Biology:2004:CBSE:[All India ]:Set-I
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Q1
How is haemoglobin differently located in humans and earthworms? Marks:1View AnswerAnswer:
Out of syllabus
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Q2
What is apoptosis with reference to ageing? Marks:1View AnswerAnswer:
Out of syllabus
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Q3
What are the starting points of a grazing food chain and a detritus food chain respectively? Marks:1View AnswerAnswer:
The starting point in grazing food chain is grass and in the detritus food chain is dead organic matter.
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Q4
A cardiologist observed an enlarged QR wave in the ECG of a patient. What does it indicate? Marks:1View AnswerAnswer:
An enlarged QR wave in the ECG of a patient indicates ventricular hypertrophy.
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Q5
Name the type of cells that produce antibodies. Marks:1View AnswerAnswer:
B cells
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Q6
What is meant by Respiration Quotient (RQ)? When will the value of RQ be 1 and when will it be less than 1. Marks:2View AnswerAnswer:
Out of syllabus
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Q7
Explain any two functions of cerebrospinal fluid in humans. Marks:2View AnswerAnswer:
Out of syllabus
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Q8
Name the organism that causes Anthrax in cattle. Why does the infected animal die within 2 or 3 days? Marks:2View AnswerAnswer:
Bacillus anthracis. Respiratory infection initially starts with cold or flu-like symptoms for several days, followed by severe (and often fatal) respiratory collapse.This disease can rarely be treated, even if diagnosed in early stages of infection. -
Q9
Differentiate between quiescence and dormancy with reference to seed germination. Marks:2View AnswerAnswer:
Out of syllabus
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Q10
How is our gut lining protected from its own secretion of proteases? Marks:2View AnswerAnswer:
The gut lining has mucus cell covering which provides protection to the epitheial lining from its own secretion of proteases. Proteases are secreted in inactive form and posses no threat to the gut lining.
