681. Insulin is received from-

1. Rhizome of ginger
2. Roots of dahlia
3. Balsam flower
4. Potatoes tuber

Option “2” is correct.
Insulin is a hormone which plays an important role in the regulation of blood glucose level. The main source of insulin is from the roots of dahlias and Beta β-cells of the pancreas.
682. Which one of the following human organs is responsible for detoxification of alcohol?

1. Liver
2. Lung
3. Heart
4. Waist

Option “1” is correct.
The liver is responsible for the detoxification of alcohol. Liver detoxify harmful substances through the complex chemical reactions.
683. Red colour in tomato is due to-

1. Capsaicin
2. Lycopene
3. Xanthophyll
4. None of the above

Option “2” is correct.
Lycopene pigment, which is a red colour carotene, is responsible for the redness of tomato.
684. The Scientist known as father of genetics is-

1. Johnson
2. G.J. Mendel
3. F.B. Morrison
4. Morgan

Option “2” is correct.
The law of Inheritance was discovered by Gregor Johann Mendel. He is known as the father of genetics.
685. Lymphocytes cells are formed in which part of human body?

1. Chest
2. Knee
3. Head
4. Spleen

Option “4” is correct.
A lymphocyte is one of the three sub types of white blood cell in a vertebrate’s immune system. Lymphocytes circulate in blood and lymph fluid is found in body tissues including the spleen, thymus, bone marrow, lymph nodes, tonsils, and liver. B-Lymphocytes and T-Lymphocytes are the two main types of lymphocytes.
686. The blood group of universal donor is-

1. B
2. O
3. A
4. AB

Option “2” is correct.
Individuals with blood group ‘O’ are a universal donor because their red blood cells have neither A nor B antigens on their surface. So, the blood of a person having O group can be given to people with any blood group.
687. Vitamin ‘C’ helps in absorption of which of following elements?

1. Iron
2. Calcium
3. Iodine
4. Sodium

Option “1” is correct.
Vitamin C is helpful in iron absorption whereas vitamin D helps in absorption of magnesium and calcium.
688. Opium is obtained from-

1. Dried leaves
2. Roots
3. Latex from unripe fruit
4. Flower

Option “3” is correct.
Opium is the dried latex. The dried latex is obtained from the unripe fruit, by making shallow cuts.
689. Which part of the animal cell is called power house?

1. Cell wall
2. Nucleus
3. Mitochondria
4. Entire cell

Option “3” is correct.
Mitochondria are sometimes described as “the powerhouse of the cell” as they generate energy.
690. The number of bones in an adult human body is-

1. 204
2. 206
3. 208
4. 210

Option “2” is correct.
The skeleton of an adult human body consists of 206 bones. It is composed of 213 bones in a child, which decreases to 206 bones by adulthood after some bones have fused together.
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48 thoughts on “Biology”

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