ZOO/III/EC/05 Student's Copy
2 0 1 8
CBCS
3rd Semester
ZOOLOGY
THIRD PAPER
Evolution and Ethology
Full Marks 75
Time 3 hours
PART A—OBJECTIVE
Marks 25
The figures in the margin indicate full marks for the questions
SECTION—A
Marks 10
Tick the correct answer in the brackets provided 1×10=10
1. The major gene in Tibetan adaptation to high altitude is
HBB Cortex
EPAS1 BMP4
2. The genes that control melanism in Biston betularia are located on
chromosome 1 chromosome 17
chromosome 6 chromosome 11
/52 1 Contd.
3. The theory of symbiogenesis was originally postulated by
Konstantin Mereschkowski
Ivan Wallin
Boris Kozo-Polyansky
Lynn Margulis
4. All birds are descended from a dinosaurian group of
ceratopsia ornithopoda
ornithischia theropoda
5. Wallace's line is an imaginary border between
Nearctic and Indomalayan
Australasian and Oriental
Ethiopian and Palearctic
Neotropical and Afrotropic
6. The species of poison dart frogs are all poisonous and morphologically very
similar, which is an example of
aggressive mimicry
Batesian mimicry
Müllerian mimicry
automimicry
7. A single second) waggle during a bee dance corresponds to the
food location at about
750 m distance 150 m distance
50 m distance 20 m distance
8. Infrasound is defined as a sound having a frequency of
2 kHz to 20 kHz >20 kHz
<20 Hz >50 Hz
ZOO/III/EC/05/52 2 Contd.
9. The Red Queen effect was postulated by
William D. Hamilton
Hugh Cott
Karl von Frisch
Leigh Van Valen
10. Oxytocin is a hormone that regulates
personal bonding and childbirth
secondary sexual characters
pregnancy and foetal development
milk secretion and ovulation
SECTION—B
Marks 15
Write short notes on the following 3×5=15
1. Sympatric speciation
OR
Kettlewell's experiment
2. Mixotricha paradoxa
OR
Oparin-Haldane hypothesis
3. Mitochondrial Eve
OR
Aggressive mimicry
4. Imprinting
OR
Sickle dance
ZOO/III/EC/05/52 3 Contd.
5. Functions of melatonin
OR
Transgender hormone therapy
PART B—DESCRIPTIVE
Marks 50
The questions are of equal value
1. How does natural selection operate on beak variation in Darwin's finches?
OR
Explain the fact that people having mutant HBB gene are innately immune
to falciparum malaria.
2. Discuss the development and concept of RNA world hypothesis.
OR
Give an account on the phenomenon of Cambrian explosion and the animal
life during the period.
3. Describe hominin fossils relevant to the evolution of modern humans.
OR
Compare and contrast aposematism and camouflage in animal warfare.
4. Explain the concepts of altruism and reciprocal altruism.
OR
Describe the principle of echolocation in microbats and odontocetes.
5. How do higher animals maintain their territories?
OR
Discuss how bees use their hormones for social organization.