CLASS 10th: SCIENCE & TECHNOLOGY
Complete Question Bank & Comprehensive Solution Key (Stuvia Premium Edition)
SECTION 1: BIOLOGY (Heredity and Evolution)
Q1. (A) Choose the correct alternative:
1. Which organ present in human body is not the proof of evolution?
(1) Human hand
(2) Appendix
(3) Ear muscles
(4) Tailbone
ANSWER & EXPLANATION
Correct Option: (1) Human hand
Explanation: Appendix, ear muscles, and tailbone (coccyx) are vestigial organs in humans which serve
as evolutionary remnants. The human hand is a fully functional, highly evolved anatomical structure and
not a vestigial proof of evolution.
2. Transfer of information from molecules of DNA to mRNA is called __________ process.
(1) Translation
(2) Transcription
(3) Translocation
(4) All of the above
ANSWER & EXPLANATION
Correct Option: (2) Transcription
Explanation: Transcription is the process by which the genetic code contained within a DNA molecule is
copied into a complementary strand of mRNA.
Class 10 Science & Technology | Master Question Bank & Solutions Page 1 of 10
, 3. How many nucleotides are present in a codon?
(1) 1
(2) 2
(3) 3
(4) 4
ANSWER & EXPLANATION
Correct Option: (3) 3
Explanation: A codon consists of a sequence of three consecutive nucleotides on an mRNA molecule
that specifies a particular amino acid during protein synthesis.
4. __________ is called as 1st wise man.
(1) Cro-magnon
(2) Neanderthal
(3) Ramapithecus
(4) Dryopithecus
ANSWER & EXPLANATION
Correct Option: (2) Neanderthal
Explanation: The Neanderthal man is considered the first real representative of advanced human
intelligence and is anthropologically classified as the "1st wise man".
5. Which of the following example do not prove anatomical evidences?
(1) Patagium of bat
(2) Foreleg of cat
(3) Nose position of goat
(4) Flipper of whale
ANSWER & EXPLANATION
Correct Option: (3) Nose position of goat
Explanation: The flipper of a whale, foreleg of a cat, and patagium of a bat showcase homologous bone
structures proving anatomical evidence of common ancestry. Nose position is a superficial
morphological feature.
Q1. (B) Answer the following questions as per given instruction:
1. Find the correlation: Natural selection : Darwin :: Principle of use and disuse of organ :
___________.
ANSWER
Lamarck (Jean-Baptiste Lamarck proposed the theory of Lamarckism based on use and disuse).
Class 10 Science & Technology | Master Question Bank & Solutions Page 2 of 10
Complete Question Bank & Comprehensive Solution Key (Stuvia Premium Edition)
SECTION 1: BIOLOGY (Heredity and Evolution)
Q1. (A) Choose the correct alternative:
1. Which organ present in human body is not the proof of evolution?
(1) Human hand
(2) Appendix
(3) Ear muscles
(4) Tailbone
ANSWER & EXPLANATION
Correct Option: (1) Human hand
Explanation: Appendix, ear muscles, and tailbone (coccyx) are vestigial organs in humans which serve
as evolutionary remnants. The human hand is a fully functional, highly evolved anatomical structure and
not a vestigial proof of evolution.
2. Transfer of information from molecules of DNA to mRNA is called __________ process.
(1) Translation
(2) Transcription
(3) Translocation
(4) All of the above
ANSWER & EXPLANATION
Correct Option: (2) Transcription
Explanation: Transcription is the process by which the genetic code contained within a DNA molecule is
copied into a complementary strand of mRNA.
Class 10 Science & Technology | Master Question Bank & Solutions Page 1 of 10
, 3. How many nucleotides are present in a codon?
(1) 1
(2) 2
(3) 3
(4) 4
ANSWER & EXPLANATION
Correct Option: (3) 3
Explanation: A codon consists of a sequence of three consecutive nucleotides on an mRNA molecule
that specifies a particular amino acid during protein synthesis.
4. __________ is called as 1st wise man.
(1) Cro-magnon
(2) Neanderthal
(3) Ramapithecus
(4) Dryopithecus
ANSWER & EXPLANATION
Correct Option: (2) Neanderthal
Explanation: The Neanderthal man is considered the first real representative of advanced human
intelligence and is anthropologically classified as the "1st wise man".
5. Which of the following example do not prove anatomical evidences?
(1) Patagium of bat
(2) Foreleg of cat
(3) Nose position of goat
(4) Flipper of whale
ANSWER & EXPLANATION
Correct Option: (3) Nose position of goat
Explanation: The flipper of a whale, foreleg of a cat, and patagium of a bat showcase homologous bone
structures proving anatomical evidence of common ancestry. Nose position is a superficial
morphological feature.
Q1. (B) Answer the following questions as per given instruction:
1. Find the correlation: Natural selection : Darwin :: Principle of use and disuse of organ :
___________.
ANSWER
Lamarck (Jean-Baptiste Lamarck proposed the theory of Lamarckism based on use and disuse).
Class 10 Science & Technology | Master Question Bank & Solutions Page 2 of 10
