What is the pH level of blood of a normal person?
- (a)4·5 – 4·6
- (b)6·45 – 6·55
- (c)7·35 – 7·45
- (d)8·25 – 8·35
Show answerHide answer
Official answer(c) 7·35 – 7·45
Biology
97 questions in Science & Technology.
Asked in 2008, 2007, 2006, 2005, 2004, 2003
Norman Ernest Borlaug who is regarded as the father of the Green Revolution in India is from which country?
- (a)United States of America
- (b)Mexico
- (c)Australia
- (d)New Zealand
Show answerHide answer
Official answer(a) United States of America
Assertion (A): In human body, liver has an important role in fat digestion. Reason (R): Liver produces two important fat-digesting enzymes.
- (a)Both A and R are individually true and R is the correct explanation of A
- (b)Both A and R are individually true but R is not the correct explanation of A
- (c)A is true but R is false
- (d)A is false but R is true
Show answerHide answer
Official answer(c) A is true but R is false
Among the following, which one lays eggs and does not produce young ones directly?
- (a)Echidna
- (b)Kangaroo
- (c)Porcupine
- (d)Whale
Show answerHide answer
Official answer(a) Echidna
Which one of the following parts of the pitcher plant becomes modified into a pitcher?
- (a)Stem
- (b)Leaf
- (c)Stipule
- (d)Petiole
Show answerHide answer
Official 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
Show answerHide answer
Official 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
Show answerHide answer
Official answer(c) Parathyroid hormone
How do most insects respire?
- (a)Through skin
- (b)Through gills
- (c)By lungs
- (d)By tracheal system
Show answerHide answer
Official 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
Show answerHide answer
Official 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
Show answerHide answer
Official answer(b) Urea
Which of the following is not a digestive enzyme in the human system?
- (a)Trypsin
- (b)Gastrin
- (c)Ptyalin
- (d)Pepsin
Show answerHide answer
Official 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
Show answerHide answer
Official 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
Show answerHide answer
Official 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
Show answerHide answer
Official answer(d) Ileum – Jejunum – Duodenum
What is the name of the vessel that delivers the nutrient-rich blood from the stomach and small intestine to the liver?
- (a)Left hepatic artery
- (b)Hepatic vein
- (c)Right hepatic artery
- (d)Hepatic portal vein
Show answerHide answer
Official answer(d) Hepatic portal vein
Consider the following statements with reference to the human body: 1. The common bile duct releases its contents into the stomach. 2. The pancreatic duct releases its contents into the duodenum. Which of the statements given above is/are correct?
- (a)1 only
- (b)2 only
- (c)Both 1 and 2
- (d)Neither 1 nor 2
Show answerHide answer
Official answer(b) 2 only
What is the order of magnitude of electric resistance of the human body (dry)?
- (a)10² ohm
- (b)10⁴ ohm
- (c)10⁶ ohm
- (d)10⁸ ohm
Show answerHide answer
Official answer(b) 10⁴ ohm
Consider the following statements : 1. During the process of osmosis, the solvent travels from the concentrated solution to the dilute solution. 2. In the reverse osmosis, external pressure is applied to the dilute solution. Which of the statements given above is/are correct?
- (a)1 only
- (b)2 only
- (c)Both 1 and 2
- (d)Neither 1 nor 2
Show answerHide answer
Official answer(d) Neither 1 nor 2
Assertion (A): All the proteins in our food are digested in small intestine only. Reason (R): The protein-digesting enzymes from pancreas are released into small intestine.
- (a)Both A and R are individually true and R is the correct explanation of A
- (b)Both A and R are individually true but R is not the correct explanation of A
- (c)A is true but R is false
- (d)A is false but R is true
Show answerHide answer
Official answer(d) A is false but R is true
Assertion (A): Amoeba reproduces by fission. Reason (R): All unicellular organisms reproduce by asexual methods.
- (a)Both A and R are individually true and R is the correct explanation of A
- (b)Both A and R are individually true but R is not the correct explanation of A
- (c)A is true but R is false
- (d)A is false but R is true
Show answerHide answer
Official answer(c) A is true but R is false
The hormone insulin is a
- (a)Glycolipid
- (b)Fatty acid
- (c)Peptide
- (d)Sterol
Show answerHide answer
Official answer(c) Peptide
In which organ of the human body are the lymphocyte cells formed?
- (a)Liver
- (b)Long bone
- (c)Pancreas
- (d)Spleen
Show answerHide answer
Official answer(b) Long bone
With reference to the work of human kidney, consider the following statements: 1. After the waste is removed in the kidney, the cleaner blood is sent back through renal artery. 2. From Bowman’s capsule, the filtered liquid passes through tiny tubes where much of the glucose is reabsorbed and sent back to the blood in the renal vein. Which of these statements is/are correct?
- (a)Only 1
- (b)Only 2
- (c)Both 1 and 2
- (d)Neither 1 nor 2
Show answerHide answer
Official answer(b) Only 2
Octopus is
- (a)an arthropod
- (b)an echinoderm
- (c)a hemichordate
- (d)a mollusc
Show answerHide answer
Official answer(d) a mollusc
With reference to normal human beings, consider the following statements: 1. In response to the presence of HCl, secretin is produced from the duodenum 2. Enterogastrone is produced in the small intestine in response to the presence of fatty acids Which of these statements is/are correct?
- (a)Only 1
- (b)Only 2
- (c)Both 1 and 2
- (d)Neither 1 nor 2
Show answerHide answer
Official answer(c) Both 1 and 2