Presence of plants arranged into well defined vertical layers depending on their height can be best seen in

(1) tropical savannah

(2) tropical rain forest

(3) grassland

(4) temperate forest

Which one of the following is related to Ex-situ conservation of threatened animals and plants?

1. Wildlife Safari parks

2. Biodiversity hotspots

3. Amazon rainforest

4. Himalayan region

The region of biosphere reserve, which is legally protected and where no human activity is allowed is known as

(a) core zone

(c) transition zone

(b) buffer zone

(d) restoration zone

How many hotspots of biodiversity in the world have been identified till date by Norman Myers?
(1) 17

(2) 34

(3) 25

(4) 43

Which of the following is correctly matched?

(1) Arenchyma               -  Opuntia

(2) Age pyramid             -  Biome

(3) Parthenium hysterophorus - Threat to biodiversity

(4) Stratification             - Population

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

Which of the following National Parks is home to the famous musk deer or hangul?
(1) Keibul Lamjao National Park, Manipur

(2) Bandhavgarh National Park, Madhya Pradesh

(3) Eaglenest Wildlife Sancturay, Arunachal Pradesh

(4) Dachigam National Park, Jammu and Kashmir

Which is the National Aquatic Animal of India?
1 River dolphin
2. Sea-horse
3. Blue whale
4. Gangetic shark

The species confined to a particular region and not found elsewhere is termed as

(1) keystone

(2) alien

(3) endemic

(4) rare

The following graph depicts changes in two populations (A and B) of herbivores in grassy field. A possible reason for these changes is that

1. both plant populations in this habitat decreased

2. population-B competed more successfully for food than population-A

3. population-A produced more offspring than population-B

4. population-A consumed the members of population-B