National Standard Examination in Biology (NSEB) Solved Paper 2016 Part-10

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Q: 60. When a plant cell undergoes expensive growth, the increase in volume is caused mostly

(A) Uptake of minerals

(B) Uptake of eater

(C) Synthesis of cellulose

(D) Synthesis of proteins

Answer: (B)

Q: 61. In temperate ponds many short-lived zooplanktonic species show morphological variations in successive generations. These are referred to as the ecotypes of the respective species. They are the reflections of

(A) Directional Mutations

(B) Adaptations to physical environment

(C) Population fluctuations

(D) Gene flow

Answer: (B)

Q: 62. Which of the following processes are involved in sympatric speciation?

(i) Reduced interactions between populations

(ii) Niche separation

(iii) Divergent evolution

(iv) Convergent evolution

(A)

(B)

(C)

(D)

Answer: (D)

Q: 63. When fresh extract of leaves of Bryophyllum dissolves calcium carbonate. What is the ideal time to collect the leaves to be most effective?

(A) Before daybreak

(B) Early hours of day

(C) At sunset

(D) Late evening

Answer: (A)

Q: 64. When the fruit of a specific plant species ware collected, they exhibited a variation in weight. The weight categories were 20, 25, 30, 35, and 40 grams. If it is a polygene inheritance, how many gene loci are involved?

(A) 2

(B) 3

(C) 4

(D) 5

Answer: (A)

Q: 65. The excessive being released in the atmosphere through the combustion of fuels is largely absorbed by seas and oceans thus restricting the greenhouse effect and global warming. Choose the appropriate combination of the biological processes that helps in minimizing global warming.

(i) Photosynthesis by phytoplankton species

(ii) Deposition of marl and compaction into limestone

(iii) Diagenesis of organic sediment into mineral oils

(iv) Formation of exoskeleton by marine organisms

(A)

(B)

(C)

(D)

Answer: (A)

Q: 66. An alga with cells lacking centrioles, flagella and having Floridian starch as reserved food has to be a

(A) Green alga

(B) Blue green alga

(C) Red alga

(D) Brown alga

Answer: (C)

Q: 67. Reclamation of which of the following habitats by dumping debris is sure to increase global warming?

(A) Seas

(B) Peat lands

(C) Temporary ponds

(D) Streams

Answer: (A)

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