This set of Class 12 Biology Chapter 7 Multiple Choice Questions & Answers (MCQs) focuses on “Evolution” for NEET Preparation.
1. Blue-green algae originated about ______ years ago.
a) 1.5 billion
b) 2.5 billion
c) 3.5 billion
d) 4 billion
View Answer
Explanation: Prokaryotic form of life was formed. Also, blue-green algae originated about 1.5 billion years ago. They evolved during the Archaeozoic era.
2. What occurred during the Cambrian period of plant evolution?
a) Single-celled bacteria evolved in the sea
b) Blue-green algae evolved in the sea
c) Marine multicellular algae evolved
d) Unicellular plants evolved
View Answer
Explanation: Marine bacteria evolved. Along with this, colonial multicellular filamentous algae evolved in oceans during the Cambrian period. This occurred about seven crore years ago.
3. Marine plants were abundant during which period?
a) Cambrian
b) Ordovician
c) Silurian
d) Permian
View Answer
Explanation: Marine plants were abundant during the Ordovician period. Plants also reached fresh water during this period. It occurred about 6 to 7 crore years ago during the Palaeozoic era.
4. Bryophytes belonged to _______ ancestral chain.
a) Diphyte
b) Tracheophyte
c) Monophyte
d) Chlorophyte
View Answer
Explanation: Bryophytes belonged to chlorophyte ancestors. Bryophytes originated about 6.5 crore years ago. Bryophytes flourished during the tertiary period.
5. Which of the following does not belong to tracheophyte ancestors?
a) Herbaceous lycopods
b) Arborescent lycopods
c) Sphenopsids
d) Zosterophyllum
View Answer
Explanation: Herbaceous lycopods, arborescent lycopods, and zosterophyllum belong to the ancestral line of tracheophyte. They occurred during the period of Jurassic, Permian, and Silurian respectively. Sphenopsids belonged to Psilophyton.
6. Origin of first seed plants occurred during which period?
a) Carboniferous
b) Permian
c) Silurian
d) Cambrian
View Answer
Explanation: It was during the Carboniferous period when the first seed plants occurred. Ancestral gymnosperms, ferns, and bryophytes also originated during this period. It occurred at about 6.5 crore years ago.
7. Evolution of gymnosperms was at its peak during the Triassic period.
a) True
b) False
View Answer
Explanation: It is a wrong statement as the evolution of gymnosperms were at its peak during the Jurassic period and not Triassic. During the Triassic period, the forests of conifers, cycads, and other gymnosperms evolved.
8. It was during the Cretaceous period when ______ appeared.
a) Gymnosperms
b) Monocots
c) Dicots
d) Angiosperms
View Answer
Explanation: Angiosperms appeared during the Cretaceous period about 7.1 crore years ago. Dicots also began their evolution during this period. They belonged to the Mesozoic era.
9. Rise of monocots occurred during which epoch?
a) Pliocene
b) Oligocene
c) Eocene
d) Miocene
View Answer
Explanation: Rise of monocots occurred during the epoch Oligocene. It occurred at about 1.9 crore years ago. They belonged to the Tertiary period of the Cenozoic era.
10. Increase of herbs and grasses occurred _______ years ago.
a) Two lakhs
b) Six lakhs
c) Seven lakhs
d) One crore
View Answer
Explanation: It was 7 lakh years ago when herbs and grasses increased in population. They belonged to the epoch Pleistocene of the Quaternary period. They collectively occurred during the Cenozoic era.
Sanfoundry Global Education & Learning Series – Biology – Class 12.
To practice all chapters and topics of class 12 Biology for NEET Exam, here is complete set of 1000+ Multiple Choice Questions and Answers.
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- Check Class 12 - Biology Books
- Practice Class 12 - Mathematics MCQs
- Practice Class 12 - Chemistry MCQs
- Practice Class 11 - Biology MCQs
- Practice Class 12 - Physics MCQs
