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Top 100 Biology GK Questions

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Biology General Knowledge Questions   

  Q :  

Which of the following fall under Phylum Cnidarian of the animal kingdom?

(A) Sea urchins

(B) Earthworms

(C) Snails

(D) Corals

Correct Answer : D
Explanation :

1. Coral comes under the Cnidarian phylum of the animal kingdom.

2. Coral, also known as Coral and Mirajan, is a type of tiny sea creatures that live in groups numbering millions.

3. Coral, also known as Coral and Mirajan, is a type of tiny sea creature that lives in groups numbering millions.


Q :  

Starch and sugar in our food are forms of _____.

(A) Proteins

(B) fats

(C) vitamins

(D) carbohydrates

Correct Answer : D
Explanation :

1. Starch and sugar found in our food are forms of carbohydrates. Carbohydrates are an important part of our diet. They provide energy to the body and are essential for other body functions.

2. Starch is a complex carbohydrate found in plants. It is found in wheat, rice, potatoes, and other grains. Starch is used to thicken food, make sugar, and make other foods.


Q :  

Which of the following statements about bryophytes is not true? 

(A) They are called amphibians of the plant kingdom.

(B) The presence of a special tissue is found in these for the flow of

(C) water and other substances from one part of the plant body to another. Their body is generally differentiated by taking the form of stem and leaf-like structures.

(D) Moss (Funaria) and Marchantia are examples of bryophytes.

Correct Answer : C
Explanation :

All the given statements about bryophytes are true.

1.  They are called amphibians of the plant kingdom.

2. The presence of a special tissue is found in these for the flow of

3. Moss (Funaria) and Marchantia are examples of bryophytes.


Q :  

Sponges belong to phylum ______ of the animal kingdom.

(A) Echinodermata

(B) Porifera

(C) Aschelminthes

(D) Mollusca

Correct Answer : B
Explanation :

1. Sponge belongs to Porifera phylum of the animal kingdom.

2. These are primitive multicellular animals. The study of sponges is known as para zoology.

3. Sponges are mostly irregular in shape and have radial symmetry.

4. The body of a sponge has two layers-

- Epidermis: This is the outer layer that helps move water in and out.

- Mesohyl: This is the middle layer which contains the cells of the sponge.


Q :  

Which of the following options is correct regarding sexually transmitted disease (STD)?

Statement A: Sexually transmitted diseases (STD) are infections transmitted from an infected person to an uninfected person through sexual contact.
Statement B: HIV, HPV and Hepatitis B virus is responsible for STD.

(A) Both Statements A and B incorrect

(B) Only Statement B is correct

(C) Both Statements A and B correct

(D) Only Statement A is correct

Correct Answer : C
Explanation :

This is a correct statement regarding sexually transmitted diseases (STD).

Statement A: Sexually transmitted diseases (STD) are infections transmitted from an infected person to an uninfected person through sexual contact.

Statement B: HIV, HPV and Hepatitis B virus is responsible for STD.


Q :  

Deficiency of which of the following vitamins causes excessive bleeding from wounds?

(A) Vitamin D

(B) Vitamin E

(C) Vitamin A

(D) Vitamin K

Correct Answer : D
Explanation :

1. Vitamin K deficiency causes excessive bleeding from wounds.

2. If there is deficiency of Vitamin K in your body then you can easily get injury marks on your body or skin.


Q :  

The human shoulder joint is an example of a ______ joint.

(A) fixed

(B) pivotal

(C) hinge

(D) ball and socket

Correct Answer : D
Explanation :

1. The human shoulder joint is an example of a ball and socket joint.

2. In this type of joint, a rounded end of one bone fits into a flat or cup-shaped recess of the other bone.


Q :  

The size of the pupil of the eye is controlled by the ______.

(A) blind spot

(B) retina

(C) cornea

(D) iris

Correct Answer : D
Explanation :

1. The iris controls the amount of light entering the eye.

2. Iris is the colored part of the eye, which provides pigment to the eyes.

3. It is attached to the ciliary muscle, which contracts and expands to accommodate the required amount of light.


Q :  

Which part of the digestive system receives secretions from the liver and the pancreas?

(A) Large intestines

(B) Stomach

(C) Gall bladder

(D) Small intestines

Correct Answer : D
Explanation :

The small intestine is the part of the digestive system that receives secretions from the liver and pancreas.


Q :  

Deficiency of which of these vitamins causes anaemia in humans?

(A) Vitamin C

(B) Vitamin B

(C) Vitamin A

(D) Vitamin B12

Correct Answer : D
Explanation :

1. Anemia in humans is caused by a deficiency of Vitamin B12.

2. Vitamin B12 is a water-soluble vitamin

3. Which is necessary for the formation of red blood cells?

4. The most common cause of anaemia is low iron levels in the body. This type of anaemia is called iron deficiency anaemia.


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