Please select a subject first
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Mention which of the statements are true (T) and which are false (F). Give reason in support of your answer.
Harmones ‘obey’ the commands like ‘enough, slow down or ‘two little, speed up’
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How do endocrine glands differ from other glands?
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Mention any two differences between a hormone and an enzyme.
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Do you agree with the statement – “ All hormones are chemical signals”? Yes / No. Justify your answer.
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Compare the hormonal response with the nervous response with respect to their speed, transmission and the general nature of changes brought about.
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Mention three important differences between the action of hormones and that of nerves in the regulatory mechanism of our body.
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Mention if the following statement is true (T) or false (F) Give reason.
Flavour and taste are one and the same thing.
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Given alongside is an outline diagram of human body showing position of certain organs.
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- Name the parts numbered 1 to 4.
- What is common to all these parts in regard to the nature of their functions?
- Name the nutrient element which is essential for the normal working of part 2.
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Given below is a certain structure. Write against them its functional activity.
Olfactory nerve and ______.
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Given below is certain structure. Write against them its functional acivity.
Taste bud and …………………..
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Name the four principal tastes and the respective regions of the tongue concerned with their perception.
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Complete the following table by filling in the blank spaces.
| Structure | Function |
| Yellow Spot | |
| Transfers impulse from inner ear to brain | |
| Helps to change the focal length of the eye lens | |
| Spinal cord | |
| Oval window | |
| Dynamic equilibrium |
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Name the following :
(i) The layer of the eyeball that provides nourishment to the eye.
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Give suitable biological reasons for the following statement :
All life on Earth is supported by Photosynthesis.
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Identify the ODD term in each set and name the CATEGORY to which the remaining three belong :
Example : glucose, starch, cellulose, calcium
Odd term : calcium
Category : others are different types of carbohydrates
Addison’s disease, Cushing’s Syndrome, Acromegaly, Leukemia
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Identify the ODD term in each set and name the CATEGORY to which the remaining three belong :
Example : glucose, starch, cellulose, calcium
Odd term : calcium Category : others are different types of carbohydrates
Insulin, Adrenaline, Pepsin, Thyroxine
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Expand the following biological abbreviations :
ATP
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Given below is an experiment setup to demonstrate a particualr tropic movement in germinating seeds. Study the diagram and answer the questions that follow : 
Label the parts 1 and 2.
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Given below is an experiment setup to demonstrate a particualr tropic movement in germinating seeds. Study the diagram and answer the questions that follow :
(ii) Name the tropic movement shown by part 1.
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Given below is an experiment setup to demonstrate a particualr tropic movement in germinating seeds. Study the diagram and answer the questions that follow :
Part 1 is affected by two stimuli. Name them. Which one of the two is stronger?
Part 1 is affected by two stimuli. Name them. Which one of the two is stronger?
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