306: Which of the following is / are unique characteristic / characteristics of equatorial forests?
1. Presence of tall, closely set trees with crowns forming a continuous canopy
2. Coexistence of a large number of species
3. Presence of numerous varieties of epiphytes
Select the correct answer using the codes given below.
(a) 1 only
(b) 1 and 3 only
(c) 2 and 3 only
(d) 1, 2 and 3
307: Consider the following statements about acetylene :
I. It is used in welding industry.
II. It is raw material for preparing plastics.
III. It is easily obtained by mixing silicon carbide and water.
Of these statements :
(a) I and II are correct
(b) I and III are correct
(c) II and III are correct
(d) I, II and III are correct
308: Which of the following statements regarding laterite soils of India are correct?
1. They are generally red is colour.
2. They are rich in nitrogen and potash.
3. They are well developed is Rajasthan and UP.
4. Tapioca and cashew nuts grow well on these soils
Select the correct answer using the codes given below.
(a) 1 and 4
(b) 2 and 3 only
(c) 1, 2 and 3
(d) 2, 3 and 4
309: Match List I with List II and select the correct answer using the codes given below the Lists :
List I --- List II
(Local bodies) --- (States as in 1999)
I. Zila Parishads at the sub-divisional level --- (A) Andhra Pradesh
II. Mandal Praja Parishad --- (B) Assam
III. Tribal Councils --- (C) Mizoram
IV. Absence of Village Panchayats --- (D) Meghalaya
Codes:
(a) I-B, II-A, III-D, IV-C
(b) I-A, II-B, III-D, IV-C
(c) I-C, II-B, III-A, IV-D
(d) I-B, II-A, III-C, IV-D
310: Genetically modified "golden rice" has been engineered to meet human nutritional requirements. Which one of the following statements best qualifies golden rice ?
(a) Its modified genes cause the fortification of its grains with vitamin D grains have been fortified with genes to provide three times higher grain yield per
(b) Its modified genes cause the synthesis of all the nine essential amino acids
(c) The grains have been fortified with genes to provide three times higher grain yield per acre than other high yielding varieties
(d) Its grains contain pro-vitamin A which upon ingestion is converted to vitamin A in the human body