Biology (Part-IV)

Total Questions: 50

1. Bamboo flowering causes: [RRB NTPC CBT-1 Exam, 04.02.2021 (Shift-II)]

Correct Answer: (4) an increase in the population of rats
Solution:an increase in the population of rats

• A mass flowering phenomenon seen at long intervals in bamboo plants, known as gregarious bamboo flowering, is known to trigger rodent outbreaks.

• As the number of rodents increases, they consume all available food,  including grain fields and stored food, sometimes leading to famine.

2. In which of the following plant groups are the seeds present inside the fruit? [RRB NTPC CBT-1 Exam, 04.02.2021 (Shift-II)]

Correct Answer: (1) Angiosperms
Solution:Angiosperms are plants that produce flowers and bear their seeds in fruits.

• They are the largest and most diverse group within the kingdom Plantae, with about 300,000 species.

3. The animals that eat both plants and animals are called: [RRB NTPC CBT-1 Exam, 03.03.2021 (Shift-I)]

Correct Answer: (4) omnivores
Solution:An omnivores is an organism that eats plants and animals.

• The term stems from the Latin words omnis, meaning "all or everything." and vorare, meaning "to devour or eat."

• Omnivores play an important part of the food chain, a sequence of organisms that produce energy and nutrients for other organisms.

4. The 'father of modern botany' is: [RRB NTPC CBT-1 Exam, 03.03.2021 (Shift-I)]

Correct Answer: (3) Carl Linnaeus
Solution:Carl Linnaeus is known as the father of modern botany.

• He was the first person to frame principles which defined the natural genera and species of any organism.

• He created a uniform system of naming known as binomial nomenclature.

• So, he was known as the father of Taxonomy.

5. Who coined the term 'protoplasm"? [RRB NTPC CBT-1 Exam, 03.03.2021 (Shift-I)]

Correct Answer: (1) Johann Evangelist Purkinje
Solution:The word 'protoplasm' has its origin from Greek, where 'proto' means first and 'plasma' for things formed.

• It was coined by J.E. Purkinje in 1846 to address the material which makes up an animal embryo.

• J.E. Purkinje is a Czech phystologist and anatomist.

6. Which of the following is NOT a type of animal tissue? [RRB NTPC CBT-1 Exam, 03.03.2021 (Shift-I)]

Correct Answer: (2) Meristematic tissue
Solution:Meristematic tissues is a plant tissue contain living cells with varied shapes.

• They possess a large nucleus devoid of the vacuole.

• The cells have no intercellular space.

• The zone where these cells exist is known as meristem.

• The cells of the meristematic tissue divide actively to form specialized structures such as buds of leaves and flowers, tips of roots and shoots, etc.

• These cells help to increase the length and girth of the plant.

7. The average weight of an adult human heart is about: [RRB NTPC CBT-1 Exam, 03.03.2021 (Shift-I)]

Correct Answer: (2) 300 gm
Solution:The average gross weight of the heart was 289.6 g for men at an age of 31-40 years, 284.7 g for women at the same age.

• At an age of 61-70 years, the average weight was 345.9 g for men and 285.1 g ior women.

8. Trachea is a part of the __________system of the human body. [RRB NTPC CBT-1 Exam, 05.03.2021 (Shift-II)]

Correct Answer: (2) respiratory
Solution:Trachea is a part of respiratory system in Human body.

The respiratory system is made up of the organs included in the exchange of oxygen and carbon dioxide. These are the parts:

• Nose

• Mouth

• Throat (pharynx)

• Voice box (larynx)

• Windpipe (trachea)

• Large airways (bronchi)

• Small airways (bronchioles) Lungs

9. Which of the following organelles is called suicidal bags of the cell? [RRB NTPC CBT-1 Exam, 05.03.2021 (Shift-II)]

Correct Answer: (1) Lysosomes
Solution:Raja Ram Mohan Roy is known as the Father of Modern India and he founded the first religious reform organization that is called BrahmoSamaj in 1828.

• It was established at Calcutta on August 20.

• The two most eminent leaders of the BrahmoSamaj were Debendranath Tagore and Keshab Chandra Sen.

• The BrahmoSamaj was one of the first important organizations of religious reforms.

10. Which of the following is not the fungal disease of the plant? [RRB NTPC CBT-1 Exam, 09.03.2021 (Shift-I)]

Correct Answer: (2) Citrus canker
Solution:Citrus canker is a highly damaging disease of citrus crops caused by the bacterium Xanthomonasaxonopodis.

• Infection causes lesions on the leaves, stems, and fruit of citrus trees, including lime, oranges, and grapefruit.