biology question paper solutions 2023 class 12th Hsc maharashtra board

Описание: biology question paper solutions 2023 class 12th Hsc maharashtra board

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SECTION-D
Attempt any THREE of the following questions :
Q. 27. (a) What is blood pressure?
(b) Give the name of the instrument which is used to measure
the blood pressure
(c) Differentiate between an artery and a vein with reference to
lumen and thickness of wall.
Q. 28.(a) Describe any three adaptations in anemophilous flowers.
Mention any one example of the anemophilous flower.
(b) Describe any three adaptations in hydrophilous flowers.
Mention any one example of the hydrophilous flower.
Q. 29. (a) What is polymerase chain reaction (PCR)?
(b) Describe three steps involved in mechanism of PCR.
Q. 30. (a) Give any four significances of fertilization in human.
(b) Mention the names of any two organs each derived from
ectoderm and mesoderm.
Q. 31. (a) Give any two functions of cerebellum
(b) Write the names of any four motor cranial nerves with
their appropriate serial number.
(c) Which hormones stimulate liver for glycogenesis and
glucogenolysis?
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8 march 2023
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class 12th Hsc maharashtra board
biology question paper solutions 2023 class 12th Hsc maharashtra board
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