General Science Jkssb Biology Set 1 Mcqs (605 MCQs) | JKSSB & SSC Quiz

General Science

jkssb biology set 1 mcqs

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Practice Questions

605 Total
Question 211 Discuss
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What is the process by which one organism captures and consumes another organism called?

A
Mutualism
B
Competition
C
Predation
D
Parasitism

Answer & Explanation

Correct Option: C

Predation is a biological interaction where a predator organism hunts, kills, and eats another organism, its prey. This process plays a vital role in population control and energy transfer within ecological food webs.
Question 212 Discuss
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The process by which absorbed nutrients are taken from the blood and utilized by cells for energy, growth, and repair is known as:

A
Transmission
B
Assimilation
C
Transfusion
D
Integration

Answer & Explanation

Correct Option: B

Assimilation is the final physiological stage of the digestive process where absorbed nutrients are transported via the bloodstream and incorporated into the body's cells to build new tissues and provide cellular energy.
Question 213 Discuss
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Which of the following vitamins is also known as Vitamin B1?

A
Niacin
B
Riboflavin
C
Pantothenic acid
D
Thiamin

Answer & Explanation

Correct Option: D

Thiamin, or Vitamin B1, is an essential water-soluble vitamin that plays a crucial role in cellular energy metabolism and the growth, development, and function of cells. Its deficiency historically caused the disease beriberi.
Question 214 Discuss
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Which of the following represents the correct sequence of the human alimentary canal?

A
The buccal cavity ---> Oesophagus -- > Stomach ---> Large intestine ---> Small intestine ---> Rectum ---> Anus
B
The buccal cavity ---> Oesophagus ---> Stomach ---> Small intestine ---> Large intestine ---> Anus ---> Rectum
C
The buccal cavity ---> Oesophagus -- > Stomach ---> Large intestine ---> Small intestine ---> Anus ---> Rectum
D
The buccal cavity ---> Oesophagus -- > Stomach ---> Small intestine ---> Large intestine ---> Rectum ---> Anus

Answer & Explanation

Correct Option: D

The human digestive tract operates in a strict sequential order. It begins at the mouth, travels through the stomach and small intestine for absorption, continues to the large intestine, and ends at the rectum and anus.
Question 215 Discuss
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Which of the following is a function of the cytoskeleton?

A
Protein synthesis
B
Cell division
C
ATP production
D
Cell support and shape

Answer & Explanation

Correct Option: D

The cytoskeleton is a dynamic network of interlocking protein filaments within the cytoplasm. It provides structural integrity, maintains cell shape, and facilitates both cellular movement and intracellular transport.
Question 216 Discuss
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Vitamin B12 is also known as:

A
pantothenic acid
B
cyanocobalamin
C
pyridoxine
D
biotin

Answer & Explanation

Correct Option: B

Vitamin B12 is chemically known as cyanocobalamin (or cobalamin) because it contains the rare trace mineral cobalt at its center. It is vital for DNA synthesis, red blood cell formation, and proper neurological function.
Question 217 Discuss
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Which type of cell lacks a membrane-bound nucleus?

A
Prokaryotic cell
B
Eukaryotic cell
C
Animal cell
D
Plant cell

Answer & Explanation

Correct Option: A

Prokaryotic cells, such as those of bacteria and archaea, are structurally characterized by the absence of a distinct, membrane-bound nucleus. Instead, their genetic material resides in an irregularly shaped region called the nucleoid.
Question 218 Discuss
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Which of the following is a macronutrient?

A
Vitamins
B
Carbohydrates
C
Minerals
D
Antioxidants

Answer & Explanation

Correct Option: B

Macronutrients are fundamental dietary nutrients the body requires in large amounts to function optimally, primarily including carbohydrates, proteins, and fats. They supply the structural materials and caloric energy necessary for life.
Question 219 Discuss
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You grew a small plant in a planter. On maturity, you observed that the plant has green stem, very few branches and the stem is so soft that you could easily break it with your hands. Under which category will you put this plant?

A
Tree
B
Creeper
C
Shrub
D
Herb

Answer & Explanation

Correct Option: D

In botany, plants with soft, non-woody, and green stems are classified as herbs. Unlike shrubs and trees, herbaceous plants typically have minimal lateral branching and frequently die back at the end of the growing season.
Question 220 Discuss
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Who among the following scientists discovered free living cells in pond water for the first time?

A
Robert Brown
B
Franz Bauer
C
Robert Hooke
D
Anton Van Leeuwenhoek

Answer & Explanation

Correct Option: D

In 1674, Antonie van Leeuwenhoek improved the microscope and observed pond water, becoming the first person to describe free-living single-celled organisms, which he charmingly termed 'animalcules'.
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