24. The correct statements are
A a, b
B b, c
C c, d
D a, d
25. Plants like Aegle marmelos, Ocimum sanctum and Ficus religiosa are a group of plants designated as
A Traditional food crops
B Sacred species of plants
C Medicinal plant species
D Lesser known food plants
26. –1°C to 13°C annual variations in the intensity and duration of temperature and 50 to 250 cm annual
variation in precipitation, account for the formation of major biome as:
A Tropical forest
B Coniferous forest
C Temperate forest
D Grassland
27. Sacred groves are especially useful in
A Generating environmental awareness
B Preventing soil erosion
C Year-round flow of water in rivers
D Conserving rare and threatened species
28. Some of the nutrient cycles are labelled as below: Sulphur cycle (a), Phosphorus cycle (b), Carbon
cycle (c) and Nitrogen cycle (d) Of these, the sedimentary cycle is represented by
A (a) only
B (b) only
C (c) only
D (a) and (b) only
29. Study the four statements (a–d) given below and select the two correct ones out of them
(a) A lion eating a deer and a sparrow feeding on grain are ecologically similar in being consumers
(b) Predator star fish Pisaster helps in maintaining species diversity of some invertebrates
(c) Predators ultimately lead to the extinction of prey species
(d) Production of chemicals such as nicotine, strychnine by the plants are metabolic disorders
The two correct statements are:
A (a) and (b)
B (b) and (c)
C (c) and (d)
D
30. Which is the right option for the tallest and the smallest Gymnosperm plant ?
(a) Eucalyptus and Zamiapygmea
(b) Wolffia globosa and Eucalyptus
(c) Sequoia sempervirens and Zamia pygmea
(d) Sequoia sempervirens and Wolffia globosa