591. Which of the following disease is caused by female Anopheles mosquito?
1. Chicken Pox
2. Malaria
3. Black Fever
4. Cholera
Option “2” is correct
592. Cattle quickly swallow grass and store it in their __________.
1. Rumen
2. Esophagus
3. Small intestine
4. Salivary glands
Option “1” is correct When the cow first eats, it chews the food just enough to swallow it. The unchewed food travels to the first two stomachs, the rumen and the reticulum, where it is stored until later.
593. Which of the following carries oxygen to various parts of human body?
1. Red blood cells
2. White blood cells
3. Plasma
4. Nerves
Option “1” is correct
Hemoglobin is the protein inside red blood cells that carries oxygen. Red blood cells also remove carbon dioxide from our body, transporting it to the lungs to exhale.
594. Which of the following function is performed by the kidneys in the human body?
Option “1” is correct The kidneys are two bean-shaped organs that extract waste from blood, balance body fluids, form urine, and aid in other important excretory functions of the body.
595. Who discovered bacteria?
1. Antonnie Ven Leeuwenhoek
2. Robert Brown
3. Robert Hook
4. Robert Koch
Option “1” is correct Antonie van Leeuwenhoek, a Dutch merchant who has taught himself how to build a microscope discovered Bacteria in 1683.
Option “4” is correct Deoxyribonucleic acid(DNA) is a molecule that carries the genetic instructions used in the growth, development, functioning and reproduction of all known living organisms and many viruses.
597. ___________ is a straw coloured, viscous fluid constituting nearly 55 per cent of the blood.
1. Plasma
2. Formed Elements
3. Blood Groups
4. Coagulation of Blood
Option “1” is correct Blood plasma is a yellowish coloured liquid component of blood that normally holds the blood cells in whole blood in suspension; this makes plasma the extracellular matrix of blood cells. It makes up about 55% of the body’s total blood volume.
598. When the left ventricle in the human heart contracts, the blood moves to the –
1. Brain
2. Pulmonary artery
3. Aorta
4. Lungs
Option “3” is correct When the left ventricle in the human heart contracts, the blood moves to the Arota.Blood leaves the heart through the aortic valve, into the aorta and to the body.
599. Glaucoma is a disease of the –
1. Skin
2. Lungs
3. Liver
4. Eyes
Option “4” is correct Glaucoma is a disease that damages your eye’s optic nerve. It usually happens when fluid builds up in the front part of your eye. That extra fluid increases the pressure in your eye, damaging the optic nerve.
600. Which of the following is not a waste product produced by plants?
