The kingdom that contains prokaryotic organisms is: MCQ with Answer and Explanation

The kingdom that contains prokaryotic organisms is:
A. Fungi
B. Monera
C. Plantae
D. Protista
Answer: Option B
Solution (By JKSSB Mock Tests)
Whittaker's five-kingdom system places all prokaryotes (bacteria, cyanobacteria, archaea) in Monera. They lack a true nucleus and membrane-bound organelles. Protista has unicellular eukaryotes, Fungi and Plantae are multicellular eukaryotes (except yeast). Monera reproduces asexually mainly by binary fission.

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Practice More Biology Questions

Question #1
The scientist who introduced the term 'biology' was:
A. Aristotle
B. Darwin
C. Lamarck and Treviranus
D. Linnaeus

Correct Answer: Option C


Explanation:
The term 'biology' was independently coined by Jean-Baptiste Lamarck (France) and Gottfried Reinhold Treviranus (Germany) around 1802. Aristotle is father of biology, Linnaeus taxonomy, Darwin evolution.

This question belongs to: Science Biology
Question #2
Which of the following statements about viruses is INCORRECT?
A. They lack metabolic machinery.
B. They can have either DNA or RNA as genetic material.
C. They reproduce by binary fission.
D. They are obligate intracellular parasites.

Correct Answer: Option C


Explanation:
Viruses do not reproduce by binary fission; they replicate by hijacking host cell machinery. Binary fission is a method of asexual reproduction in bacteria. All other statements are correct.

This question belongs to: Science Biology
Question #3
Assertion (A): The human heart is myogenic.
Reason (R): It beats rhythmically due to signals from the brain.
A. Both A and R are true, and R is the correct explanation.
B. Both A and R are true, but R is not the correct explanation.
C. A is true, but R is false.
D. A is false, but R is true.

Correct Answer: Option C


Explanation:
The heart is myogenic because the heartbeat originates in the SA node within the heart itself, not from brain signals. The brain can modulate the rate but not initiate. Thus, A is true, but R is false.

This question belongs to: Science Biology