61. Which of the following animals does not undergo metamorphosis?
(1) Moth (2) Tunicate (3) Earthworm (4) Starfish
(1) Moth (2) Tunicate (3) Earthworm (4) Starfish
Answer ( 3 )Earthworm
62. Which of the following organisms are known as chief
producers in the oceans?
(1) Cyanobacteria (2) Diatoms (3) Dinoflagellates (4) Euglenoids
(1) Cyanobacteria (2) Diatoms (3) Dinoflagellates (4) Euglenoids
Answer ( 2 )
63. Which one of the following population interactions is
widely used in medical science for the production of antibiotics?
(1) Parasitism (2) Mutualism (3) Commensalism (4) Amensalism
(1) Parasitism (2) Mutualism (3) Commensalism (4) Amensalism
Answer ( 4 )
64. All of the following are included in ‘ex-situ conservation’
except
(1) Botanical gardens
(2) Sacred groves
(3) Wildlife safari parks
(4) Seed banks
(1) Botanical gardens
(2) Sacred groves
(3) Wildlife safari parks
(4) Seed banks
Answer (2) Sacred groves
65. Match the items given in Column I with those in Column II and
select the correct option given below :
Column-I Column-II
a. Eutrophication i. UV-B radiation
b. Sanitary landfill ii. Deforestation
c. Snow blindness iii. Nutrient enrichment
d. Jhum cultivation iv. Waste disposal
a b c d
(1) iii iv i ii
(2) i iii iv ii
(3) ii i iii iv
(4) i ii iv iii
Column-I Column-II
a. Eutrophication i. UV-B radiation
b. Sanitary landfill ii. Deforestation
c. Snow blindness iii. Nutrient enrichment
d. Jhum cultivation iv. Waste disposal
a b c d
(1) iii iv i ii
(2) i iii iv ii
(3) ii i iii iv
(4) i ii iv iii
Answer ( 1 )
66. In a growing population of a country,
(1) reproductive and pre-reproductive individuals are equal in number.
(2) reproductive individuals are less than the post-reproductive individuals.
(3) pre-reproductive individuals are more than the reproductive individuals.
(4) pre-reproductive individuals are less than the reproductive individuals.
(1) reproductive and pre-reproductive individuals are equal in number.
(2) reproductive individuals are less than the post-reproductive individuals.
(3) pre-reproductive individuals are more than the reproductive individuals.
(4) pre-reproductive individuals are less than the reproductive individuals.
Answer ( 3 )
67. Which part of poppy plant is used to obtain the drug
“Smack”?
(1) Roots (2) Latex (3) Flowers (4) Leaves
(1) Roots (2) Latex (3) Flowers (4) Leaves
Answer ( 2 )
68. All of the following are part of an operon except
(1) an enhancer
(2) structural genes
(3) an operator
(4) a promoter
(1) an enhancer
(2) structural genes
(3) an operator
(4) a promoter
Answer (1)
69. A woman has an X-linked condition on one of her X chromosomes.
This chromosome can be inherited by
(1) Only grandchildren
(2) Only sons
(3) Only daughters
(4) Both sons and daughters
(1) Only grandchildren
(2) Only sons
(3) Only daughters
(4) Both sons and daughters
Answer (4) Both sons and daughters
70. According to Hugo de Vries, the mechanism of evolution is
(1) Phenotypic variations
(2) Saltation
(3) Multiple step mutations
(4) Minor mutations
(1) Phenotypic variations
(2) Saltation
(3) Multiple step mutations
(4) Minor mutations
Answer (2)Saltation