(a) Anatropous with four integuments (b) Anatropous with one integument (c) Amphitropous with three integuments (d) Orthotropous with two integuments Ans. b (9)
(a) Haploid (b) Diploid (c) Triploid (d) Tetraploid Ans. b (7)
(a) Furniture (b) Building purposes (c) Match boxes (d) All the above Ans. d (9)
(a) Before pollination (b) After pollination (c) After fertilization (d) None of the above Ans. a (45)
(a) Mesophytic (b) Xerophytic (c) Hydrophytic (d) Sporophytic Ans. b (9)
Which one of the following graphs represents correctly the variation of the gravitational field (F) with the distance (r) from the centre of a spherical shell of mass M and radius a Answer: d (25)
(a) Branches of unlimited growth (b) Branches of limited growth (c) Branches of limited and unlimited growth (d) Female cones Ans. b (8)
(a) Both bract and ovuliferous scales (b) Only bract scales (c) Only ovuliferous scales (d) None of the above Ans. a (10)
Suppose, the acceleration due to gravity at the earth’s surface is 10 m/s2 and at the surface of Mars it is 4.0 m/s2. A 60 kg passenger goes from the earth to the Mars in a spaceship moving with a …
(a) 10 celled (b) 6 celled (c) 4 celled (d) 2 celled Ans. c (4)
(a) Epispore (b) Endosperm (c) Perisperm (d) Pericarp Ans. b (14)
(a) Embryo sac (b) Bract scale (c) Ovule (d) Apophysis Ans. d (12)
(a) Moist soil (b) Moist tissue of sporophyte in the cone (c) Bogs and marshes (d) The rainy season only Ans. b (11)
(a) Above suspensor cells (b) Between suspensor and embryonal cells (c) Between primary and secondary suspensor cells (d) Between embryonal cells and apical cells Ans. a (3)
(a) Apical portion (b) Intercalary portion (c) Basal portion (d) Lateral portion Ans. c (5)
(a) Pinus plant (b) Zygote (c) Micro and megaspores (d) Male and female cones Ans. c (11)
(a) Presence of resin cells (b) Presence of resin ducts (c) Absence of resin ducts (d) Presence of vessels Ans. b (7)
(a) One needle (b) Two needles (c) Three needles (d) All correct Ans. d (8)
(a) No seeds (b) Flowers (c) No vascular tissues (d) Naked seeds in cones Ans. d (8)
(a) It is of much economic value (b) It is cosmopolitan in distribution (c) If grows in deserts and exhibits xerophytic character (d) If form deciduous trees in temperate region Ans. a (14)
(a) Haploid endosperm (b) Bicilliated sperms (c) Double fertilization (d) Presence of antheridia Ans. a (10)
A sphere of mass M and radius R2 has a concentric cavity of radius R1 as shown in figure. The force F exerted by the sphere on a particle of mass m located at a distance r from the centre …
(a) Leaves of Selaginella (b) Scaly leaves of Pinus (c) Needles of Pinus (d) Foliar leaves of Pinus Ans. b (7)
(a) Bract and ovuliferous scales (b) Embryo with two cotyledons (c) Resin canals in needles (d) Tracheids with bordered pits Ans. b (9)
(a) Competition among adjoining trees for sunlight (b) The effect of auxins on growth of stem tips (c) Adaptation for wind pollination (d) Efficiency of water transport from ground to leaves Ans. c (10)
(a) Cycas (b) Pinus (c) Abies (d) Cedrus Ans. b (6)
(a) Above suspensor cells (b) Between suspensor and embryonal cells (c) Between primary and secondary suspensor cells (d) Between embryonal and apical cells Ans. a (7)
(a) Roots (b) Endosperm (c) Dwarf shoot (d) Long shoot Ans. b (7)
(a) 1 prothallial cell (b) 2 prothallial cells (c) 4 prothallial cells (d) A mass of cells Ans. b (5)
(a) Two cotyledons (b) One cotyledon (c) Fleshy cotyledons (d) Many cotyledons Ans. d (8)
A geostationary satellite orbits around the earth in a circular orbit of radius 36000 km. Then, the time period of a satellite orbiting a few hundred kilometres above the earth’s surface (REarth = 6400 km ) will approximately be (a) 1/2 …
(a) Cycas (b) Pinus (c) Papaver species (d) None of the above Ans. b (6)
(a) Tracheids (b) Vessels (c) Equal number of tracheids and vessels (d) More vessels and less tracheids Ans. a (8)
(a) Megaspore, integument, root (b) Endosperm, megaspore, pollen grain (c) Pollen grain, leaf, root (d) Megaspore, endosperm, embryo Ans. b (7)
(a) 64.5 (b) 129 (c) 182.5 (d) 730 Answer: b (23)
(a) Long shoot (b) Needle leaves (c) Dwarf shoot (d) None of the above Ans.c (10)