61)

Which of the following is the largest dental tissue?

SSC CHSL 2021

A)

Root

B)

Pulp

C)

Enamel

D)

Dentin

62)

Which one of the following is a rare disease caused by the deficiency of Vitamin D that causes the bones to become soft and to bend?

SSC CHSL 2021

A)

Rickets

B)

Pernicious anemia

C)

Atrophic gastritis

D)

Lupus

63)

_______ glands release tears from our eyes.

SSC CHSL 2021

A)

Adrenal

B)

Pituitary

C)

Lacrimal

D)

Thyroid

64)

To which group of organic molecules does 'Monosaccharides' belong?

SSC CHSL 2021

A)

Carbohydrates

B)

Lipids

C)

Proteins

D)

Nucleic acids

65)

Swollen bluish veins resulting from the valves that do not close properly are called ______.

SSC CHSL 2021

A)

superficial veins

B)

varicose veins

C)

systemic veins

D)

deep veins

66)

Rickets and night-blindness are caused by the deficiency of ______ and ______, respectively.

SSC CHSL 2021

A)

Vitamin D, Vitamin C

B)

Vitamin B1, Vitamin C

C)

Vitamin E, Vitamin A

D)

Vitamin D, Vitamin A

67)

Which of the following gases is released in the process of photosynthesis?

SSC CHSL 2021

A)

Oxygen

B)

Nitrogen

C)

Nitrous dioxide

D)

Carbon dioxide

68)

Respiratory failure is a condition in which your blood doesn't have enough ______ or has too much ______.

SSC Selection Post Matric 2022

A)

hydrogen; oxygen

B)

oxygen; carbon dioxide

C)

nitrogen; oxygen

D)

carbon-dioxide; oxygen

69)

Which of the following statements is INCORRECT about redworms?

SSC Selection Post Matric 2022

A)

They have a structure called ‘gizzard’, which helps them in grinding their food.

B)

Redworms need dry surroundings for their survival.

C)

Redworms do not have teeth.

D)

A redworm can eat food equal to its own weight, in a day.

70)

Which of the following statements is INCORRECT regarding DNA?

SSC Selection Post Matric 2022

A)

The bases found in DNA come in only three varieties: adenine, cytosine and guanine.

B)

Genes are made of DNA, and so is the genome itself.

C)

DNA is the molecule that is the hereditary material in all living cells.

D)

DNA is a very large molecule, made up of smaller units called nucleotides.