Diversity of Living world unit covers the contents like introduction for life, nature and scope of zoology, branches of zoology, significance of taxonomy, nomenclature, species concept, classification of kingdom Animalia and the contemporary issue “Biodiversity”.
★ It consists various topics which play an important role to understand various contents which we face everyday life.. One of them is biodiversity.
★ Nowadays we are facing several consequences which occur due to the effect of human civilization.
★ If we lose biodiversity, we will lose jobs, food, medicines, and our livelihood will be under thre- at. Unless the decline is halted, the negative impact on daily lives will grow exponentially.
★ From the common man to the big corporate, the future of our gro- wth depends on conserving the variety and richness of biodiversity. Already large fishery areas in the north-west Atlantic have collapsed under the impact of loss of marine biodiversity and climate change. This unit explains the importance of biodiversity, how to conserve it etc.
1. The correct sequence of taxa is:
1) Class – order – family – species – genus.
2) Class – family – order – species – genus.
3) Phylum – order – class – species – genus
4) Phylum – class – order – genus – species.
2. Latest and 17th biosphere reserve in India is:
1) Silent valley
2) Seshachalam hills
3) Aravali Hills
4) Sarguja, Bastar
3. What is the correct sequence of Man, taxonomically starting from super family to sub family?
1) hominoidea, hominidae, homininae
2) homininae, hominoidea, hominidae
3) hominidae, homininae, hominoidea
4) hominoidea, homininae, hominidae
4. A fish, Nile Perch introduced into Lake Victoria in East Africa, led to the extinction of Cichlid fishes in the lake. This is an example for:
1) Fragmentation
2) Over exploitation
3) Co-extinction
4) Invasion of Alien species
1) How many hotspots of Biodiversity in the world have been identified till date by Norman Myers?
1) 17
2) 25
3) 34
4) 43
2. Red list contains data or information on:
1) all economically important plants
2) plants whose products are in international trade
3) threatened species
4) marine vertebrates only
3. Which of the following National Park is home to the famous musk deer or hanglu?
1) Keibul Lamjao National Park, Manipur
2) Bandhavgarh National park, Madhya Pradesh
3) Eaglenest Wildlife Sanctuary, Arunachal Pradesh
4) Dachigam National park, Jammu & Kashmir
4. Which is National Aquatic Animal of India?
1) Blue whale
2) Sea horse
3) Gangetic shark
4) River Dolphin
5. Which of the following is the most important cause of animals and plants being driven to extinction?
1) Habitat loss and fragmentation
2) Co-existence
3) Over – exploitation
4) Alien species invasion
6. The species confined to a particular region and not found elsewhere is termed as:
1) Endemic
2) Rare
3) Keystone
4) Alien
7. The organisation which publishes the Red list of species is:
1) ICFRE
2) IUCN
3) WWF
4) UNEP
8. An example of ex-situ conservation is:
1) National Park
2) Seed Bank
3) Wildlife Sanctuary
4) Sacred Groves
9. Which of the following has maximum genetic diversity in India?
1) Mango
2) Wheat
3) Groundnut
4) Rice
10. Which one of the following areas in India is a hotspot of Biodiversity?
1) Eastern Ghats
2) Gangetic plain
3) Sunderbans
4) Western Ghats
Very Short Answer Questions (VSAQ)
1. What is tautonymy? Give examples.
A: The practice of naming of animals in which the generic name and species name are the same. The name is known tautonym.
Eg. spotted deer – Axis axis Indian cobra – Naja naja
2. Differentiate between protostomia and deuterostomia.
A: i) Protostomia: blastopore develops into mouth are referred to as protostomians.
It includes the phyla like Platyhelminthes, Nematoda, Annelida, Arthropoda and Mollusca.
ii) Deuterostomia: anus is for-med from or near the blastopore. Mouth is formed later (secondarily). It includes the phyla like Echinodermata, Hemichordata and Chordata.
3. Define species richness.
A: It is the number of species per unit area. The number of species in an area indicates that more is the species richness. It increases with increasing explored area.
4. Write the full form IUCN. In which book threatened species are enlisted?
A: IUCN means International Union for the Conservation of Nature and Natural Resources.
All the threatened species are listed in the RED DATA BOOKS published by IUCN.
5. Mention any two products of medicinal importance obtained from nature.
A: two products of medicinal importance obtained from nature are
a) Digitalin from fox glove plant, Digitalis purpurea to treat cardiac problems.
b) Vinblastin from Vinca roseauses as anticancer drug.
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