(a) Mycoplasma (b) Spirogyra (c) Chlorella (d) Blue-green algae Ans. c (9)
(a) Naked sex organs (b) Sex organs covered with sterile covering (c) Chlorphylls a andb (d) Aerobic respiration Ans. a (8)
(a) Unicellular (b) Multicellular surrounded by a sterile jacket (c) Multicellular but not surrounded by any jacket (d) Unicellular with a sterile jacket Ans.a (10)
(a) Epiphytes (b) Parasites (c) Saprophytes (d) Autotrophs Ans. d (8)
(a) Oospore (b) Zoospore (c) Zygote (d) Zygospore Ans. d (14)
(a) Fresh water (b) Pond and lake (c) River (d) Ocean Ans. d (7)
(a) It is a freely falling body (b) It suffers no acceleration (c) It is moving with a constant speed (d) Its angular momentum remains constant Answer: b (7)
(a) 19.6×1010 N/m2 (b) 19.6×1015 N/m2 (c) 19.6×1018 N/m2 (d) 19.6×1020 N/m2 Answera-a (7)
(a) Schizomycetes (b) Rhodophyceae (c) Chlorophyceae (d) Phaeophyceae Ans. c (9)
(a) Hammering and annealing (b) Change in temperature (c) Impurity in substance (d) All of these Answer-d (5)
(a) It is a freely falling body (b) It suffers no acceleration (c) It is moving with a constant speed (d) Its angular momentum remains constant Answer: b (6)
(a) F=kl (b) F=k/l (c) F=k 2l …
(a) Triassic (b) Devonian (c) Permian (d) Ordovician Ans. d (11)
(a) gR2/R+h (b) gR (c) gR/R+h (d) √gR2/R+h Answer: d (7)
(a) L = 500 cm, d = 0.05 mm (b) L = 200 cm, d = 0.02 mm (c) L = 300 cm, d = 0.03 mm (d) L = 400 cm, d = 0.01 mm Answer-d (11)
(a) Wax (b) Butter (c) Chocolate (d) Carragenin Ans. d (6)
(a) Laminaria (b) Polysiphonia (c) Porphyra (d) Gelidium Ans. a (4)
(a) Cephaleuros (b) Synchytrium (c) Mucor (d) Fusarium Ans. a (10)
(a) Phycocyanin (b) Phycoerythrin (c) Fucoxanthin (d) Haematochrome Ans. c (6)
(a) The orbital velocity of a satellite increases with the radius of the orbit (b) Escape velocity of a particle from the surface of the earth depends on the speed with which it is fired (c) The time period of …
(a) Chlorophyceae (b) Phaeophyceae (c) Rhodophyceae (d) Xanthophyceae Ans. d (7)
(a) v2 = g(M/r) (b) v2 =GMm/r) (c) v =( GM/r ) …
(a) Algae (b) Fungi (c) Bryophyta (d) Pteridophyta Ans. a (9)
(a) Fungi (b) Algae (c) Pteridophytes (d) Angiosperms Ans. b (38)
(a) Chlorophyceae (b) Rhodophyceae (c) Myxophyceae (d) Cyanophages Ans. b (5)
(a) Cells are uninucleate in algae whereas they are multinucleate in fungi (b) Chlorophyll present in algae and absent in fungi (c) The presence of cellulose cell wall and chlorophyllous cells in algae while chitinous cell wall and non-chlorophyllous cells …
(a) Enzymes (b) Proteins (c) Fats (d) Starch Ans. d (6)
(a) Funaria (b) Chlamydomonas (c) Pinus (d) Selaginella Ans. b (8)
(a) Invar (b) Stainless steel (c) Tungsten (d) Platinum Answer-a (9)
(a) Xanthophyll (b) Carotenoids (c) g–phycoerythrin (d) g–phycocyanin Ans.c (6)
(a) Mosses (b) Liverworts (c) Fungi (d) Ferns Ans. c (9)
(a) Chlorella (b) Spirogyra (c) Oscillatoria (d) Ulothrix Ans. a (19)
(a) ( Kg )1/2 (b) ( Kg )-1/2 (c) ( Kg )2 (d) ( Kg )-2 Answer:a (4)
(a) Photosynthesis (b) Respiration (c) Photoreception (d) Movements Ans. c (6)
(a) Core of starch surrounded by sheath of protein (b) Core of protein surrounded by fatty sheath (c) Proteinaceous centre and starchy sheath (d) Core of nucleic acid surrounded by protein sheath Ans. c (10)
(a) They are good organisms to experiment with (b) They can be grown in large tank cultures (c) They may form important constituent of human food (diet) in future (d) They produce oxygen and organic acids Ans. c (7)
(a) 0.005 m (b) 0.01 m (c) 0.02 m (d) 0.002 m Answer-a (7)