All Free Everyday Science MCQs with Answers

1191. Plasmids are most often found in:

• A. Bacteria
• B. Virus
• C. Fungi
• D. Viroid

Explanation: Plasmids are small circular DNA molecules commonly found in bacteria, where they can carry useful genes such as antibiotic-resistance genes. They are not normal features of viruses or viroids.

1192. Mycology is a study of_______?

• A. Virus
• B. Bacteria
• C. Anti virus
• D. Fungi

Explanation: Mycology is the branch of biology concerned with fungi, including mushrooms, molds and yeasts. The study of bacteria is bacteriology.

1193. Father of Homeopathy is__________?

• A. Samuel Hahnemann
• B. Robert Dover
• C. Hakeem Suleman
• D. Dr Anwaar Khan

Explanation: Samuel Hahnemann, a German physician, formulated homeopathy in the late eighteenth century and is therefore regarded as its founder or father.

1194. There are ______types of respiration takes place in frog.

• A. 1
• B. 2
• C. 3
• D. None of these

Explanation: A frog uses three respiratory methods: cutaneous respiration through the skin, buccopharyngeal respiration through the mouth lining, and pulmonary respiration through the lungs.

1195. The color of blood is red due to __________?

• A. Haemoglobin
• B. Neutrophils
• C. Esinophils
• D. Hematocrit

Explanation: Haemoglobin is the iron-containing pigment in red blood cells that gives blood its red colour and carries oxygen. Neutrophils and eosinophils are white blood cells, while haematocrit is a measure of packed red-cell volume.

1196. Short sightedness is due to__________?

• A. Shifting of the iris
• B. Elongation of eyeballs
• C. Weakening of the retina
• D. Weaker muscles

Explanation: In short-sightedness, or myopia, the eyeball is usually too long or the cornea is too strongly curved, so images form in front of the retina. A concave lens moves the focus back onto the retina.

1197. Animal without red blood cells is_________ ?

• A. Frog
• B. Earthworm
• C. Snake
• D. Crocodile

Explanation: Earthworms do not have red blood cells; their haemoglobin is dissolved directly in the blood plasma. Vertebrates such as frogs, snakes and crocodiles possess red blood cells, although those cells retain nuclei in these animals.

1198. vitamin D is chemically know as_________ ?

• A. Retinol
• B. Calciferol
• C. Tocopherol
• D. None of these.Standardized & Admissions Tests

Explanation: Vitamin D is collectively called calciferol, including forms such as D2 and D3. Retinol is vitamin A, tocopherol is vitamin E, and vitamin K is a different fat-soluble vitamin.

1199. Corona disease is a ________ disease?

• A. Infectious diseases
• B. Deficiency disease
• C. Hereditary disease
• D. Physiological diseases

Explanation: COVID-19, caused by the coronavirus SARS-CoV-2, is an infectious disease because it spreads through transmission of a pathogen between hosts. It is not a deficiency, hereditary, or merely physiological disease.

1200. The human eye forms the image of an object at its________?

• A. Cornea
• B. Pupil
• C. Iris
• D. Retina

Explanation: The retina is the light-sensitive layer at the back of the eye where the lens forms a focused image. The cornea and lens help focus light, while the pupil is an opening controlled by the iris.