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?

1. Excretion
2. Respiration
3. Digestion
4. Transportation

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.
596. What is the full form of DNA?

1. Diribo nucleic acid
2. Di nucleic acid
3. Dual nitrogen acid
4. Deoxyribonucleic acid

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?

1. Water vapour
2. Oxygen
3. Gum Arabic
4. Carbon dioxide

Option “3” is correct
Gum Arabic, also known as acacia gum, or meska, is a natural gum. It is made of hardened sap from two species of acacia tree.
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48 thoughts on “Biology”

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