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10 questions · 2007 · answers as per the UPSC key

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All years of Biology · Full UPSC 2007 paper

Which one of the following parts of the pitcher plant becomes modified into a pitcher?

(a) Stem
(b) Leaf
(c) Stipule
(d) Petiole
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Answer: (b) Leaf

In the human body, to which structure is the appendix attached?

(a) The large intestine
(b) The small intestine
(c) The gall-bladder
(d) The stomach
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Answer: (a) The large intestine

In the human body

which one of the following hormones regulates blood calcium and phosphate?

(a) Glucagon
(b) Growth hormone
(c) Parathyroid hormone
(d) Thyroxin
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Answer: (c) Parathyroid hormone

How do most insects respire?

(a) Through skin
(b) Through gills
(c) By lungs
(d) By tracheal system
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Answer: (d) By tracheal system

Which one of the following parts of the human brain is the regulating centre for swallowing and vomiting?

(a) Cerebellum
(b) Cerebrum
(c) Medulla oblongata
(d) Pons
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Answer: (c) Medulla oblongata

Production

of which one of the following is a function of the liver?

(a) Lipase
(b) Urea
(c) Mucus
(d) Hydrochloric acid
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Answer: (b) Urea

Which of the following is not a digestive enzyme in the human system?

(a) Trypsin
(b) Gastrin
(c) Ptyalin
(d) Pepsin
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Answer: (b) Gastrin

Which of the following light types of light are strongly absorbed by plants:

(a) Violet and Orange
(b) Blue and Red
(c) Indigo and Yellow
(d) Yellow and Violet
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Answer: (b) Blue and Red

In human beings, normally

in which one of the following parts does the sperm fertilize the ovum?

(a) Cervix
(b) Fallopian Tube
(c) Lower Part of Uterus
(d) Upper Part of Uterus
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Answer: (b) Fallopian Tube

Which on the following is the correct sequence in order of decreasing length of the three structural parts given below of small intestine in the human body?

(a) Jejunum – Duodenum – Ileum
(b) Ileum – Duodenum – Jejunum
(c) Jejunum – Ileum – Duodenum
(d) Ileum – Jejunum – Duodenum
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Answer: (d) Ileum – Jejunum – Duodenum