61 The discrimination in the sound of varying intensities is done by which part of human
(A) Sacculus
(B) Utriculus
(C) Basilar membrane
(D) Ressiner’s membrane
62 Which of the following statements is not correct for a striated muscle when it contra
(A) No change in the length of I band.
(B) No change in the length of myosin band.
(C) A band retains its length.
(D) Sarcomere becomes shorter.
63 Androgens are secreted by –
(A) Sertoli cells
(B) Leydig cells
(D) Spermatogonial cells
(C) Tunica propria
64 Bacterial diseases in man are –
(A) Typhoid, plague, malaria
(B) Typhoid, plague, typhu
(C) Diphtheria, pneumonia, influenza
(D) Plague, malaria, typhoid
65 Select the correct set of homologous organs –
(A) Forelimb of man, wings of birds and flippers of whale
(B) Forelimb of man, wings of insects and wings of birds
(C) Forelimb of man, hind legs of horse, wings of birds
(D) Forelimb of man, tail of horse, wings of bat
66 Connecting link between phylum Annelida and Mollusca is –
(A) Peripatus
(B) Neopilina
(C) Chiton
(D) Nautilus
67 Munga silk is obtained from which insect ?
(A) Philosamia ricini
(B) Antheraea assama
(C) Antheraea paphia
(D) Bombyx mori
68 Who coined the term totipotency ?
(A) Morgan
(B) Schwann
(C) Darwin
(D) Haberlandt
69 Tap roots are commonly found in –
(A) Angiosperm
(B) Gymnosperm
(C) Monocots
(D) Dicots
70 Storage product of Rhodophyceae is –
(A) Starch
(B) Glycogen
(C) Floridean starch
(D) Cellulose
71 Palmella stage is present in –
(A) Chlamydomonas .
(B) Spirogyra
(C) Aspergillus
(D) Riccia
72 Edible part of apple and pear is –
(A) Thalamus
(B) Epicarp
(C) Mesocarp
(D) Endocarp
73 First “Earth Summit” for “Convention on Biological Diversity” was held at –
(A) Johannesburg (2002), S. Africa
(B) Rio de Janeiro (1992), Brazil
(C) Dehradun (1992), India
(D) New York (2000), USA
74 Alcohol is produced during the process of –
(A) Ascent of sap
(B) Photosynthesis
(C) Aerobic respiration
(D) Anaerobic respiration
75 Canada Balsam, a mounting agent used to make permanent slides is obtained from the species of –
(A) Abies
(B) Cedrus
(C) Pinus
(D) Juniperus
76 Stolon is a –
(A) Stem
(B) Root
(C) Underground stem
(D) Sub aerial modified stem
77 What is a Rosie ?
(A) A transgenic goat
(B) A transgenic cow
(C) A transgenic sheep .
(D) A transgenic flower
78 The edible part of litchi is –
(A) Mesocarp
(B) Thalamus
(C) Seed coat
(D) Aril
79 Minimum number of meiotic divisions required to obtain 100 pollen grains of wheat-
(A) 25
(B) 50
(C) 100
(D) 150
80 Red rust of tea is caused by –
(A) Green Algae
(B) Red Algae
(C) Fungi
(D) Brown Algae