901. Which of the following is an excretory organ of cockroach?

1. Malphigian Tubules
2. Nephridia
3. Coxal Gland
4. Green Gland

Option “1” is correct
The excretory organ of cockroach is the Malpighian tubules. It is found at the junction of the midgut and hind gut and are about 150 in number. They are fine, yellow coloured and branched threads present in bundles. They lie freely in the haemolymph.
902. Which of the following is responsible for transport of food and other substances in plants?

1. Xylem
2. Phloem
3. Chloroplast
4. None of these

Option “2” is correct
Phloem is responsible for transport of food and other substances in plants. Xylem transport water and solutes from the roots to the leaves.
903. The famous ‘Bubble Baby Disease’ is so called because:

1. It is caused by water bubble
2. The suffering baby makes bubbles of saliva
3. The suffering baby is treated in a germ-free plastic bubble
4. It is cured only water bubble

Option “3” is correct
Bubble baby disease (severe combined immunodeficiency, SCID) is often called “bubble boy disease”. There are several forms of SCID. The famous ‘Bubble Baby Disease’ is named so as the suffering baby is treated in a germ-free plastic bubble.
904. The sigmoid colon is a part of-

1. Small Intestine
2. Large Intestine
3. Pharynx
4. Rectum

Option “2” is correct
Sigmoid colon, a terminal section of the large intestine that connects the descending colon to the rectum and its function is to store fecal wastes until they are ready to leave the body.
905. Which of the following disease is caused by the excessive used alcoholic beverage?

1. Appendicitis
2. Viral hepatitis
3. Gall stones
4. Liver cirrhosis

Option “4” is correct
It is caused by the excessive use of alcoholic beverage. Liver Cirrhosis is a serious condition where normal liver tissue is replaced by scar tissue.
906. Bright’s disease affects human body in the part-

1. kidney
2. Spleen
3. Heart
4. Liver

Option “1” is correct
Bright’s disease is also known as uremia which affects the kidney. It fuses the physiology of kidney; as result, the amount of urea increases in blood.
907. The hormone that stimulates heart beat is-

1. Thyroxine
2. Gastrin
3. Glycogen
4. Dopamine

Option “1” is correct
Thyroxine hormone can increase the heartbeat; its principal function is to stimulate the consumption of oxygen and thus the metabolism of all cells and tissues in the body.
908. What is MRI?

1. Magnetic Record of Intestines
2. Magnetic Recording of investigations
3. Magnetic Resonance Imaging
4. Magnetic Resonance in Intestines

Option “3” is correct
Magnetic resonance imaging (MRI) is a test that uses to make pictures of organs and structures inside the body.
909. The temperature of the human body-

1. Decreases in winters
2. Increases in summers
3. Neither decrease in winters nor increases in summers.
4. Increases in winters.

Option “3” is correct
The temperature of the human body neither decreases in winters nor increases in summers. The usual temperature of the human body is 98.4° F or 37°C and is controlled by the hypothalamus in the brain.
910. What function does blood perform in the body?

1. Takes oxygen to all parts
2. Maintains liquidity
3. Helps in digestion
4. Helps in erection

Option “1” is correct
Blood perform many important functions within the body including supply of oxygen to tissues (bound to haemoglobin, which is carried in red cells), the supply of nutrients such as glucose, amino acids and fatty acids.

15 thoughts on “Biology”

Leave a Comment

Your email address will not be published. Required fields are marked *

Scroll to Top