61. The survival status of the state bird of Kerala, Bucerosbicornis, is indicated by “yellow” colour code in the Red Data Book, which means, the species is:
A) endangered
B) vulnerable
C) near threatened
D) least concern
62. The following are the respiratory structures of different Arthropods except:
A) Gills B) Trachea C) Ctenidia D) Book-lungs
63. Which among the following is a chordate, but not a vertebrate?
A) Ascidia B) Petromyzon C) Sea horse D) Star fish
64. Flightless birds, such as ostriches, belong to the order:
A) Passeriformes
B) Galliformes
C) Struthioniformes
D) Falconiformes
65. Match the following:
List I List II
a. Coconut 1. Saissetia nigra
b. Sugar cane 2. Leptocorisa varicornis
c. Rubber 3. Pyrilla perpusilla
d. Rice 4. Rhynchophorus ferrugineus
A) a-3, b-2, c-1, d-4
B) a-2, b-3, c-4, d-1
C) a-4, b-1, c-3, d-2
D) a-4, b-3, c-1, d-2
66. The scientific name of the ornamental fish, known as “Miss Kerala”:
A) Puntius denisonii
B) Poecilia reticulata
C) Xiphophorus maculates
D) Pterophyllum scalare
67. The enzyme, glycerone phosphate acyl transferase, that catalyze the first step in the biosynthesis of plasmalogens is present inside:
A) Peroxisome
B) Mitochondria
C) Cytoplasm
D) Golgicomplex
68. Process of evolution that suggests very short, rapid periods of change followed by long periods of stability:
A) Phyletic gradualism
B) Punctuated equilibrium
C) Genetic drift
D) Plesiomorphy
69. The Galápagos finches, which evolved into different species with distinct beak shapes to exploit different food sources, are an example of:
A) Adaptive radiation
B) Convergent evolution
C) Coevolution
D) Parallel evolution
70. Which of the following hominin species is believed to be the earliest to use stone tools?
A) Homo erectus
B) Homo habilis
C) Homo sapiens
D) Australopithecus afarensis
71. Biological magnification refers to the:
A) Increase in size of organisms over evolutionary time.
B) Enhancement of nutritive qualities of food as it goes up the food chain
C) Amplification of a pollutant concentration as it moves up the food chain.
D) Enlargement of cells during growth and development.
72. What is secondary productivity in an ecosystem?
A) The rate at which producers convert glucose to starch
B) The ratio of energy consumed by herbivores from that fixed by producers
C) The rate at which decomposers break down organic matter into nutrients.
D) The rate at which consumers convert organic matter into biomass.
73. Pyramid of numbers:
A) will be always upright
B) may be upright or inverted
C) will be always inverted
D) may be upright, inverted or partially upright
74. The type of ecological succession driven by biotic factors within an ecosystem is ------ succession.
A) primary B) autogenic C) allogenic D) autotrophic
75. Adopted as an extension of the UNFCCC in 1997, this protocol sets binding targets for industrialized countries to reduce their greenhouse gas emissions:
A) Kyoto Protocol
B) Montreal Protocol
C) Stockholm Convention
D) Rotterdam Convention
76. Learning that occurs without any obvious reinforcement or reward, and which is not
immediately expressed in behaviour:
A) Insight learning
B) Latent learning
C) Imprinting
D) Operant learning
77. Leptin is a regulator of appetite secreted from:
A) Enteroendocrine cells in ileum and colon
B) Parietal cells in gastric fundus
C) Adipocytes throughout the body
D) Arcuate nucleus of hypothalamus
78. Match the following:
List I List II
a. Pepsin 1.small intesine
b. Chymotrypsin 2. stomach
c. Maltase 3. pancreas
d. Ptyalin 4. salivary glands
A) a-3, b-2, c-1, d-4
B) a-2, b-3, c-4, d-1
C) a-3, b-1, c-2, d-4
D) a-2, b-3, c-1, d-4
79. Hamburger phenomenon:
A) Low level of oxyhaemoglobin enables blood to transport more carbon di oxide
B) High level of H+ ions promote oxygen release from oxyhaemoglobin
C) Transport of bicarbonate ion from red blood cell into blood plasma in exchange for a chloride ion
D) None of the above
80. Tachycardia:
A) Persistent resting adult heart rate above 100 beats per minute
B) Persistent resting adult heart rate below 60 beats per minute
C) Persistent resting adult heart rate between 60 and 100 beats per minute
D) None of the above
61-B | 62-C | 63-A | 64-C | 65-D | 66-A | 67-A | 68-B | 69-A | 70-B |
71-C | 72-D | 73-D | 74-B | 75-A | 76-B | 77-C | 78-D | 79-C | 80-A |