RRB ALP - General Science - Biology MCQs

1.

Plants which are adapted to grow in soils containing high concentration of salt are known as:

   A.) Thallophytes
   B.) Mesophytes
   C.) Halophytes
   D.) Xerophytes

Answer: Option 'C'

Halophytes

2.

Bowman’s Capsule’ works as a part of the functional unit of which among the following human physiological system?

   A.) Reproductive System
   B.) Excretory System
   C.) Circulatory System
   D.) Respiratory System

Answer: Option 'B'

Excretory System

3.

Which among the following have a ‘mixed heart’ ,that is the heart in which the oxygenated and the deoxygenated blood is mixed?

   A.) Nematodes
   B.) Fishes
   C.) Reptiles
   D.) Birds

Answer: Option 'C'

Reptiles and Amphibians have a mixed heart.

4.

The bacterium ‘Escherichia coli’ is found mainly in:

   A.) Paddy fields for nitrogen fixation
   B.) Human Intestine
   C.) Pteridophytes
   D.) Root Nodules of leguminous plants

Answer: Option 'B'

Human Intestine

5.

Saffron’ is obtained from which among the following parts of the plant?

   A.) Pollen
   B.) Stigma
   C.) Stamen
   D.) Anther

Answer: Option 'B'

Stigma

6.

Human Papilloma Virus is related to which of the following diseases?

   A.) Leukemia
   B.) Cervical Cancer
   C.) Prostate Cancer
   D.) Lymphatic Filariasis

Answer: Option 'B'

Cervical Cancer

7.

Which among the following is not a ‘heriditary’ disease?

   A.) Haemophilia
   B.) Thalessemia
   C.) Colour-Blindness
   D.) Leukemia

Answer: Option 'D'

Leukemia

8.

Pest-resistant cotton commonly known as ‘Bt-Cotton’ is genetically engineered by inserting a gene from a:

   A.) Protist
   B.) Bacterium
   C.) Virus
   D.) Microalgae

Answer: Option 'B'

Bacterium

9.

Anemophily’ is pollination by :

   A.) Bats
   B.) Wind
   C.) Birds
   D.) Ants

Answer: Option 'B'

Wind

10.

The nutritional supplements Spirulina, Chorella and the Vitamin-C supplement, Dunaliella are actually :

   A.) Bryophytes
   B.) Algae
   C.) Probiotics
   D.) Lichens

Answer: Option 'B'

Algae

11.

Penicillin’ which is used as an antibiotic is obtained from :

   A.) Lichens
   B.) Bacteria
   C.) Fungi
   D.) algae

Answer: Option 'C'

Fungi

12.

Meg-1 is an imprinted gene which finds expression only from maternal chromosomes which regulates the transfer of nutrients from the plant to the seed. This gene has been discovered in :

   A.) Sugarcane
   B.) Maize
   C.) jute
   D.) cotton

Answer: Option 'B'

Maize

13.

The instrument that measures arterial blood pressure is known as :

   A.) Sphygmomanometer
   B.) Pyknometer
   C.) Hypsometer
   D.) Sphygmoscope

Answer: Option 'A'

Sphygmomanometer

14.

Which of the following statements is NOT true regarding the Vitamin C?

   A.) Vitamin C is a water-soluble vitamin.
   B.) Only Vitamin C is to be taken externally, all others are produced in the human body.
   C.) Vitamin C is the only vitamin which is also a hormone.
   D.) Scurvy is caused by the deficiency of Vitamin C

Answer: Option 'C'

Vitamin C is the only vitamin which is also a hormone.

15.

Which of the following artificial sweeteners is not broken down by the body and therefore it is non-caloric (no-calorie sweetener) :

   A.) Cyclamate
   B.) Sucralose
   C.) Aspartame
   D.) Saccharin

Answer: Option 'B'

Sucralose

16.

Which of the following tests is used for the diagnosis of ‘Colour-Blindness’ in people ?

   A.) Rorschach test
   B.) Ishihara Test
   C.) Widal Test
   D.) ELISA test

Answer: Option 'B'

Ishihara Test

17.

The Science of using mechanical devices with human muscle skeleton and nervous systems to assist or enhance motor control lost by trauma, disease or defect is called:

   A.) Biomechatronics
   B.) Orthotics
   C.) Bionics
   D.) Gerontechnology

Answer: Option 'A'

Biomechatronics

18.

How does calcium carbide ripen mangoes?

   A.) It reacts with moisture and releases Ethyne
   B.) It reacts with moisture and releases Acetaldehyde, which in turn releases ethylene
   C.) It reacts with moisture and releases Ethylene
 
   D.) It reacts with starch and releases Acetylene

Answer: Option 'C'

It reacts with moisture and releases Ethylene

19.

Which among the following is not among Micronutrients required for plants?

   A.) Zinc
   B.) Manganese
   C.) Magnesium
   D.) Molybdenum

Answer: Option 'C'

Magnesium

20.

Which among the following is the edible part in Rice?

   A.) Embryo
   B.) Fruit
   C.) Cotyledons
   D.) Endosperm

Answer: Option 'D'

Endosperm


General Science - Biology MCQs Download Pdf