.
Concept: Human Heart
With the help of a neat and labelled diagram, describe reflex arc.
Concept: Reflex Action
Describe the T. S. of thyroid gland
Concept: Human Endocrine System
Short answer question
List the properties of the nerve fibres.
Concept: Neural Tissue
Sketch and label T. S. of Spinal cord.
Concept: The Spinal Cord
Name three Mixed cranial nerves along with their numbers.
Concept: Synapse
Distinguish between
Cerebrum and Cerebellum.
Concept: Synapse
Answer the questions after observing the diagram given below.
- What acts as the first messenger?
- Why can’t hormones like catecholamines enter their target cells through plasma membrane?
- Name the mode of hormone action shown in the diagram.
Concept: Human Endocrine Glands and Harmones >> Adrenal Gland (Suprarenal Gland)
What is vaccine?
Concept: Vaccination and Immunization
Enlist the four types of T- lymphocytes, responsible for immune response of our body.
Concept: Immunity
Enlist any two features of Acquired immunity.
Concept: Immunity
Enlist the advantages of biogas.
Concept: Microbes in Energy Generation
Which are the bacteria responsible for converting organic acids into methane?
Concept: Microbes in Energy Generation
Give economic importance of apiculture
Concept: Animal Husbandry (Livestock)
Explain the process of sewage water treatment before it can be discharged into natural water bodies.
Concept: Microbes in Sewage Treatment
What is a heterocyst?
Concept: Microbes as Biofertilizers
What is emasculation?
Concept: Plant Breeding
Name any two edible mushrooms.
Concept: Microbes in Human Welfare
Give the economic importance of lac.
Concept: Animal Husbandry (Livestock)
Write chemical reactions to represent Methanogenesis.
Concept: Microbes in Energy Generation
